Acreage Calculator for Farmers
Trace any field, pasture, or pivot on satellite imagery and get acreage instantly — in acres or hectares — with real spherical-geometry math behind it. Free, no account needed.
What farmers measure with it
- Planted acres. Get the true worked acreage of a field — minus waterways, headlands, and odd corners — so seed and chemical orders match reality, not the deeded acreage.
- Application rates. Accurate acres make fertilizer, lime, and spray math straightforward: rate × measured acres, no guessing.
- Pasture and fencing. Measure paddock areas for stocking rates and perimeter distance for fence material.
- Rented ground. Verify the acreage behind a cash-rent agreement before you sign it.
How to measure a field
- Find the field. Search a nearby address or town and pan to the field, or ask the built-in assistant to take you there.
- Trace the boundary. Click along the actual field edge — follow the crop line, not the fence line or tree canopy. Irregular boundaries are fine; use as many points as you need.
- Read the acreage. The area shows live as you draw. Switch to hectares for program paperwork, or ask the assistant to convert.
Frequently asked questions
How accurate is satellite acreage for fields?
On open ground with clear boundaries, a careful trace usually lands within 1–3% of the true acreage. Wooded or shadowed edges add uncertainty; trace the field edge, not the tree canopy, and the estimate stays solid for input planning.
Can it handle irregular field shapes and pivots?
Yes. Click as many boundary points as the field needs — irregular shapes are exactly what tracing is for. For center-pivot circles, the assistant can draw a circle of a given area or radius right on the field.
What units does it support?
Acres, hectares, square feet, square meters, and more — switch at any time. Distance tools give feet, meters, and miles for fence lines and field edges.
Does it cost anything?
No — measuring is free with no account. A free account lets you save each field as a named map and come back to it season after season.