Thousand Grain Weight (TGW) Seed Calculator

Please fill in the white boxes below for your calculation

The Thousand Grain Weight (TGW) Seed Calculator calculates seed rate, drilling target and the quantity of seed required in tonnes.

* Please note that most seed now comes in 500 kg bulk bags – please check with us if other bag sizes are required. There may be an extra charge for non-standard bag sizes.

Seed Crop

1000 Grain weight (TGW) g
Germination %
Expected Field Losses %
Field Size Ha
Target Population Plants/m2
Drilling Target: seeds / m2
Seed Rate: KG / Ha
Quantity Required *: Tonnes