9 Free Aquaculture Calculators Every Fish & Shrimp Farmer Should Bookmark
Before you talk to a supplier, run the numbers. FishMatch Group's calculators turn a farm idea into an engineering brief in minutes — pond volume, stocking density, oxygen demand, FCR, growth, water exchange, harvest profit, project ROI and RAS cost. No sign-up, no downloads, no email required.
Why farmers use our calculators
Suppliers quote what you ask for. If you ask for the wrong tank volume, wrong oxygen budget or wrong feed schedule, you pay for it for the next 15 years. Running our free tools first means every RFQ you send is spec-perfect — and every quote you receive is comparable, defensible and financeable.
Pond & tank sizing (pond volume, stocking density)
Start with the Pond Volume Calculator to convert length × width × depth into m³, litres and acres. Then feed that volume into the Stocking Density Calculator to see how many fingerlings or post-larvae the water can safely carry for tilapia, salmon, seabass, trout, catfish, shrimp or carp — with species-specific density benchmarks baked in.
Water quality: oxygen demand & water exchange
The Oxygen Demand Calculator uses live biomass and species-specific respiration rates (mg O₂/kg/hour) to size aerators, blowers or LRP oxygen cones. The Water Exchange Calculator turns pond volume and daily exchange rate into pump flow (m³/h and L/s) so you specify the right pump, pipework and power draw the first time.
Biology & performance: biomass, FCR, growth
The Biomass Calculator projects standing biomass from stocked number × average weight × survival. The FCR Calculator turns feed used and biomass produced into a Feed Conversion Ratio — the single number that decides your feed cost per kg of harvest. The Growth Calculator estimates days-to-market from initial weight, target weight and specific growth rate (SGR).
Money: harvest profit, project ROI, RAS cost
The Harvest Profit Calculator combines biomass × price − (feed + fingerlings + energy + labour) to give you gross margin per cycle. The Project ROI Calculator and RAS Cost Calculator go deeper — CAPEX, OPEX, payback and IRR for RAS, pond, cage and biofloc builds. Numbers a bank or an investor will actually accept.
From calculator to RFQ in one click
Every calculator ends with two CTAs: request supplier matches or request project financing. Your inputs travel with you — so the concierge team can prepare an RFQ, compare offers from project-matched manufacturers and, if you qualify, arrange leasing, project finance or export credit for the equipment on your list. Free for buyers. Suppliers pay us on delivery.
Used by aquaculture teams across 40+ countries
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