Kilometers to Centimeters
One kilometer is 100,000 centimeters. This km to cm page has the formula, a conversion table, three worked examples and answers to common questions.
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How kilometers convert to centimeters
This page converts kilometers (km) to centimeters (cm). In the converter's unit table, one kilometer equals 100,000 centimeters, so every result here comes from a single multiplication by 100,000.
Reading the formula backwards gives km = cm ÷ 100,000. Dividing by 100,000 undoes the multiplication, and 1 cm equals 0.00001 km.
Kilometers to centimeters reference table
Here are 12 values converted from kilometers to centimeters. Each row is the left-hand number multiplied by 100,000.
| Kilometers (km) | Centimeters (cm) |
|---|---|
| 0.001 | 100 |
| 0.005 | 500 |
| 0.01 | 1,000 |
| 0.025 | 2,500 |
| 0.05 | 5,000 |
| 0.1 | 10,000 |
| 0.25 | 25,000 |
| 0.5 | 50,000 |
| 1 | 100,000 |
| 2 | 200,000 |
| 5 | 500,000 |
| 10 | 1,000,000 |
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 kilometers into centimeters
Convert 0.00075 km first. Using 100,000 as the multiplier, the answer displayed is 75 cm.
A second amount, 0.0065 kilometers, becomes 650 centimeters. Converting that result in the opposite direction recovers about 0.0065 km.
Working backwards, an amount of 5,500,000 cm corresponds to 55 km.
Going from centimeters to kilometers
A dedicated page covers the opposite direction: Centimeters to Kilometers. In that case 1 cm = 0.00001 km.
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 centimeters are in one kilometer?
There are 100,000 centimeters in one kilometer. Ten kilometers come to 1,000,000 centimeters, and 100 km come to 10,000,000 cm.
One centimeter equals how many kilometers?
1 cm = 0.00001 km. The reverse ratio is the reciprocal of 100,000, so 10 cm comes to 0.0001 km.
What does 0.00035 km come to in cm?
0.00035 km converts to 35 cm, using the ratio 100,000 between the two units.
What precision does the km to cm result use?
Yes, the displayed cm 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 km becomes 12,345.6789 cm, and 1,234.5678 km becomes 123,456,780 cm.
How does the widget get from kilometers to centimeters?
Every unit in this converter stores a factor relative to one shared reference unit. The widget multiplies the input by the factor of kilometers, then divides by the factor of centimeters; for this pair that nets out to 100,000.
Can this converter go from cm to km too?
Yes. The page titled "Centimeters to Kilometers" covers it, or you can press the swap button in the widget above. The arithmetic is cm × 0.00001, so 25 cm is 0.00025 km.
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