Online Convert Acres to Square Kilometers (km²)
Instantly convert ac to km2. Accurate, free, and fast.
0.004047
All Conversions
Click row to set as outputFormula
Multiply the value by
0.004047Did you know?
Conversion Table (ac to km2)
| Acres | Square Kilometers (km²) |
|---|---|
| 1 ac | 0.004047 km2 |
| 5 ac | 0.020234 km2 |
| 10 ac | 0.040469 km2 |
| 20 ac | 0.080937 km2 |
| 50 ac | 0.202343 km2 |
| 100 ac | 0.404686 km2 |
| 1000 ac | 4.046863 km2 |
Seamless Acres to Square Kilometers (km²) Conversion
Easily switch formats from Acres to Square Kilometers (km²) with our free online utility.
To convert from Acres to Square Kilometers (km²), follow these steps:
- Enter the amount of Acres in the input box above.
- The tool will automatically calculate the equivalent Square Kilometers (km²).
- Result: 0.00404686 km2 per 1 ac.
Formula:
Multiply the Acres value by 0.00404686
💡 Efficiency Hack: Use keyboard shortcuts to navigate between input fields quickly.
Last Verified: February 2026