Convert 20 km2 to mi2
20 square kilometers = 7.722043 square miles
How to convert square kilometers to square miles
- Formula:
square miles = square kilometers × 0.38610216 - Put in the value: 20 square kilometers.
- Result: 7.722043 square miles.
Square kilometers to square miles table
| square kilometers | square miles |
|---|---|
| 1 km2 | 0.38610216 mi2 |
| 2 km2 | 0.77220432 mi2 |
| 5 km2 | 1.930511 mi2 |
| 10 km2 | 3.861022 mi2 |
| 20 km2 | 7.722043 mi2 |
| 50 km2 | 19.305108 mi2 |
| 100 km2 | 38.610216 mi2 |
| 500 km2 | 193.051079 mi2 |
| 1,000 km2 | 386.102159 mi2 |
Converting the other way: square miles to square kilometers
square kilometers = square miles × 2.589988. So 7.722043 square miles is back to 20 square kilometers; one square mile is 2.589988 square kilometers. See the square miles to square kilometers table.
Quick estimate in your head
For a rough answer, multiply by about 0.4: 20 × 0.4 ≈ 8 mi2, against the exact 7.722043 mi2 (3.6% out). Good enough to check that a calculated result is sensible.
Common mistakes
The usual slip is using the factor the wrong way round. A square kilometer is smaller than a square mile, so the number of square miles must come out smaller than the number of square kilometers. If your answer goes the other way, divide instead of multiplying.
About the units
Square kilometer (km2) and square mile (mi2) are both units of area. One square kilometer equals 0.38610216 square miles, and one square mile equals 2.589988 square kilometers. Results on this page are rounded for display; the conversion itself uses the exact definitions.
Area conversions come up when buying flooring, paint or turf, comparing house and flat sizes, and measuring land and gardens.
20 square kilometers in other units
The most readable unit for this amount is square miles (7.722043).
How this answer was calculated
The result is worked out from the numbers in this page's address when the page is opened, using exact arithmetic wherever possible and rounding only for display. Nothing is copied from a printed table. If you think an answer is wrong, please tell us through the contact page and we will check it.
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Questions
How many square miles are in 20 square kilometers?
7.722043 square miles.
What is the formula to convert square kilometers to square miles?
square miles = square kilometers × 0.38610216
How many square miles are in one square kilometer?
One square kilometer is 0.38610216 square miles, so multiply any number of square kilometers by 0.38610216.
Is 20 km2 more than 20 mi2?
No. 20 square kilometers is 7.722043 square miles, which is less than 20 square miles.
How do I convert square kilometers to square miles in a spreadsheet?
Put the number of square kilometers in A1 and type =A1*0.38610216 in the next cell. Fill the formula down to convert a whole column.