AREA CONVERSION
Square kilometer to Acre.
Convert square kilometer (km²) to acre (ac), with the math explained.
1 km² = 247.1053815 ac
THE MATH, MADE SIMPLE
How to convert square kilometer to acre
Multiply your square kilometer value by 247.105381467 to get the equivalent in acre. Both units are normalized through the square meter.
ac = km² × 247.105381510 km² = 2,471.05381467 ac
Result rounded to 12 significant digits. Change the precision in the calculator to suit your task.QUICK REFERENCE
km² to ac conversion table
| Square kilometer (km²) | Acre (ac) |
|---|---|
| 1 km² | 247.105381467 ac |
| 2 km² | 494.210762934 ac |
| 5 km² | 1,235.52690734 ac |
| 10 km² | 2,471.05381467 ac |
| 20 km² | 4,942.10762934 ac |
| 50 km² | 12,355.2690734 ac |
| 100 km² | 24,710.5381467 ac |
| 500 km² | 123,552.690734 ac |
| 1,000 km² | 247,105.381467 ac |
About the square kilometer
The square kilometer (km²) is a unit of area. One square kilometer equals 1,000,000 square meter (base unit) in this calculator.
All square kilometer conversionsAbout the acre
The acre (ac) is a unit of area. One acre equals 4,046.8564224 square meter (base unit) in this calculator.
All acre conversionsCommon questions
What is 1 km² in ac?
One square kilometer equals 247.105381467 ac. Use the formula above for other values.
Why might another calculator show a different last digit?
Calculators may round at different stages or use different unit conventions. We keep full JavaScript numeric precision during calculation and round only for display. Choose up to 15 significant digits. Check US versus UK units and the notes for this category.
BROWSE BY UNIT