Centimeters to Kilometers
One centimeter is 0.00001 kilometers. This cm to km page has the formula, a conversion table, three worked examples and answers to common questions.
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How centimeters convert to kilometers
The unit table behind the converter relates centimeters and kilometers through one ratio, and that ratio works out to 0.00001. In other words, 1 cm = 0.00001 km.
Reading the formula backwards gives cm = km ÷ 0.00001. Dividing by 0.00001 undoes the multiplication, and 1 km equals 100,000 cm.
Centimeters to kilometers reference table
A set of 12 cm amounts is converted to km below, using the same function as the converter at the top of the page.
| Centimeters (cm) | Kilometers (km) |
|---|---|
| 50 | 0.0005 |
| 300 | 0.003 |
| 1,500 | 0.015 |
| 4,000 | 0.04 |
| 15,000 | 0.15 |
| 60,000 | 0.6 |
| 150,000 | 1.5 |
| 400,000 | 4 |
| 1,200,000 | 12 |
| 3,000,000 | 30 |
| 15,000,000 | 150 |
| 50,000,000 | 500 |
Every row comes from the same function as the widget and keeps its rounding, so a figure copied from this table matches what the converter returns for that input.
Examples: turning centimeters into kilometers
Example 1. Start with 3,500,000 cm. Multiply 3,500,000 by 0.00001 and the converter shows 35 km.
Next, 24,000,000 cm: the converter shows 240 km. Because the ratio is fixed, the km figure is 0.00001 times the cm figure.
Finally, convert 0.00015 kilometers to centimeters: dividing by 0.00001 gives 15.
Going from kilometers to centimeters
A dedicated page covers the opposite direction: Kilometers to Centimeters. In that case 1 km = 100,000 cm.
Units outside this pair can be selected in the main Length Converter, which uses the same unit table.
More length converter pairs
Pages for conversions that share a unit with this one, or sit in the same list:
Frequently asked questions
How many kilometers are in one centimeter?
There are 0.00001 kilometers in one centimeter. Ten centimeters come to 0.0001 kilometers, and 100 cm come to 0.001 km.
One kilometer equals how many centimeters?
1 km = 100,000 cm. The reverse ratio is the reciprocal of 0.00001, so 10 km comes to 1,000,000 cm.
What does 7,500,000 cm come to in km?
7,500,000 cm converts to 75 km, using the ratio 0.00001 between the two units.
What precision does the cm to km result use?
Yes, the displayed km value is trimmed. The converter prints at most 10 significant digits at or above 1, at most 8 below 1, and at most 6 decimals from 1,000 up, using exponent notation for extreme sizes. Two samples from this pair: 0.123456789 cm becomes 0.0000012345679 km, and 1,234.5678 cm becomes 0.012345678 km.
How does the widget get from centimeters to kilometers?
Every unit in this converter stores a factor relative to one shared reference unit. The widget multiplies the input by the factor of centimeters, then divides by the factor of kilometers; for this pair that nets out to 0.00001.
Can this converter go from km to cm too?
Yes. The page titled "Kilometers to Centimeters" covers it, or you can press the swap button in the widget above. The arithmetic is km × 100,000, so 25 km is 2,500,000 cm.
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