Online Acreage Calculator
An online acreage calculator that works right in your browser — nothing to download, no sign-up. Measure any plot on the map below, or type in dimensions to convert them to acres. Results in acres, hectares, square feet and more.
Open the full-screen map calculator →
Two Ways to Calculate Acreage Online
1. Measure on the map (above) — Trace a boundary on the satellite view and the acreage is calculated live. Best when you don’t know the dimensions or the land is irregular.
2. Convert from dimensions — If you already have measurements, use one of these instant calculators:
- Acres to square feet converter — 1 acre = 43,560 ft²
- Square feet to acres converter
- Acreage calculator by feet — length × width
- Lot size calculator
- Four-sides acreage calculator
Why Use an Online Acreage Calculator?
- No download — Runs in any modern browser on desktop, tablet or phone.
- All units built in — Results shown in acres, hectares, square meters and square feet as you go.
- Instant — Acreage appears as you draw or type; switch units with one tap.
- Any shape — The map handles irregular and many-sided plots that simple formulas can’t.
Want It on Your Phone?
For measuring in the field, the Marea app adds live GPS, offline maps, saved measurements and KML export on top of the same acreage calculator. Available on iOS and Android.
Frequently Asked Questions
Can I calculate acreage online without downloading anything?
Yes. This calculator runs in your browser with no download or sign-up. You can measure on a map or convert dimensions to acres.
Do I need to download anything?
No. The online calculator works directly in your web browser. The Marea app is available if you want to measure in the field with GPS.
How do I calculate acreage online?
Either trace your land's boundary on the map to measure it directly, or enter known dimensions into one of the conversion calculators to get the acreage.
Does it work on mobile browsers?
Yes, the online acreage calculator works on phones and tablets as well as desktop.
Try Marea Today
Download Marea on iOS or Android and start measuring in seconds.
