Acres to Square feet converter

Type a value in either box and the other fills in instantly — no button, no waiting.

Type in either box — the other updates instantly.

Quick reference

AcresSquare feet
1 acres43560 square feet
2 acres87120 square feet
5 acres217800 square feet
10 acres435600 square feet
25 acres1.089e+06 square feet
50 acres2.178e+06 square feet
100 acres4.356e+06 square feet

About this tool

1 acre = exactly 43,560 square feet (a furlong by a chain, historically). Multiply acres by 43,560. Like every tool on this site, the conversion happens on your device — the numbers you type never leave your browser.

Common questions

How do I convert acres to square feet by hand? 1 acre = exactly 43,560 square feet (a furlong by a chain, historically). Multiply acres by 43,560.

Is this converter exact? It uses the standard defined conversion factors and rounds the display to at most 6 decimal places — more precision than any tape measure, scale, or recipe can use.

Private by design: this tool runs entirely in your browser. Nothing you type or open here is uploaded, stored, or tracked.