Calculator for Estimating Crop Yield

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 A calculation procedure to assist you to estimate your crop yield is available at Using 1,000 Kernel Weight for Calculating Seeding Rates and Harvest Losses.

In estimating the yield of a crop, the producer would be counting the total number of viable kernels in a known area (foot2). These are then weighed, or a standard 1,000 kernel weight can be used. This can be extrapolated to an acreage level to give an estimate of potential crop yield.

Estimating crop yield
Yield (in kg/acre*) can be estimated using the following formula:

Yield= Heads/ft2 x seeds/head x
x '1,000 kernel weight' x
x 0.43560
Using an HRS wheat example with estimates of 26 heads/ft2 , 24 seeds/head and the '1,000 kernel weight of 35 grams (from the table), the yield works out to: = 26 heads/ft2 x 24 seeds/head x x 35 x 0.043560 = 951.4 kg/acre Given wheat at 27.215 kg/bu, the estimated yield would be about 35 bu./ac.

The logic for the calculation is provided below:

Kernels / acre = Heads/ft2 x Seeds/head x 43,560 ft/ac

Grams per acre = (Kernels per acre x kernel weight) / 1,000

Kg/ac = grams per acre / 1,000

*-AFSC uses kg/ac for insurance purposes

For more information contact:
Alberta Ag-Info Centre at 310-FARM (3276)

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For more information about the content of this document, contact Anatoliy Oginskyy.
This document is maintained by Mary Ann Nelson.
This information published to the web on September 9, 2002.
Last Reviewed/Revised on July 10, 2018.