01
Formula
Bushels = pounds × (100 − harvest) ÷ (100 − target) ÷ 56.
Ear-count bushels = kernels per ear × ears per acre ÷ 90,000. The yield calculator uses 56 pounds as the corn bushel. It does not apply a test-weight discount beyond moisture.
Apply for financingCorn yield
Corn yield calculator for moisture and ear counts
This corn yield calculator adjusts pounds per acre from harvest moisture to a target moisture and divides by 56 pounds per bushel. The ear-count mode is a yield calculator that uses kernels per ear times ears per acre, divided by 90,000. Both are field estimates. A scale ticket is the number you sell.
Method
Dry yield
135.25bu/acre
Test weight basis56 lb per bushel
Harvest moisture20.00%
Target moisture15.50%
Planning estimate from the numbers you enter. Coverage, density, waste and price are assumptions, not a supplier quote or an engineering specification.
How it works
Dry the weight to the target moisture, then divide by 56.
Dry pounds equal harvest pounds times (100 minus harvest moisture) divided by (100 minus target moisture). Bushels per acre equal those dry pounds divided by 56. Eight thousand pounds per acre at 20 percent moisture, taken to 15.5 percent, is 8,000 times 80 divided by 84.5, then divided by 56, which is 135.08 bushels per acre. The ear mode divides kernels per ear times ears per acre by 90,000. Four hundred eighty kernels and 30,000 ears is 160 bushels per acre. The 90,000 kernel rule is a planning shortcut, not a test weight. Change the target moisture if your buyer uses a different shrink.
02
Example
8,000 pounds per acre at 20 percent, shrunk to 15.5 percent.
The corn yield calculator shows 135.08 bushels per acre. The ear example, 480 kernels and 30,000 ears, is 160.00 bushels per acre under the 90,000 kernel rule.
03
Tips
Moisture has to be the moisture of the sample you weighed.
A wet wagon weight with a dry moisture reading overstates the bushels. Weigh and test the same lot. The page will not stop you from typing a target moisture above the harvest moisture. That would invent water.
04
Equipment
The combine, the cart, and the dryer are the machines.
Dengaro arranges financing for farm equipment. Yield is not a loan amount.
Important questions
Know what to expect.
Why 56 pounds?+
A standard US corn bushel is 56 pounds at the reference moisture you are shrinking to. If you are estimating a crop that uses a different bushel weight, this corn form is the wrong bushel.
What is the 90,000 kernel rule?+
It is a field shortcut: about 90,000 kernels in a 56 pound bushel. Kernel size moves the real count. Use the scale mode when you have a weight.
Does this include dockage?+
No. It only adjusts moisture and divides by 56, or counts kernels. Foreign material and damage are the buyer's ticket.
Can I use the yield calculator on soybeans?+
Not with these constants. Soybeans are 60 pounds per bushel and a different moisture base. The formula shape is the same, but this page is set to corn.
Financing built into the sale