square foot | 1 sq ft | 2 sq ft | 3 sq ft | 4 sq ft | 5 sq ft | 6 sq ft | 7 sq ft | 8 sq ft | 9 sq ft | 10 sq ft | 11 sq ft | 12 sq ft | 13 sq ft | 14 sq ft | 15 sq ft | 16 sq ft | 17 sq ft | 18 sq ft | 19 sq ft | 20 sq ft | 21 sq ft | 22 sq ft | 23 sq ft | 24 sq ft | 25 sq ft | 26 sq ft | 27 sq ft | 28 sq ft | 29 sq ft | 30 sq ft | 31 sq ft | 32 sq ft | 33 sq ft | 34 sq ft | 35 sq ft | 36 sq ft | 37 sq ft | 38 sq ft | 39 sq ft | 40 sq ft | 41 sq ft | 42 sq ft | 43 sq ft | 44 sq ft | 45 sq ft | 46 sq ft | 47 sq ft | 48 sq ft | 49 sq ft | 50 sq ft | 51 sq ft | 52 sq ft | 53 sq ft | 54 sq ft | 55 sq ft | 56 sq ft | 57 sq ft | 58 sq ft | 59 sq ft | 60 sq ft | 61 sq ft | 62 sq ft | 63 sq ft | 64 sq ft | 65 sq ft | 66 sq ft | 67 sq ft | 68 sq ft | 69 sq ft | 70 sq ft | 71 sq ft | 72 sq ft | 73 sq ft | 74 sq ft | 75 sq ft | 76 sq ft | 77 sq ft | 78 sq ft | 79 sq ft | 80 sq ft | 81 sq ft | 82 sq ft | 83 sq ft | 84 sq ft | 85 sq ft | 86 sq ft | 87 sq ft | 88 sq ft | 89 sq ft | 90 sq ft | 91 sq ft | 92 sq ft | 93 sq ft | 94 sq ft | 95 sq ft | 96 sq ft | 97 sq ft | 98 sq ft | 99 sq ft | 100 sq ft |
acre | 2.2956841152274 × 10-5 ac | 4.5913682304548 × 10-5 ac | 6.8870523456822 × 10-5 ac | 9.1827364609096 × 10-5 ac | 0.0001148 ac | 0.0001377 ac | 0.0001607 ac | 0.0001837 ac | 0.0002066 ac | 0.0002296 ac | 0.0002525 ac | 0.0002755 ac | 0.0002984 ac | 0.0003214 ac | 0.0003444 ac | 0.0003673 ac | 0.0003903 ac | 0.0004132 ac | 0.0004362 ac | 0.0004591 ac | 0.0004821 ac | 0.0005051 ac | 0.0005280 ac | 0.0005510 ac | 0.0005739 ac | 0.0005969 ac | 0.0006198 ac | 0.0006428 ac | 0.0006657 ac | 0.0006887 ac | 0.0007117 ac | 0.0007346 ac | 0.0007576 ac | 0.0007805 ac | 0.0008035 ac | 0.0008264 ac | 0.0008494 ac | 0.0008724 ac | 0.0008953 ac | 0.0009183 ac | 0.0009412 ac | 0.0009642 ac | 0.0009871 ac | 0.0010101 ac | 0.0010331 ac | 0.0010560 ac | 0.0010790 ac | 0.0011019 ac | 0.0011249 ac | 0.0011478 ac | 0.0011708 ac | 0.0011938 ac | 0.0012167 ac | 0.0012397 ac | 0.0012626 ac | 0.0012856 ac | 0.0013085 ac | 0.0013315 ac | 0.0013545 ac | 0.0013774 ac | 0.0014004 ac | 0.0014233 ac | 0.0014463 ac | 0.0014692 ac | 0.0014922 ac | 0.0015152 ac | 0.0015381 ac | 0.0015611 ac | 0.0015840 ac | 0.0016070 ac | 0.0016299 ac | 0.0016529 ac | 0.0016758 ac | 0.0016988 ac | 0.0017218 ac | 0.0017447 ac | 0.0017677 ac | 0.0017906 ac | 0.0018136 ac | 0.0018365 ac | 0.0018595 ac | 0.0018825 ac | 0.0019054 ac | 0.0019284 ac | 0.0019513 ac | 0.0019743 ac | 0.0019972 ac | 0.0020202 ac | 0.0020432 ac | 0.0020661 ac | 0.0020891 ac | 0.0021120 ac | 0.0021350 ac | 0.0021579 ac | 0.0021809 ac | 0.0022039 ac | 0.0022268 ac | 0.0022498 ac | 0.0022727 ac | 0.0022957 ac |
The square foot (plural square feet; abbreviated sq ft, sf, ft2) is an imperial unit and U.S. customary unit (non-SI, non-metric) of area, used mainly in the United States and partially in Bangladesh, Canada, Ghana, Hong Kong, India, Malaysia, Nepal, Pakistan, Singapore and the United Kingdom. It is defined as the area of a square with sides of 1 foot.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
square foot | sq ft | ≡ 1 ft × 1 ft | ≡ 9.290304×10−2 m2 | Imperial/US |
square feet | acres | square feet | acres |
---|---|---|---|
1 | ≡ 2.2956841152274E-5 | 6 | ≡ 0.00013774104691364 |
2 | ≡ 4.5913682304548E-5 | 7 | ≡ 0.00016069788806592 |
3 | ≡ 6.8870523456822E-5 | 8 | ≡ 0.00018365472921819 |
4 | ≡ 9.1827364609096E-5 | 9 | ≡ 0.00020661157037047 |
5 | ≡ 0.00011478420576137 | 10 | ≡ 0.00022956841152274 |
The acre is a unit of land area used in the imperial and US customary systems. It is defined as the area of 1 chain by 1 furlong (66 by 660 feet), which is exactly equal to 1⁄640 of a square mile, 43,560 square feet, approximately 4,047 m2, or about 40% of a hectare.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
acre | ac | ≡ 1 ch × 10 ch = 4840 sq yd | ≡ 4046.8564224 m2 | Imperial/US |
acres | square feet | acres | square feet |
---|---|---|---|
1 | ≡ 43559.999974167 | 6 | ≡ 261359.999845 |
2 | ≡ 87119.999948333 | 7 | ≡ 304919.99981917 |
3 | ≡ 130679.9999225 | 8 | ≡ 348479.99979333 |
4 | ≡ 174239.99989667 | 9 | ≡ 392039.9997675 |
5 | ≡ 217799.99987083 | 10 | ≡ 435599.99974167 |
square feet | acres |
---|---|
1 | ≡ 2.2956841152274 × 10-5 |
43,559.9999742 | ≡ 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |