Convert square kilometers to acres
1 km² = 247.105381467 ac — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
247.105 381 467ac
As a fraction: 39062500000/158080329
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1 km² = 247.105381467 ac
Show this value in all 25 area units
- Square kilometers km² 1
- Square hectometers hm² 100
- Square decameters dam² 10 000
- Square meters m² 1 000 000
- Square decimeters dm² 100 000 000
- Square centimeters cm² 10 000 000 000
- Square millimeters mm² 1 000 000 000 000
- Square micrometers µm² 1e+18
- Square nanometers nm² 1e+24
- Hectares ha 100
- Ares a 10 000
- Decares daa 1000
- Square inches in² 1 550 003 100.01
- Square feet ft² 10 763 910.4167
- Square yards yd² 1 195 990.0463
- Square miles mi² 0.386 102 158 542
- Acres ac 247.105 381 467
- Roods ro 988.421 525 869
- Square rods rd² 39 536.861 034 7
- Sections section 0.386 102 158 542
- Townships twp 0.010 725 059 959 5
- Roofing squares sq 107 639.104 167
- Circular mils cmil 1 973 525 241 390 000
- Barns b 1e+34
- Tsubos 坪 302 500
Every row is Square kilometer (km²) converted through the square meter, in exact rational arithmetic.
How to convert square kilometers to acres
Multiply the number of square kilometers by 247.105381467 to get acres.
Acre: Exactly 4840 square yards — historically a day of ploughing.
Square kilometer to Acre conversion table
| Square kilometers (km²) | Acres (ac) |
|---|---|
| 1 km² | 247.105 38 |
| 2 km² | 494.210 76 |
| 3 km² | 741.316 14 |
| 5 km² | 1235.5269 |
| 10 km² | 2471.0538 |
| 20 km² | 4942.1076 |
| 25 km² | 6177.6345 |
| 50 km² | 12 355.269 |
| 100 km² | 24 710.538 |
| 250 km² | 61 776.345 |
| 500 km² | 123 552.69 |
| 1000 km² | 247 105.38 |
Acre to Square kilometer conversion table
| Acres (ac) | Square kilometers (km²) |
|---|---|
| 1 ac | 0.004 046 856 4 |
| 2 ac | 0.008 093 712 8 |
| 3 ac | 0.012 140 569 |
| 5 ac | 0.020 234 282 |
| 10 ac | 0.040 468 564 |
| 20 ac | 0.080 937 128 |
| 25 ac | 0.101 171 41 |
| 50 ac | 0.202 342 82 |
| 100 ac | 0.404 685 64 |
| 250 ac | 1.011 714 1 |
| 500 ac | 2.023 428 2 |
| 1000 ac | 4.046 856 4 |
Frequently asked
How many acres are in a square kilometer?
One square kilometer equals 247.1053815 acres (km² → ac). That figure is exact, not rounded.
How do you convert square kilometers to acres?
Multiply the number of square kilometers by 247.105381467 to get acres.
What is 1 ac in square kilometers?
One acre is 0.004046856422 square kilometers.
What is 10 km² in ac?
10 km² = 2471.0538 ac.
What exactly is a acre?
Exactly 4840 square yards — historically a day of ploughing.