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PakCalc

Maize Yield Calculator — Estimate Maunds per Acre

Estimate hybrid maize grain yield from plant population, cobs per plant, grains per cob and grain weight.

Updated

E.g. 75 cm rows × 18 cm spacing ≈ 30,000 plants/acre.

g
%
PKR/maund

Result

91.1 maund/acre

Estimated maize (hybrid) yield: 91.1 maund per acre (3,645 kg/acre)

Kg per acre
3,645
Tonnes per hectare
9.01
Total for 1 acre
91.1 maund
  • Estimate only. Actual results depend on variety, soil, water, weather and management.
  • Field counts vary a lot across a field — sample at least 5 spots and use the averages.

Results are estimates for planning. Actual figures depend on local conditions, prices and quotes — verify before making decisions.

About this calculator

Count a few plants or a small area in several places, enter the averages, and the calculator scales it up to maunds per acre.

Formula

kg/acre = Plants per acre × Cobs per plant × Grains per cob × 1000-grain weight ÷ 1,000,000 × (1 − losses)

Count grains per cob as rows × grains per row on a few average cobs.

Examples

  • Default field counts, 1 acre

    Estimated maize (hybrid) yield: 91.1 maund per acre (3,645 kg/acre)

How to take field counts

  • Walk the field in a W or zig-zag pattern and stop at 5–10 spots.
  • Avoid field edges, water-logged patches and unusually good or bad spots.
  • Average your counts before entering them.

Important information

  • Plant population = 4,046.86 ÷ (row spacing in m × plant spacing in m).
  • Hybrid maize 1000-grain weight is typically 250–350 g.
  • All outputs are estimates for planning. Real results depend on variety, sowing date, soil, water, weather, pests and management.

Frequently asked questions

How many maize plants per acre?

Around 28,000–35,000 plants per acre is typical for hybrid maize, depending on season and hybrid.

How do I count grains per cob?

Count the number of rows around the cob and the grains in one row, then multiply.

How accurate is a pre-harvest yield estimate?

With careful sampling it is usually within 10–20% of the final yield. Accuracy improves with more sampling spots.

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