Harvest Calculator
Everyday harvest math. Free, without signing in.
Convert bushels to pounds or pounds to bushels, calculate net truck weight and bushels per acre, estimate grain moisture shrink, and plan loads to haul.
Use standard grain conversion factors for corn, soybeans, wheat, barley, and oats, or enter your own pounds-per-bushel factor.
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Real calculator screens with example values.
Convert a scale weight
Example: 33,300 lb of corn becomes 594.64 bu at 56 lb/bu.
Find the grain on a truck
Example: 80,000 lb gross minus 30,000 lb tare gives 50,000 lb of grain.
Plan the loads to haul
Example: 2,500 bu at 1,000 bu per load needs 3 loads.
Formulas and examples
Use pounds (lb), US bushels (bu), and acres (ac).
Pounds to bushels (lbs to bu)
Convert a grain-cart or truck scale weight to bushels using the selected crop's pounds-per-bushel factor.
Bushels = grain pounds ÷ pounds per bushel
56,000 lb of corn ÷ 56 lb/bu = 1,000 bu.
Bushels to pounds (bu to lbs)
Find the weight of grain in pounds from its bushels. The conversion factor depends on the crop.
Pounds = bushels × pounds per bushel
1,000 bu of soybeans × 60 lb/bu = 60,000 lb.
Net grain truck weight
Subtract empty truck weight (tare) from loaded truck weight (gross) to find the grain carried in the truck.
Net grain weight = gross weight − tare weight
An 80,000 lb loaded truck minus a 30,000 lb empty truck carries 50,000 lb of grain. Choose a crop to also see bushels.
Grain yield per acre
Calculate corn, soybean, or other grain yield in bushels per acre from harvested bushels and harvested acres.
Yield = harvested bushels ÷ harvested acres
16,000 bu from 80 acres = 200 bu/ac.
Grain moisture shrink
Estimate the weight lost as water when drying grain from its current moisture percentage to a target moisture percentage.
Dry pounds = wet pounds × (100 − current moisture) ÷ (100 − target moisture)
Estimate grain weight after drying, then convert it to bushels for the selected crop. This calculates water loss only; handling losses and buyer shrink schedules are not included.
Grain hauling loads needed
Estimate how many truck or grain-cart loads you need from the total bushels and the capacity per load.
Loads = grain bushels ÷ capacity per load, rounded up
2,500 bu with a 1,000 bu load capacity requires 3 loads; the final load contains 500 bu.
Grain conversion factors
These standard weight factors convert pounds to bushels; they are not a measurement of your grain’s test weight.
| Crop | lb/bu |
|---|---|
| Corn | 56 |
| Soybeans | 60 |
| Wheat | 60 |
| Barley | 48 |
| Oats | 32 |
Harvest calculator questions
How many pounds are in a bushel of corn or soybeans?
The calculator uses 56 pounds per US bushel for corn and 60 pounds per US bushel for soybeans. Wheat uses 60, barley 48, and oats 32. These are standard conversion factors, not measurements of your grain's test weight; you can adjust the factor for your calculation.
How do I convert bushels to pounds, or lbs to bu?
Multiply bushels by the selected crop's pounds-per-bushel factor to get pounds. Divide pounds by that factor to get bushels. For example, 1,000 bushels of corn at 56 lb/bu weighs 56,000 pounds. Choose the crop first so the conversion uses the right factor.
How do I calculate bushels per acre?
Divide harvested bushels by harvested acres. For example, 16,000 bushels harvested from 80 acres gives a yield of 200 bushels per acre. Use the acreage that produced the grain you are measuring.
Does the moisture shrink calculator include elevator discounts?
No. It estimates water loss when drying grain to a target moisture level. It does not include handling loss, drying charges, quality discounts, or a buyer's shrink schedule. Use your buyer's terms when estimating settlement or sale proceeds.
Is the Harvest Calculator free without an account?
Yes. All six harvest tools and the basic math keypad are available without signing in. Recent calculations are saved on this device and do not create farm records. For team weight records, fields, and destinations, request beta access to Grain Tracker.