Rate conversion
lb/acre to kg/ha converter
Convert application rates between pounds per acre and kilograms per hectare for fertilizer, seed, lime and spray products.
Rate converter
Uses exact NIST pound and acre definitions.
Exact conversion
lb/acre = kg/ha × 0.892179
The factor is 0.45359237 kg/lb ÷ 0.40468564224 ha/acre, both exact definitions.
Common rate conversions
| lb/acre | kg/ha |
|---|---|
| 10 | 11.2 |
| 25 | 28.0 |
| 50 | 56.0 |
| 100 | 112.1 |
| 150 | 168.1 |
| 200 | 224.2 |
| 250 | 280.2 |
| 300 | 336.3 |
| 400 | 448.3 |
| 500 | 560.4 |
Worked examples
A nitrogen rate of 150 lb/acre is 150 × 1.120851 ≈ 168.1 kg/ha. A European recommendation of 200 kg/ha is 200 × 0.892179 ≈ 178.4 lb/acre.
To also estimate the total product for a field, use the fertilizer application rate calculator, which combines this conversion with your field area.
FAQ
How do I convert lb/acre to kg/ha?
Multiply pounds per acre by 1.120851. The factor comes from exact definitions: 0.45359237 kg per pound divided by 0.40468564224 hectares per acre.
How do I convert kg/ha to lb/acre?
Multiply kilograms per hectare by 0.892179, which is the inverse of the 1.120851 factor.
Does this converter work for seeding and pesticide rates too?
Yes. The conversion is a pure unit conversion between mass per area units, so it applies to any per-area rate: fertilizer, seed, lime or spray product.