Manure Nutrient Value Calculator

N-P-K value from manure type and application rate.

Manure type

Application rate (tons/acre)

Field size (acres)

Excess moisture (%)

N price ($/lb)

P₂O₅ price ($/lb)

K₂O price ($/lb)

Tab to move between fields

Fertilizer value ($/acre)

$38.25

Value per ton of manure ($)

$7.65

Available N (lbs/acre)20

Available P₂O₅ (lbs/acre)17

Available K₂O (lbs/acre)36

Total N applied (lbs/acre)50

N value ($/acre)$11

P₂O₅ value ($/acre)$11.05

K₂O value ($/acre)$16.2

Total manure needed (tons)50

Total field value ($)$382.5

How to Use This Calculator

Select Manure Type (Dairy, Beef Feedlot, Swine, Poultry Litter, or Horse) to load typical nutrient values.
Enter the application rate in tons/acre or tons total.
Review Nutrient Value ($/ton) and Total Value ($) — this is what you save on commercial fertilizer.
Check N Availability (lbs/acre) separately from total N — only a fraction is plant-available in the first year.
Compare P₂O₅ and K₂O applied per acre against your soil test recommendations to avoid over-application.

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