Schätzen Sie Bushels pro Acre anhand von Feldährenanzahl oder parametrischer Methode. Erhalten Sie Gesamtertrag und Umsatzprognosen.
Walk into the field, pick a representative spot, and count ears along a measured row length.
1/1,000th acre = 17.4 ft at 30" rows
Rows around × kernels per row (e.g. 16 × 32 = 512)
Standard: 15.5% (adjusted automatically)
Enter ear count and kernels per ear to estimate yield
Ear Count Formula
bu/ac = (Ears/acre x Kernels/ear) / 90,000
90,000 = approx. kernels per 56-lb bushel at 15.5% moisture
Estimating corn yield before harvest helps farmers plan grain storage, marketing, and logistics. This calculator offers two proven methods:
The ear count method is the most widely used pre-harvest estimation technique. Walk into the field, measure a sample area, count ears, and count kernels per ear. The calculator converts your counts to bushels per acre.
The Formula
bu/ac = (Ears per acre × Kernels per ear) ÷ 90,000
The 90,000 kernel factor represents approximately how many kernels fill one 56-pound bushel at 15.5% moisture.
The model method uses agronomic factors to predict yield based on corn variety, soil type, irrigation, climate, planting density, rainfall, and fertilizer application. This is useful for pre-season planning or when you can't do a field count.
US corn is marketed at a standard 15.5% moisture basis. If your corn is wetter (e.g. 20% at harvest), the calculator automatically adjusts yield downward to the dry-weight equivalent. The formula is:
Adjusted bu/ac = Measured bu/ac × (100 − actual%) ÷ 84.5
| Region | Avg Yield (bu/ac) | Notes |
|---|---|---|
| US National Average | 175–180 | 2023–2025 USDA average |
| Iowa / Illinois | 200–220 | Core Corn Belt |
| Nebraska (irrigated) | 210–230 | Center-pivot irrigation |
| Southern US | 140–170 | Heat stress, variable rain |
| Contest winners | 600+ | NCGA yield contest records |
The most common method is the ear count method: count ears in a 1/1000th-acre sample and average kernels per ear, then divide by 90,000 to get bushels per acre at 15.5% moisture.
The kernel factor (typically 90, meaning 90,000) represents how many kernels fill one bushel. It ranges from 75 (very large kernels) to 105 (small kernels). Use 90 if unsure.
The US average is ~177 bu/ac. Yields above 200 bu/ac are considered excellent. Top Corn Belt fields regularly exceed 220 bu/ac.
Corn is priced at 15.5% standard moisture. Wetter corn weighs more but contains more water. Elevators dock payment for excess moisture, so yield is always expressed at the standard basis.
Take at least 3-5 samples in representative areas of the field. Avoid edges, waterways, and end rows. More samples = more accurate estimate.
Get exact field acreage for accurate yield and revenue calculations. LandLens measures any field shape with GPS.
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