square kilometre to acre
Live square kilometre (km²) to acre (ac) converter. Plus a 10-value reference table and FAQs.
Conversion table
Ten sample values from square kilometre to acre. Use the converter above for arbitrary values.
| square kilometre (km²) | → | acre (ac) |
|---|---|---|
| 0.001 km² | → | 0.247105 ac |
| 0.01 km² | → | 2.471054 ac |
| 0.1 km² | → | 24.710538 ac |
| 0.5 km² | → | 123.552691 ac |
| 1 km² | → | 247.105381 ac |
| 2 km² | → | 494.210763 ac |
| 5 km² | → | 1,235.526907 ac |
| 10 km² | → | 2,471.053815 ac |
| 100 km² | → | 24,710.538147 ac |
| 1,000 km² | → | 247,105.381467 ac |
About the square kilometre
100 hectares or 1,000,000 m². Country/city size.
About the acre
4,047 m². US farmland and lot size.
How square kilometre to acre conversion works
Both units belong to Area. Unitbox first expresses the input in the category reference unit (m²), then expresses that same quantity in acre.
The right unit depends on the convention used by your industry, country, instrument, or source document.
Unit definitions and conversion factors are maintained in the Unitbox methodology. Last reviewed with the current conversion dataset.
Frequently asked questions
Frequently Asked Questions
How do I convert square kilometre to acre?
Multiply the square kilometre value by 247.105381 to get it in acre. For example, 10 km² = 2,471.0538 ac.
What is 1 km² in ac?
1 km² = 247.105381 ac.
What is 100 km² in ac?
100 km² = 24,710.5381 ac.
What is the formula?
Linear: multiply by 247.105381 (the unit factor ratio).
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