Paddock Rotation Calculator
Calculate equal paddock count and area from user-selected rest and grazing periods.
A QUICK WALKTHROUGH
How to use this tool
- Enter values in the labelled units.
- Calculate and review the result and limitations.
Formula and units
N = ceil(R / G) + 1; a = A / N; R′ = (N − 1) × G
Scope and limitations
Assumes one herd moving through equal-area paddocks for the same grazing duration. Rounding up gives at least the entered rest interval. Arithmetic only: no recommendation for rest duration, grass recovery, feed availability, stocking level or agronomic suitability.
Input and precision
Area and grazing days must be positive; rest days may be zero. Every value must be finite and no greater than 1,000,000,000; calculated paddock count must not exceed 1,000,000,000. Results use floating-point arithmetic and display up to four decimal places; rounding does not improve accuracy.
Source
Independent arithmetic implementation. ToolFoundry source interface reviewed on 6 October 2026.
GOOD TO KNOW
Common questions
Are my values uploaded?
Values stay in this browser; they are not uploaded or stored.