Field Tools

Artificial Fertilizer Calculator

Enter your application rate and field size to calculate total fertilizer required. Add N, P, K, S and Mg content to see nutrient delivery per acre and hectare.

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Application Rate & Field Size

Enter your target application rate and the area to cover.

Fertilizer Name (optional)

Application Rate

Rate Unit

Field Size

Size Unit

Nutrient Composition

Optional — enter kg of each nutrient per tonne of product. Leave blank to skip.

N kg/t

P kg/t

K kg/t

S kg/t

Mg kg/t

Example: 34.5% AN = 345 kg N/t • Urea 46% = 460 kg N/t • Triple Super = 460 kg P/t

Cost Breakdown

Optional — enter cost per tonne to calculate your total fertilizer spend.

Cost per Tonne (£)

Enter an application rate and field size above to see costs.