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

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
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
| Output | Pessimistic | Base case | Optimistic |
|---|---|---|---|
| FCR | 1.93 | 1.6 | 1.4 |
| Weight gained | 4,560 kg | 5,000 kg | 5,275 kg |
| Feed per kg produced | 1.93 kg | 1.6 kg | 1.4 kg |
| Feed cost this period | $7,920 | $7,200 | $6,624 |
| Saving at target FCR 1.4 | $2,174 | $900 | $0 |
| Performance | Above your target by 0.53 | Above your target by 0.2 | At or better than your target |
Scenario range
FCR
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
- 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
- Performance
- Above your target by 0.2
Your target: 1.40
Feed cost ≈ $1.44 per kg produced
1,000 kg less feed for the same 5,000 kg gain
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
Describe the project
Species, target annual output, country and system (RAS, ponds or cages).
- 2
Add your FCR figures
Current or target FCR and feed cost help size feeding and equipment.
- 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 requestTurn this result into 1–3 supplier quotes
FishMatch Group reaches out on your behalf — your name, project and location stay confidential until you accept a quote. No sign-up, no listing fees, buyers never pay.
How supplier matching works
- 1. Private brief. Your spec goes only to manufacturers we have selected for the right category, capacity and export experience.
- 2. Confidential outreach. Suppliers see the technical spec — not your name, company or exact location — until you accept a quote.
- 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. Financing intro (optional). If needed, we introduce your project to a financing partner. No fee to buyers.
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.
- 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)
- FCR
- Weight gained
- Feed per kg produced
- Feed cost this period
- Saving at target FCR 1.4
- Performance
- Enter feed used, starting biomass, ending biomass, target fcr and feed price.
- Read the highlighted result and the supporting figures below it.
- Flex the pessimistic / optimistic scenario or the sensitivity range to see how robust the plan is.
- 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.
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.
| Feed used | 8000 kg |
|---|---|
| Starting biomass | 500 kg |
| Ending biomass | 5500 kg |
| Target FCR | 1.4 |
| Feed price | 900 $/ton |
| FCR | 1.6 |
|---|---|
| Weight gained | 5,000 kg |
| Feed per kg produced | 1.6 kg |
| Feed cost this period | $7,200 |
| Saving at target FCR 1.4 | $900 |
| Performance | Above your target by 0.2 |
Who should use the fish & shrimp fcr calculator?
Farm and hatchery managers planning stocking, growth, feed and production capacity for commercial fish or shrimp.
What decision does it support?
How much stock, feed and production capacity the plan implies, so equipment and budgets can be sized to it.
What inputs do you need?
- Feed used (kg)
- Starting biomass (kg)
- Ending biomass (kg)
- Target FCR
- Feed price ($/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.
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.
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.
1. Size it
2. Equipment & project sourcing
Send a structured RFQ. A person checks scope and budget before any supplier is approached.
Start the project RFQ3. Financing (separate)
Financing is a separate track. FishMatch Group does not lend or guarantee financing.
Aquaculture financingFCR FAQs
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