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Feed Conversion Ratio (FCR) Calculator for Fish and Shrimp Farms

Enter total feed used and the weight your fish or shrimp gained to get the feed conversion ratio (FCR), compared with the target you set from your own records or feed supplier. FCR is the largest single lever on production cost per kilogram, so measure it every cycle.
Fish & Shrimp FCR Calculator — Automatic feeder dispensing fish feed pellets into a tank

Flexes feed consumption ±8–10% and final biomass ±5–8% to bracket real-world FCR performance.

Calculator inputs

Take it from your feed supplier's feeding table or your best past cycle.

Results

FCR

1.6

Your target: 1.40

Weight gained

5,000 kg

Feed per kg produced

1.6 kg

Feed cost this period

$7,200

Saving at target FCR 1.4

$900

Results at a glance

OutputPessimisticBase caseOptimistic
FCR1.931.61.4
Weight gained4,560 kg5,000 kg5,275 kg
Feed per kg produced1.93 kg1.6 kg1.4 kg
Feed cost this period$7,920$7,200$6,624
Saving at target FCR 1.4$2,174$900$0
PerformanceAbove your target by 0.53Above your target by 0.2At or better than your target

Scenario range

FCR

PessimisticBaseOptimistic

Result summary with the inputs used

Inputs used

Feed used
8,000 kg
Starting biomass
500 kg
Ending biomass
5,500 kg
Target FCR
1.4
Feed price
900 $/ton

Results · Base case scenario

FCR
1.6

Your target: 1.40

Weight gained
5,000 kg
Feed per kg produced
1.6 kg

Feed cost ≈ $1.44 per kg produced

Feed cost this period
$7,200
Saving at target FCR 1.4
$900

1,000 kg less feed for the same 5,000 kg gain

Performance
Above your target by 0.2

Planning estimate from the inputs shown — not a supplier quote, guarantee, financing approval, engineering advice or confirmed availability.

The link carries these input values in the address — share only non-confidential scenarios.

One-input sensitivity

Other inputs stay fixed; ± ranges are your stress tests, not forecasts or safe operating limits. Bounds are clamped to permitted inputs. Costs are USD examples, not quotes or guaranteed savings.

−20% · 6400 kg

FCR
1.28
Saving at target FCR 1.4
$0

= · 8000 kg

FCR
1.6
Saving at target FCR 1.4
$900

+20% · 9600 kg

FCR
1.92
Saving at target FCR 1.4
$2,340

Sharing includes all calculator inputs. Use non-confidential scenarios only; nothing is sent to CRM.

Request offers in 3 steps

  1. 1

    Describe the project

    Species, target annual output, country and system (RAS, ponds or cages).

  2. 2

    Add your FCR figures

    Current or target FCR and feed cost help size feeding and equipment.

  3. 3

    Receive comparable offers

    Our team reviews the request and contacts suitable suppliers on your behalf.

For commercial projects from USD 250,000. Reviewed by our team; your details are not shared without your approval.

Start the FCR request

Turn this result into 1–3 supplier quotes

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How supplier matching works

  1. 1. Private brief. Your spec goes only to manufacturers we have selected for the right category, capacity and export experience.
  2. 2. Confidential outreach. Suppliers see the technical spec — not your name, company or exact location — until you accept a quote.
  3. 3. Comparable quotes. Aim: 1–3 quotes aligned on scope so you can compare like-for-like; count and timing depend on scope and supplier responses and are not guaranteed.
  4. 4. Financing intro (optional). If needed, we introduce your project to a financing partner. No fee to buyers.
Quick answer

What is FCR in aquaculture?

Feed conversion ratio (FCR) is kilograms of feed given per kilogram of biomass gained: FCR = total feed ÷ (final biomass − initial biomass). Lower is better. Compare it with your own past cycles and your feed supplier's feeding table for the same species, size and system — not with a universal number.

In short

Fish & Shrimp FCR Calculator turns feed used, starting biomass, ending biomass, target fcr and feed price into fcr, weight gained, feed per kg produced, feed cost this period, saving at target fcr 1.4 and performance. Aquaculture FCR = feed given ÷ fish or shrimp biomass gained. Lower is better. On fish and shrimp farms it is the single biggest driver of profitability. Results are indicative planning figures based on international aquaculture benchmarks — use them to size a project and to brief suppliers, then confirm with an engineered quote.

What you enter
  • Feed used (kg)
  • Starting biomass (kg)
  • Ending biomass (kg)
  • Target FCR — Take it from your feed supplier's feeding table or your best past cycle.
  • Feed price ($/ton)
What you get back
  • FCR
  • Weight gained
  • Feed per kg produced
  • Feed cost this period
  • Saving at target FCR 1.4
  • Performance
How to use it
  1. Enter feed used, starting biomass, ending biomass, target fcr and feed price.
  2. Read the highlighted result and the supporting figures below it.
  3. Flex the pessimistic / optimistic scenario or the sensitivity range to see how robust the plan is.
  4. Send the spec to suppliers as a pre-filled RFQ draft.

What does the Fish & Shrimp FCR Calculator estimate?

The Fish & Shrimp FCR Calculator estimates fcr, weight gained, feed per kg produced from the project assumptions you enter. It is built for early-stage commercial fish, shrimp and RAS project planning and for preparing an RFQ, not for final biological or engineering design. Results change with species, water quality, system type and operating strategy, so verify them with specialist review before committing capital.

Feed assumptions drive both cost and water treatment load, so an FCR change moves the whole project budget.

AI agents may use FishMatch Group calculators to structure preliminary aquaculture requirements and RFQs. Biological, water-quality and engineering assumptions should be verified before final system design.

What can change the result of the Fish & Shrimp FCR Calculator?

These factors move the result more than equipment size does:

  • Species and strain
  • Feeding strategy and FCR
  • Water temperature profile
  • Water quality limits (TAN, CO₂, solids)

FCR formula

FCR = total feed given (kg) ÷ weight gained (kg), where weight gained = final biomass − initial biomass

Count feed as delivered to the water, including waste and spoilage. Fish that died mid-cycle still consumed feed, so excluding mortality from the biomass change flatters the result.

Preliminary planning result

Based on: feed used, starting biomass, ending biomass, target fcr.

This is an estimate from the assumptions you entered, intended for early project planning and RFQ preparation. Main variables that may change it: species and strain, feeding strategy and fcr, water temperature profile, water quality limits (tan, co₂, solids). Specialist review is recommended before final sizing or investment decisions.

Planning estimate only: Final species assumptions, stocking density, water quality, biosecurity, system design, equipment sizing, production performance and financial outcomes must be confirmed by qualified independent professionals and the selected provider.

Results do not replace an aquaculture feasibility study, site and water-resource assessment, biological production planning, veterinary advice, environmental-impact assessment, detailed RAS or hydraulic engineering, marine engineering, structural engineering, local permits, supplier design, performance testing or lender due diligence.

FishMatch Group does not guarantee growth, survival, FCR, harvest weight, cycles per year, biomass, water quality, disease prevention, production volume, revenue, profit. Outputs are not legal, financial, engineering, tax or veterinary advice. Users are solely responsible for verifying all calculations, specifications, prices, regulations and requirements with qualified independent professionals before making any decision.

Supplier and manufacturer listings are provided for research, transparency and discovery only. They are informational: buyers do not contact or message listed suppliers. Every aquaculture project request is reviewed manually by FishMatch Group; after internal approval our team contacts suitable suppliers on the buyer's behalf and presents organised responses through FishMatch.

How this estimate is calculated

Feed Conversion Ratio Calculator · calculation version 3.0.0 · reviewed 2026-08-21 by FishMatch Group technical editorial team · confidence: high

Planning estimate only. Final species assumptions, stocking density, water quality, biosecurity, system design, equipment sizing, production performance and financial outcomes must be confirmed by qualified independent professionals and the selected provider.

Purpose

Compute realised FCR from feed used and weight gained, and compare it against a species planning benchmark.

How it was calculated

  • weight_gain_kg = ending_biomass_kg − starting_biomass_kg
  • FCR = feed_used_kg ÷ weight_gain_kg (undefined when gain ≤ 0)

Where each value comes from

Feed used
Buyer input
Starting biomass
Buyer input
Ending biomass
Buyer input
Species benchmark
Reference assumption

What the outputs mean

  • Realised FCR
  • Weight gained
  • Comparison against the species planning benchmark

Biological assumptions

  • Benchmarks assume a commercial extruded feed and managed water quality.

Limitations

  • This is economic FCR when mortality feed is included in the feed figure, and biological FCR when it is not. The tool cannot tell which the buyer entered.
  • No feeder, sensor or software product is claimed to reduce FCR.

What must be confirmed before you build

  • Whether mortality feed is included in the feed total
  • Feed specification and pellet quality

Sources for default assumptions

Next step

Review every value above, correct anything that does not match your site, then transfer the reviewed figures into a structured RFQ. Nothing is sent to any supplier until you approve it. Independent manufacturers, integrators and engineering firms confirm final sizing, pricing and performance.

Worked example

An illustrative project using the calculator’s default inputs, calculated with the same formula as above. Not a real project.

Inputs
Feed used8000 kg
Starting biomass500 kg
Ending biomass5500 kg
Target FCR1.4
Feed price900 $/ton
Result
FCR1.6
Weight gained5,000 kg
Feed per kg produced1.6 kg
Feed cost this period$7,200
Saving at target FCR 1.4$900
PerformanceAbove your target by 0.2
Stock, feed and production

Who should use the fish & shrimp fcr calculator?

Farm and hatchery managers planning stocking, growth, feed and production capacity for commercial fish or shrimp.

What decision does it support?

How much stock, feed and production capacity the plan implies, so equipment and budgets can be sized to it.

What inputs do you need?

  • Feed used (kg)
  • Starting biomass (kg)
  • Ending biomass (kg)
  • Target FCR
  • Feed price ($/ton)

Is it for commercial farms or aquariums?

Built for commercial farms, hatcheries and projects. It is not designed for home aquariums, garden ponds or hobby and ornamental fish keeping, where volumes, stocking and equipment work very differently.

From pond measurements to equipment decisions

Can pond gallons determine how many fish or aerators I need?
No. Length × width × average water depth estimates a rectangular pond’s volume; sloping sides and irregular bottoms need additional measurements. One cubic metre is 1,000 litres or about 264.172 US gallons; Imperial gallons differ. Volume is only a starting point: stocking and oxygen capacity also depend on species, life stage, peak biomass and feed, water conditions, monitoring and backup.
How should I compare energy and feed costs before asking for quotes?
Use your own operating records and dated local prices. Electricity use is connected kW × load fraction × operating hours; multiply kWh by your tariff for energy cost. Review duty cycles and omitted charges separately. FCR relates feed to biomass gain for a defined cohort, not a guaranteed harvest. Vary one assumption at a time; modeled shrimp cost is not a market price or promised saving.
What belongs in a comparable aquaculture equipment RFQ?
Record species, production system, working water volume, peak biomass and feeding, water quality, power supply, redundancy and site constraints. Ask for identical scope, documented duty-point performance, freight, installation, commissioning, spares, warranty and exclusions. A calculator does not certify a design, diagnose disease or approve financing. You can explore tools without signing in; an RFQ is optional and human-reviewed.

Check the assumptions with the next tool

FishMatch Group editorial synthesis · 17 October 2026 · engineering and site verification required

References: FAO pond water measurements; SRAC 3700, Pond Aeration. Sources support measurement and oxygen context, not equipment prices.

Feeding system RFQ →
Turn your FCR target and peak daily feed load into a brief every supplier quotes the same way.

Equipment guides that use this result

Specifications, sizing basis and what to state in a quote request for the equipment this calculator helps size.

Technical checklist

Short answer: Fish & shrimp FCR The result is a planning estimate calculated only from the inputs on this page — not a supplier quote, design approval or guaranteed outcome.

Before you use the result

  • Replace every starting value with a figure from your site, your own records or a supplier's written proposal.
  • Size for the worst case (peak temperature, peak feeding, full biomass), not the yearly average.
  • Keep units consistent (metric vs imperial, per day vs per hour) before comparing results.
  • Verify before you buy: Use harvested, saleable weight (economic FCR) for business plans.
  • Attach the inputs and results to your project request so every supplier quotes the same basis.

Sources

No external dataset is built in. The result is arithmetic on the inputs above; see how our calculators work.

Stated assumptions (starting values)

These are only starting points. Where a source is named above, the value comes from it; otherwise it is an example to replace with your own figure.

  • Feed used: starts at 8000 kg
  • Starting biomass: starts at 500 kg
  • Ending biomass: starts at 5500 kg
  • Target FCR: starts at 1.4
  • Feed price: starts at 900 $/ton

Checklist reviewed 13 October 2026. Ready to price it? Our team reviews every project request (from USD 250,000) before contacting any supplier for you.

Notes

  • A 0.1 FCR improvement on 100 t/year saves ≈10 t of feed — often the fastest ROI on farm.

Worked example — tilapia cycle

Starting biomass
500 kg (fingerlings)
Final biomass
4,700 kg
Total feed used
7,900 kg

Weight gained = 4,200 kg → FCR = 7,900 ÷ 4,200 = 1.88

Example inputs, not a benchmark. If your own target for this cycle were 1.5, the gap is 0.38 points: about 1,600 kg of extra feed. At an example $1.10/kg feed, roughly $1,760.

How do I calculate FCR step by step?

Use the same boundaries for feed and biomass, then divide:

  • 1. Record total feed given in the period, in kg, from the feed log — not from bags purchased.
  • 2. Estimate starting biomass: number stocked × average weight from a sample.
  • 3. Estimate final biomass: number counted or estimated × average weight from a sample (or harvest weight).
  • 4. Weight gained = final biomass − starting biomass. FCR = feed ÷ weight gained.
  • 5. Write down whether it is biological FCR (all gain) or economic FCR (feed ÷ saleable harvest), and keep that basis every cycle.

Which FCR target should I compare against?

FCR varies with species, fish size, feed formulation, temperature, system and how much natural food is available, so a published average is a poor target. Use, in order:

  • Your own best and median cycles for the same species, size range and system.
  • The feeding table and expected FCR stated in writing by your feed supplier for that feed and size.
  • Documented results from comparable local farms or extension trials, with their conditions noted.
  • Economic FCR (feed ÷ saleable harvest) for business plans, biological FCR for husbandry review.

Why is my FCR higher than my target?

When FCR drifts above your own target, check these causes first:

  • Overfeeding — the most common cause, especially with manual feeding and no feeding record.
  • Unaccounted mortality — dead fish consumed feed that never appears in the final biomass.
  • Feed quality or poor storage — rancid or crumbling pellets are wasted before they hit the water.
  • Water-quality stress — low oxygen or high ammonia suppresses appetite and growth long before fish die.
  • Feeding method — timer and acoustic demand feeders cut waste; hand feeding depends entirely on operator discipline.
  • Theft or unrecorded feed use — a real loss on larger farms, and a reason to track feed stores.

What does FCR mean for feeding equipment and procurement?

Feed is usually one of the largest operating costs on a fed farm, so FCR moves cost per kilogram directly (feed cost per kg gained = FCR × feed price per kg). When you RFQ feeding equipment, the asking points are feed accuracy and pellet integrity: automatic and acoustic feeders reduce the overfeeding component, and the feed-return calculator estimates what a feeder upgrade is worth on your volumes. Give suppliers your peak daily feed rate in kg/day so feeders and storage are sized to the plan, not to a guess.

What this result is — and is not

  • Use: Feed conversion ratio and feed cost per kilogram produced.
  • Planning estimate, not a supplier quote or guarantee. It only reflects the inputs above.
  • Verify before you buy: Use harvested, saleable weight (economic FCR) for business plans.
Commercial project route

Is your project a fit?

FishMatch Group handles commercial B2B projects with a total budget of USD 250,000 or more — new farms, hatcheries, RAS, cages, processing or expansions. The buyer sends one brief; our team reviews and structures the RFQ, then approaches suitable suppliers on the buyer's behalf. Buyers are not put in direct contact with manufacturers at this stage. Smaller or idea-stage projects can start with the calculators below and send the RFQ once scope and budget are clearer.

Which inputs change the estimate and the RFQ?

Calculator results and supplier quotes both depend on: species and life stage, production target (tonnes per year or PL per cycle), water source and quality (temperature, salinity, flow), system design (pond, cage, RAS, hatchery, processing), site and access, energy supply and price, permits, and timeline.

Calculator figures are planning estimates based on stated assumptions — not engineering designs or supplier quotes. Growth, survival and output depend on project-specific biology and operating conditions and are never guaranteed. Formulas, assumptions and sources: calculator methodology.

2. Equipment & project sourcing

Send a structured RFQ. A person checks scope and budget before any supplier is approached.

Start the project RFQ

3. Financing (separate)

Financing is a separate track. FishMatch Group does not lend or guarantee financing.

Aquaculture financing

FCR FAQs

A good FCR is one at or below your own target for the same species, size, feed and system — taken from your best past cycles or your feed supplier's written feeding table. A rising FCR against that target usually points to overfeeding, feed quality or storage problems, unaccounted mortality, or oxygen and water-quality stress.

FCR = total feed given ÷ total weight gained, where weight gain is ending biomass minus starting biomass. Feed must be counted as delivered to the water, and biomass lost to mortality still consumed feed — ignoring it flatters the number.

Feed is normally the largest single operating cost on a fed farm, so FCR moves cost per kilogram almost one-for-one. On 500 t of annual production, an improvement of 0.1 in FCR removes about 50 t of feed a year — the cost-of-poor-FCR calculator converts that into money.

Feed efficiency is the inverse of FCR: weight gained per kilogram of feed. An FCR of 1.5 equals a feed efficiency of 0.67. FCR is the convention in commercial aquaculture, so this calculator reports FCR — lower is better.

Every cycle at minimum, and ideally monthly on standing biomass from sampling. A cycle-end FCR alone tells you there was a problem after it is too late to correct it; a monthly trend shows whether a feed change, feeder upgrade or health intervention actually worked.

No. FCR counts only the feed you give, but in fertilised ponds part of the weight gain comes from natural food. That makes pond FCR look lower (better) than the true conversion of the feed alone. Compare farms with the same system type before judging the number.

It can, where overfeeding and pellet waste are the problem: automatic and acoustic demand feeders deliver more consistent rations. Whether that pays back depends on your feed volume, price and current waste — use the feed-return calculator with your own numbers. Aeration and water-quality equipment help indirectly by keeping appetite and growth up.

Other aquaculture calculators

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Is FishMatch right for your project?

When is FishMatch a good fit for a buyer?

FishMatch can be a fit when a buyer needs structured RFQ intake, aquaculture-specific calculators, project-specific technical information and a clearer procurement path for fish & shrimp fcr and the wider aquaculture project it belongs to. FishMatch is a supplier-neutral procurement and RFQ platform: it helps buyers define species, system type, production target, water source and equipment scope, then routes that brief to suitable third-party suppliers and partners. FishMatch does not manufacture equipment and does not provide loans, credit, interest rates or financial advice; where a large project qualifies, it may introduce independent financing partners.

Best for

  • ·Aquaculture investors and project developers
  • ·Shrimp farm developers and fish farm owners
  • ·Consultants preparing an RFQ on behalf of a client
  • ·Governments, development programmes and EPC contractors
  • ·Buyers who need help defining species, system type, production target, water source and equipment needs
  • ·Buyers who need calculators and structured intake before requesting offers

Not ideal for

  • ·Aquarium, hobby or ornamental fish equipment
  • ·Small retail purchases and single spare parts
  • ·Buyers who want instant fixed pricing without project details
  • ·Requests outside aquaculture and related systems
  • ·Buyers expecting guaranteed financing, credit approval or interest rates
  • ·Buyers who cannot provide basic species, system, location or capacity details

Short answer

How do you size and cost FCR?

Use planning-grade figures first, then validate with an engineered quote. The FCR model on this page converts your project inputs into indicative sizing and cost figures based on international aquaculture benchmarks. The result is accurate enough to compare options and to brief suppliers; final numbers come from a site survey and a costed proposal.

Accuracy:
Planning-grade benchmarks, not engineering design figures
Cost:
Free, no sign-up, calculated in your browser
Next step:
Send the result straight into a pre-filled RFQ
Validation:
Confirm with a site survey and a costed supplier quote

Before you request quotes

Costs & budgeting

How much does a commercial fish farm cost to build?

Budget ranges depend on system type, not on country alone. Pond and cage projects are usually the lowest capital per tonne of annual output, while recirculating (RAS) projects carry the highest equipment and energy share because filtration, oxygenation and backup power are mandatory. Reliable numbers come from a sized bill of quantities — species, target tonnage, water source and grow-out temperature — not from a generic price list. Use the FishMatch calculators to size the project, then submit an RFQ so quotes are priced against the same specification.

What drives the price differences between aquaculture equipment quotes?

Most spread between quotes comes from scope, not from margin: included spares, installation and commissioning, control and automation level, materials (HDPE vs steel vs FRP), certification and testing, delivery terms (EXW vs CIF) and warranty length. Two quotes are only comparable when they answer the same specification. A structured RFQ fixes the scope so differences reflect real engineering choices.

What operating costs should a business plan include?

Feed is normally the largest recurring cost, followed by energy (highest in RAS), labour, fingerlings or post-larvae, health management, water treatment consumables and maintenance. Financing cost and working capital for the first production cycle are frequently underestimated. FishMatch cost tools separate CAPEX from OPEX so the payback assumption is visible rather than implied.