Free Farm Calculators

Turnrow is a free agricultural calculator hub for US farmers and ranchers. Every tool is designed to give you an answer in under 10 seconds — on your phone, in the truck, or before a banker meeting. No login. No download.

Browse 18 free farm calculators by category below — cattle gestation, farm loans, grain bin volume, crop breakeven, pasture lease, fertilizer rates, and more.

Cattle Free Featured

Calving Date Calculator

Free calving date calculator for beef and dairy cattle. Enter a target calving season and work backward to your breeding window. Plan preg checks, close-up moves, and your full calving season.

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Cattle Free Featured

Cattle Gestation Chart & Calculator

Gestation period for cows by breed. Free cow gestation period calculator with Angus gestation length, calving windows, and a printable cattle gestation table PDF.

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Cattle Free Featured

Cattle Ration Calculator

Free cattle ration calculator for beef cows. Balance daily dry matter, crude protein, and TDN for every production stage. No login required.

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Finance Free Featured

Farm Loan Payment Calculator

Calculate farm loan payments with full amortization schedule. Works for FSA loans, land loans, equipment financing, and operating lines.

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Livestock Free Featured

Goat Gestation Calculator — Kidding Date by Breed

Free goat gestation calculator for standard and miniature breeds. Enter a breeding date, get your doe's expected kidding window, trimester milestones, and CDT vaccine timing.

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Grain Free Featured

Grain Bin Volume Calculator

Estimate bushel capacity for cylindrical grain bins. Enter diameter, height, and grain type for accurate storage planning.

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Sheep Free Featured

Sheep Gestation Calculator (147-Day Lambing Calculator)

Calculate sheep due dates instantly using a 147-day gestation calculator. View lambing dates, gestation charts, pregnancy timelines, and breed-specific information.

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Cattle Free Featured

Stocking Rate Calculator

Free stocking rate calculator for beef cattle. Calculate animal units, acres per cow, and sustainable grazing capacity for your pasture. No login required.

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Finance Free

Cash Rent Calculator

Free cash rent calculator for farmland. Enter expected yield, price, and production costs to see the maximum cash rent you can afford and still break even. No login required.

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Soil Free

CEC Calculator

Free CEC calculator. Estimate your soil's cation exchange capacity from Ca, Mg, K, Na, and H on your soil test. Understand base saturation for fertility decisions.

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Crops Free

Corn Yield Calculator

Free corn yield calculator. Estimate bushels per acre before harvest using ear counts, row spacing, and kernel rows. Based on the standard yield component method.

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Crops Free

Crop Breakeven Calculator

Free crop breakeven calculator. Enter production costs per acre to find the price and yield you need to break even on corn, soybeans, wheat, or sorghum. No login required.

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Inputs Free

Fertilizer Rate Calculator

Free fertilizer rate calculator. Convert your soil test nutrient recommendation (lbs N, P₂O₅, K₂O per acre) to application rates for common fertilizer products. No login required.

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Grain Free

Grain Moisture Calculator

Free grain moisture calculator. Convert wet bushels to dry bushel equivalents, calculate grain shrink, and see the value difference at sale moisture. Works for corn, soybeans, wheat, and sorghum.

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Rural Free

Hay Baling Cost Calculator

Free hay baling cost calculator. Estimate custom hay baling costs per bale, per ton, and per acre — for round bales, square bales, and custom hire. No login required.

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Land Free

Pasture Lease Calculator

Free pasture lease calculator. Compare per-head-per-month and per-acre lease structures for cattle and livestock grazing. Calculate breakeven rates for landlords and tenants. No login.

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Rural Free

Pond Stocking Calculator

Free pond stocking calculator for farm ponds. Enter your pond size in acres to get recommended fish stocking rates for bass, bluegill, catfish, and minnows. No login.

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Crops Free

Soybean Yield Calculator

Free soybean yield calculator. Estimate bushels per acre before harvest using pod counts per plant. Based on the standard yield component method used by university extension.

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Free farm calculators for every operation

Whether you run cow-calf in Oklahoma, row crops in Iowa, or a mixed operation across the Plains, Turnrow's free farm calculators cover the decisions that used to live in spreadsheets and pocket notebooks. Run a cattle gestation date before sorting pairs. Check farm loan payments before signing with FSA or Farm Credit. Size grain bin capacity before harvest fills every bin you have got.

Agricultural calculators on Turnrow span cattle, sheep, finance, grain, crops, inputs, soil, land, and rural tools — from stocking rate and cash rent to fertilizer rates and pasture lease evaluation. Every tool is free, works on any device, and requires no account.

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