Convert Square kilometres to Square centimetres
1 square kilometre is 10,000,000,000 cm². One square kilometre is exactly 10000000000 square centimetres.
One square kilometre is 10000000000 square centimetres. To convert square kilometres to square centimetres, multiply by 10000000000; to go the other way, divide by 10000000000 or multiply by 1.0000 × 10^-10. The factor is exact rather than rounded: it follows from NIST Office of Weights and Measures. A million square metres, or 100 hectares.
Factor checked against the defining standard · How we check
- Square kilometres × 10000000000
1 * 1000000000010,000,000,000 cm²
1 square kilometre in every area unit
| Unit | Value | Exact factor |
|---|---|---|
| square inches | 1,550,003,100 sq in | × 1,550,003,100.01 |
| square feet | 10,763,910.42 sq ft | × 10,763,910.4167 |
| square yards | 1,195,990.046 sq yd | × 1,195,990.0463 |
| acres | 247.1053815 ac | × 247.105381467 |
| square meters | 1,000,000 m² | × 1,000,000 |
| square millimetres | 1,000,000,000,000 mm² | × 1,000,000,000,000 |
| square centimetres | 10,000,000,000 cm² | × 10,000,000,000 |
| square kilometres (as entered) | 1 km² | — |
| square miles | 0.3861021585 mi² | × 0.386102158542 |
| hectares | 100 ha | × 100 |
Factors are entered by hand from NIST Office of Weights and Measures rather than derived from a units library, so the ones that terminate are exact rather than rounded.
The same converter answers this pair however it is written: sqkm to sqcm is how the symbols are typed on a keyboard with no superscript on it.
How do you convert square kilometres to square centimetres? The converter and the working
- 1.Take the measurement in square kilometres.
- 2.Multiply by 10000000000 — that is how many square centimetres fit in one square kilometre.
- 3.To go back the other way, divide by 10000000000, or multiply by 1.0000 × 10^-10.
Worked example: 25 square kilometres to square centimetres
- Formula
- km² × 10000000000 = cm²
- Arithmetic
- 25 × 10000000000 = 250,000,000,000 cm²
- Answer
- 25 km² = 250,000,000,000 cm²
The factor is exact, so this figure is exact too — only the display is rounded.
Square kilometres to square centimetres conversion table
| Square kilometres | Square centimetres |
|---|---|
| 1 km² | 10,000,000,000 cm² |
| 2 km² | 20,000,000,000 cm² |
| 3 km² | 30,000,000,000 cm² |
| 4 km² | 40,000,000,000 cm² |
| 5 km² | 50,000,000,000 cm² |
| 6 km² | 60,000,000,000 cm² |
| 7 km² | 70,000,000,000 cm² |
| 8 km² | 80,000,000,000 cm² |
| 9 km² | 90,000,000,000 cm² |
| 10 km² | 100,000,000,000 cm² |
| 12 km² | 120,000,000,000 cm² |
| 15 km² | 150,000,000,000 cm² |
| 20 km² | 200,000,000,000 cm² |
| 25 km² | 250,000,000,000 cm² |
| 50 km² | 500,000,000,000 cm² |
| 100 km² | 1,000,000,000,000 cm² |
| 200 km² | 2,000,000,000,000 cm² |
| 300 km² | 3,000,000,000,000 cm² |
| 500 km² | 5,000,000,000,000 cm² |
| 1000 km² | 10,000,000,000,000 cm² |
| 2000 km² | 20,000,000,000,000 cm² |
| 5000 km² | 50,000,000,000,000 cm² |
| 10000 km² | 100,000,000,000,000 cm² |
What is a square kilometre?
A million square metres, or 100 hectares. The unit land area and population density are published in everywhere except the US.
What is a square centimetre?
A ten-thousandth of a square metre — not a hundredth, which is the mistake squaring a prefix invites. 10,000 cm² to the square metre.
How many square centimetres are in a square kilometre?
One square kilometre is 10000000000 square centimetres, exactly. Going the other way, one square centimetre is 1.0000 × 10^-10 square kilometres. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every area unit here
The whole group — 10 units with their symbols and the size of each one in square meters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a square kilometre.
Cite this page
- APA
- Rule Calculator. (2026). Convert Square kilometres to square centimetres. Rule Calculator. https://rulecalculators.com/convert/square-kilometer-to-square-centimeter
- MLA
- "Convert Square kilometres to square centimetres." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/square-kilometer-to-square-centimeter.
- Chicago
- Rule Calculator. "Convert Square kilometres to square centimetres." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/square-kilometer-to-square-centimeter.
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Questions people actually ask
- How many square centimetres are in a square kilometre?
- 10000000000. A ten-thousandth of a square metre — not a hundredth, which is the mistake squaring a prefix invites. 10,000 cm² to the square metre.
- How do I convert square centimetres back to square kilometres?
- Divide by 10000000000, or multiply by 1.0000 × 10^-10 — they are the same operation.
Other area conversions
Square centimetres to square kilometres — the same conversion the other way.