Free calculators for growers and makers
Costing and pricing tools for farm-grown and small-batch products. They run entirely in your browser — nothing you type is sent anywhere, and none of them ask for an email.
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Mushroom Substrate & Yield Calculator
Plan a mushroom farm from raw materials to harvest: substrate formulation and water for any block size, sterilizer throughput, incubation and fruiting space, labor hours, and yield range by biological efficiency.
Start here when planning or sizing a grow.
Open the substrate calculator -
Drip Irrigation Calculator
Run time, precipitation rate, system flow in GPM, how many zones your supply forces, and weekly water use and cost for bedded drip tape.
For scheduling and sizing irrigation.
Open the drip irrigation calculator -
Greenhouse Heating Calculator
Peak heat loss and heater sizing for a greenhouse or high tunnel, endwalls and air leakage included, with propane, natural gas and electric running costs compared.
For sizing heat before you buy a structure.
Open the greenhouse heating calculator -
Grow Light & DLI Calculator
Find the PPFD and daily light integral a crop needs, how many fixtures that takes, the running cost, and the heat load your cooling has to remove.
For indoor and controlled-environment growing.
Open the grow light calculator -
Farm Labor Cost Calculator
The fully loaded cost of an employee hour once payroll taxes, workers compensation and non-productive time are counted — and what that makes the labor in a unit you sell.
Feeds the labor line of your unit cost.
Open the farm labor calculator -
Craft Farm COGS Calculator
Work out true cost per saleable unit across materials, direct labor, and allocated production overhead — then price to a target gross margin.
Use this to turn production cost into a finished-goods unit cost.
Open the COGS calculator -
Wholesale Price Calculator
Turn a unit cost into wholesale, case, and shelf pricing — with volume tiers and a check that the retail price a buyer needs is realistic.
Use this once you know your cost per unit.
Open the wholesale calculator
The two are designed to be used in order: the COGS calculator produces the cost per unit that the wholesale calculator needs as its starting point.