Corn Yield Calculator
Estimate corn yield before harvest using the yield-component method.
The weight factor carries all the uncertainty
It represents kernels per bushel in thousands and ranges from about 75 in an excellent season to 105 in a poor one, with 90 the usual default. That spread means the same field count can imply yields 30% apart, so sample several locations and treat the result as a range rather than a number.
What this page needs from you
This page asks for ears per 1/1000 acre, kernel rows per ear, kernels per row and kernel weight factor. From those it returns estimated yield in bushels/acre, together with kernels per ear, in tonnes per hectare, at a 85 weight factor and at a 95 weight factor. Every figure updates as you type, and nothing you enter leaves your browser.
Rates are regional, and local advice beats a general figure
Soil type, rainfall, variety and season change the right answer more than the arithmetic does. Use this to plan and to check an order, and check the figure against your local extension service, agronomist or supplier before committing to a whole field.
The formula
Yield (bu/ac) = ears × rows × kernels per row ÷ weight factor
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the Corn Yield Calculator
- Fill in each field with your own figures — the defaults are only there as an example.
- The result updates as you type, so there is no button to press.
- Check the breakdown under the main result for the supporting numbers.
- Use the copy button to take the result with you, or share the link to reload the same inputs.
Corn Yield Calculator — frequently asked questions
Is this corn yield calculator free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
How accurate is the result?
The maths is exact for the formula shown on the page. Accuracy in the real world depends on your inputs and on assumptions the formula cannot see, so treat the output as a well-grounded estimate rather than a quote.
Can I use it on my phone?
Yes. The page is responsive, weighs a few kilobytes and works offline once loaded, so it behaves the same on a phone as on a desktop.
What people search for
This page answers each of these searches. They are the exact phrases visitors use to find the corn yield calculator.
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed September 14, 2026 · Calculation runs client-side · No data collected · Report an error