Work out crop yield per hectare from your harvest, or total harvest from an expected yield. The tool also converts t/ha to bushels per acre for major crops.
Pick a mode: enter total harvest and area to get the yield per hectare, or area and an expected yield to estimate total harvest. Choose a crop to also see bushels.
Yield per hectare = total harvest ÷ area; total harvest = area × expected yield. Bushels are weight-based and vary by crop, so the conversion uses the standard bushel weight for the crop you pick. Actual yields depend on variety, weather, soil and management.
How to Calculate Crop Yield per Hectare
Divide the weight you harvested by the area you actually harvested. If a field gives 48 tonnes from 6 hectares, the yield is 48 ÷ 6 = 8 t/ha. For wheat that’s about 119 bushels per acre. Use the cropped area, not the mapped field, or the yield will look lower than it really was.
- Get the harvest weight from weighbridge tickets or buyer statements: 48 t.
- Correct wet grain to the standard moisture for your crop and market.
- Measure the harvested area, leaving out headlands and uncropped margins: 6 ha.
- Divide: 48 ÷ 6 = 8 t/ha.
The crop yield calculation formula works both ways: Yield = Harvest ÷ Area, and Total harvest = Expected yield × Area. Working in acres? To calculate crop yield per acre, divide by acres instead.
Tonnes per Hectare to Bushels per Acre
One tonne per hectare equals about 892 lb per acre, so divide that by the crop’s bushel weight. In the United States a bushel of wheat or soybeans is 60 lb, corn is 56 lb and barley 48 lb, which is why the same t/ha figure gives different bushel counts.
| Yield (t/ha) | Wheat (bu/ac) | Corn (bu/ac) | Barley (bu/ac) |
|---|---|---|---|
| 4 | 59.5 | 63.7 | 74.3 |
| 6 | 89.2 | 95.6 | 111.5 |
| 8 | 119.0 | 127.5 | 148.7 |
| 10 | 148.7 | 159.3 | 185.9 |
How many bushels of wheat per tonne? About 36.7 at 60 lb a bushel. Converting with the wrong crop factor is an easy mistake.
Tips for Accurate Yield Numbers
Small errors in harvest weight or area carry straight through to the answer, so most surprises trace back to one of these inputs.
Use the harvested area, not the field area. Headlands, wet patches, tramlines and field margins that were never cropped shrink the real area.
Adjust for grain moisture. Freshly combined grain carries extra water weight, and grain is traded at a standard moisture that varies by crop and market, so correct wet weights before comparing with district averages.
- Compare against several seasons, since the weather in a single year can swing yields a long way.
- Split results by field or variety to see where inputs are paying off.
- Treat expected-yield forecasts as planning figures, since weather and pests decide the real harvest.
For grain storage, haulage or forward sales, run a cautious and an optimistic expected yield and plan around the range. The crop yield article on Wikipedia explains how yields are measured and reported around the world.