Crop Yield Calculator
A crop yield calculator turns a harvest into a per-acre yield, the standard way farmers and analysts compare productivity across fields, seasons and regions. Yield is simply total production divided by the area harvested. This tool takes the total production, in bushels, tons, pounds or any unit you choose, and the field area in acres, then divides to return the yield per acre. Both inputs are editable so you can analyze a single field, a whole farm, or a research plot in whatever units your crop is measured. Per-acre yield is the figure that drives revenue projections, rent and crop-share agreements, input decisions, and year-to-year comparisons, because it removes the effect of field size. The US Geological Survey publishes the land area and mapping data behind accurate acreage measurement, and agricultural agencies publish yield benchmarks by crop and county for comparison. Keeping production and area in matching units gives a yield in those units per acre, for example bushels per acre or tons per acre. Every figure is computed deterministically from the production divided by area formula shown below, with a worked example that reconciles exactly to the calculator so you can follow each step yourself.
Yield divides total production by the area harvested: yield = production / area. Harvesting 18,000 bushels from 100 acres gives a yield of 180.00 bushels per acre.
Crop yield formula
Yield = P / A
P = total production (bushels, tons or other unit)
A = area harvested (acres)
The result is expressed in the production unit per acre. Use the same unit on both sides so the yield is directly comparable to published benchmarks.
Worked example
A field produces 18,000 bushels of corn from 100 harvested acres.
- Total production = 18,000 bushels
- Field area = 100 acres
- Yield = 18,000 / 100 = 180.00 bushels per acre
The field yields 180.00 bushels per acre. These are the calculator's default inputs, so the result above matches the widget exactly.
Crop Yield Calculator: frequently asked questions
How is crop yield calculated?
Crop yield is total production divided by the area harvested. If a field produces 18,000 bushels from 100 acres, the yield is 180 bushels per acre. Keeping production and area in consistent units gives a yield directly comparable to regional benchmarks.
What units are yields reported in?
It varies by crop. Corn, soybeans and wheat are usually in bushels per acre; hay and silage in tons per acre; cotton in pounds or bales per acre. This calculator works in whatever production unit you enter, so the yield comes out in that unit per acre.
Why use per-acre yield?
Per-acre yield removes the effect of field size, so you can compare a small plot with a large one, or this year with last year, on equal terms. It is the figure behind revenue projections, land rent, crop insurance and input decisions.
How do I measure harvested area?
Harvested area in acres comes from a field boundary measured by GPS, a survey, or mapping tools built on data such as the US Geological Survey's. One acre is 43,560 square feet. Use the area actually harvested, which may be less than the planted area.
Should I adjust for moisture?
For grains sold at a standard moisture, yes. Wet grain weighs more, so production is often adjusted to a standard moisture content (for example 15.5 percent for corn) before computing yield. Adjust production to that standard first, then divide by area.
Official sources
- Land area and mapping data for acreage measurement: US Geological Survey (USGS). As at 25 June 2026.
Reviewed by the CalculatorHub team, edited by James Graham, 25 June 2026. See our methodology. This is general information, not financial, tax, legal or investment advice.