Crop Yield Estimator & Per Acre & Total
Forecasts yield for grains
“This tool gets better every time someone says what confused them.
Predict your total harvest and yield per acre before you cut — from plant spacing and yield per plant, or from a weighed sample — with an optional revenue estimate.
Enter your field
Population is set by spacing — 8.33 plants/m². Use an average single-plant yield.
Next: sample several spots and average them for a reliable figure, then feed this into the Crop Profit Calculator to check the margin. Real yield drops a little for harvest and handling losses.
A pre-harvest estimate — actual yield varies with crop health, weather and harvest losses. Average several samples for accuracy.
Yield estimation — key facts
- Per acre
- kg/m² × 4,046.86
- Per hectare
- kg/m² × 10,000
- Plant population
- 1 ÷ (plant × row spacing)
- Plant method
- population × yield/plant
- Sample method
- sample weight ÷ sample area
- Samples
- average 5–10 spots
- Allow for
- harvest & handling losses
- Privacy
- Runs in your browser; nothing uploaded
Know your harvest before you cut it
A good yield estimate turns guesswork into planning — it tells you how much storage, transport and labour to arrange and roughly what the crop is worth. The tool works from a single core figure, kilograms per square metre, reached either by multiplying plant population by the average yield per plant, or by weighing a measured sample patch and dividing by its area. From there it scales to per acre, per hectare and the whole-field total in one step.
The sample method is the more reliable for dense crops: harvest several representative spots, weigh them and average, because one patch can mislead. The spacing method suits widely spaced crops where you can judge a typical single-plant yield. Either way, remember the estimate is a potential — shave off a margin for gaps, pests and harvest losses, then feed the result and your price into the Crop Profit Calculator to check the margin.
Forecast the harvest
Get total tonnes and yield per acre before harvest to plan storage and transport.
Two proven methods
Estimate from plant spacing and per-plant yield, or from a weighed sample area.
Value the crop
Add a price to see the expected revenue and feed it into a profit check.
Compare fields
Sample different fields or varieties on equal terms to see which is performing.
Frequently Asked Questions
How do I estimate crop yield before harvest?+
Two ways: from plant spacing and the average yield per plant (population × per-plant yield), or from a weighed sample — harvest a measured patch, weigh it, and scale that rate to the whole field. This tool does both and reports yield per acre, per hectare and the total.
How do I calculate yield per acre?+
Work out the yield per square metre, then multiply by 4,046.86 (the number of m² in an acre). For example 2.5 kg/m² is about 10,117 kg per acre. The tool converts automatically and also shows per-hectare and total figures.
What is the sample method?+
Harvest a small, representative area (say 1–10 m² or a set length of row), weigh the produce, and divide by the area to get kg/m². Scaling that up estimates the field yield. Sampling several spots and averaging gives a far more reliable number than a single patch.
How do I estimate from plant spacing?+
Plant population per square metre is 1 ÷ (plant spacing × row spacing) in metres. Multiply by the average yield per plant to get kg/m². So at 0.2 m × 0.6 m spacing (about 8.3 plants/m²) and 0.5 kg per plant, that's roughly 4.17 kg/m².
Why is my actual yield lower than the estimate?+
Estimates assume even, healthy plants and no losses. Real harvests lose some to gaps and weak plants, pests and disease, weather, and harvesting and handling losses. Treat the figure as a potential and shave off a realistic margin for losses.
How many samples should I take?+
The more variable the field, the more samples — five to ten spots spread across the field, avoiding edges and untypical patches, and then averaged, gives a dependable estimate. One sample can be misleading if it lands on an unusually good or poor area.
Can I estimate revenue from yield?+
Yes — add your expected price per kilogram and the tool multiplies it by the total yield for a revenue estimate. Feed that, with your costs, into the Crop Profit Calculator to see the margin.
Does this work for grains and fruit too?+
Yes — the maths is the same for any crop measured by weight. Use yield per plant for spaced crops like tomato, cabbage or fruit trees, and the sample method for dense crops like wheat, rice or fodder.
What units does it use?+
Spacing in metres, yields in kilograms, and it reports kg/m², kg and tonnes per acre and hectare, plus the total over your field. Choose your field's area unit (acre, hectare, bigha and more).
How accurate is a pre-harvest yield estimate?+
It's a solid planning figure, typically within range when you sample well, but never exact — yield keeps changing until harvest with weather and crop health. Use it to plan storage, transport, labour and sales, and refine it closer to harvest.
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