Estimate plants per hectare or per acre from row spacing and in-row spacing.
| Plants per hectare | – |
Use this calculator to estimate field density for maize, vegetables, or trees when you know the distance between rows and the distance between plants along the row.
The calculation is: plants per hectare = 10 000 ÷ (row spacing × in-row spacing), with both spacings in metres. Feet are converted automatically before the calculation. One hectare is 10 000 m², so the product of the two spacings is the ground area occupied by one plant.
This is a geometric planting density. It does not account for skips, doubles, germination losses, headlands, or later thinning.
Row spacing: Distance between adjacent rows. Enter the value in metres (m) or feet (ft). For example, 0.75 m is a common 75 cm maize row.
In-row spacing: Distance between plants along the row, in the same length unit.
Plants per area: Estimated population in plants per hectare. If you need plants per acre, divide by 2.471, or convert the result after noting that the formula itself is per hectare.
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