Convert square foot to acre
1 ft² = 0.00002295684114 ac
1 ft² = 0.000022957 ac
1 ft² in every area unit
| microbarn | 9.2903e+32 μb |
| millibarn | 9.2903e+29 mb |
| barn | 9.2903e+26 b |
| square nanometer | 9.2903e+16 nm² |
| square micrometer | 92,903,000,000 μm² |
| circular mil | 183,350,000 cmil |
| thousand circular mils | 183,350 kcmil |
| square millimeter | 92,903 mm² |
| square centimeter | 929.03 cm² |
| square inch | 144 in² |
| square decimeter | 9.2903 dm² |
| square foot | 1 ft² |
| square yard | 0.11111 yd² |
| square meter | 0.092903 m² |
| tsubo | 0.028103 tsubo |
| square rod | 0.0036731 rd² |
| are | 0.00092903 a |
| square chain | 0.00022957 ch² |
| dunam | 0.000092903 dunam |
| rood | 0.000091827 rood |
| acre | 0.000022957 ac |
| hectare | 0.0000092903 ha |
| square kilometer | 9.2903e-08 km² |
| square mile | 3.5870e-08 mi² |
How the conversion works
Multiply by 0.00002295684114 to go from square foot to acre, or divide by it to go back. Every conversion on this site routes through the SI value (m²) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? acre to square foot — 1 ac = 43,560 ft².
square foot to acre — common values
| 1 ft² | 0.000022956841 ac |
| 2 ft² | 0.000045913682 ac |
| 3 ft² | 0.000068870523 ac |
| 5 ft² | 0.00011478421 ac |
| 10 ft² | 0.00022956841 ac |
| 15 ft² | 0.00034435262 ac |
| 20 ft² | 0.00045913682 ac |
| 25 ft² | 0.00057392103 ac |
| 50 ft² | 0.0011478421 ac |
| 75 ft² | 0.0017217631 ac |
| 100 ft² | 0.0022956841 ac |
| 250 ft² | 0.0057392103 ac |
| 500 ft² | 0.011478421 ac |
| 1000 ft² | 0.022956841 ac |