After the weigh-in
Give the harvest an area to stand on
A pile of produce has a weight, but weight alone cannot tell you how productive its field was. A 12,000 kg harvest from two hectares means something different from 12,000 kg gathered from ten hectares.
Enter the weight you actually harvested and the area that produced it. The calculator shows that same result per hectare and per acre, so you can compare records kept in different units without pretending you harvested another field.
How to use the calculator
Choose the harvest weight
Weigh the crop from the area you want to describe. Enter the combined weight in kilograms or pounds. If you want marketable yield, use only the marketable weight and keep that basis in your record; do not mix it with total harvested weight.
Match its harvested area
Enter the area that gave you that weight. Choose hectares or acres for a field, or square metres or feet for a smaller harvested plot. Leave out unharvested land. If the area is a sample plot, the result describes that plot only.
Read the paired rates
Select Calculate area yield. The large rate follows the area unit you chose. The cards show kg/ha, lb/acre and metric tonnes/ha together, plus the converted weight and area used in the division.
One harvest, two standard views
A field record
12,000 kg from 2 hectares
Imagine a grower has finished weighing one crop's harvest. The scale total is 12,000 kg, and the area actually harvested is 2 ha. Divide the weight by the area: 6,000 kg/ha.
In metric tonnes, that is 6 t/ha. The very same measured harvest is about 5,353.07 lb/acre. These are different labels for one area yield, not three separate harvests.
When your record is in pounds and acres
A different field record shows 10,000 lb gathered from five harvested acres. Dividing first gives 2,000 lb/acre. The calculator then shows about 2,241.70 kg/ha, or 2.24 t/ha, for that same harvest rate.
Enter the measured pounds and acres directly. There is no need to change the scale weight to kilograms by hand before using the form. If you switch either unit selector later, check the number beside it: a new unit changes what that unchanged number means.
Why the denominator must match the harvest
Suppose the 12,000 kg came from only two harvested hectares in a five-hectare planting. Dividing it by all five planted hectares would show 2,400 kg/ha. That may be useful for a different whole-planting accounting question, but it is not the measured yield of the two hectares that produced the weighed crop.
Standardized harvest yield = harvested weight ÷ area that produced that weight.
The calculator converts the inputs to kilograms and hectares first, divides them, then converts the resulting rate to pounds per acre. One acre is 0.40468564224 ha and one pound is 0.45359237 kg. A metric tonne is 1,000 kg.
The unit selectors do not change the numbers in the fields. If a record says 10,000 lb and you switch the weight selector to kg, re-enter the equivalent kilogram weight before calculating; the number 10,000 now means something else.
A small plot gives a rate, not a field forecast
If 125 kg comes from a 250 m² harvested plot, its area yield is 5,000 kg/ha, or about 4,460.90 lb/acre. That arithmetic is sound. It does not mean every hectare in the field will produce 5,000 kg.
Choose a representative sample and account for field variation before projecting total production. The separate Crop Yield Calculator handles sample-to-field estimates; this page deliberately stays with the measured harvest.
Comparisons need the same harvest basis
Weight condition
Fresh and dried produce carry different water weight. A rate from fresh weight cannot be compared directly with a dry-weight rate, even when both say kg/ha.
What was included
Total harvest and marketable harvest answer different questions. Keep the same sorting and loss rules in the records you compare.
Time and crop cycle
Several pickings from one crop can be added before dividing by that crop's harvested area. A second crop on the same land is a new crop cycle, not extra area for the first harvest.
Bushels are intentionally absent. Their crop-specific weight and moisture conventions need more information than this page asks for. Use the weight rate here when comparing crops or records whose commodity conversion is unknown.
Check the figures before sharing them
- Trace the weight to the right plot. Mixed loads from several fields need matched combined area or separate records.
- Use harvested, not merely planted, area. Note exclusions and incomplete harvests.
- Keep the units in the report. “6,000” without kg/ha is not a usable yield figure.
- Record crop and weight basis. Fresh, dry, total and marketable yields are different measurements.
This calculator standardizes a measured yield. It does not decide whether that yield is good for a crop, estimate next season's harvest or convert to revenue.