ConvBolt — Unit ConverterKilometers to Centimeters Converter
Converting kilometers to centimeters is a multiplication by a fixed factor: 1 km = 100000 cm. The table below covers the values people look up most often, and the formula section shows exactly where that factor comes from.
Because one kilometer works out to 100000 cm, the centimeter is the much larger unit of the two: a figure given in centimeter always carries a larger number than the same measurement in kilometer. A chart drawn in km can hide that, so check which label the axis uses before you compare two readings.
Technical documentation is the other common source — a datasheet drawn up in kilometers often has to be re-expressed in centimeters for a supplier or a regulator who works in the other system.
The conversion factor used here is 100000 cm per kilometer (0 significant digits as shown). Kept to seven figures it covers professional measurement; if you round it to two or three decimals for a spreadsheet, the error scales with the input — at a value of 1,000 km a factor rounded to three decimals can be off by a measurable amount. The reverse direction uses 1.0000e-5 km per cm, the exact reciprocal, so a round trip through both pages returns your original number.
Kilometers to Centimeters formula
Use this formula to convert any kilometer value to centimeters:
Worked example: 100 km × 100000 = 1.0000e+7 cm.
Kilometers to Centimeters conversion table
| Kilometers (km) | Centimeters (cm) |
|---|---|
| 0.5 km | 50000 cm |
| 1 km | 100000 cm |
| 2 km | 200000 cm |
| 5 km | 500000 cm |
| 10 km | 1000000 cm |
| 20 km | 2000000 cm |
| 50 km | 5000000 cm |
| 100 km | 1.0000e+7 cm |
| 500 km | 5.0000e+7 cm |
| 1000 km | 1.0000e+8 cm |
How to convert kilometers to centimeters
Multiply the kilometer value by 100000 to get the equivalent in centimeters. This single factor works for every value in the table above and for anything else you need — there is no per-value adjustment, which is why a conversion table and a calculator always agree.
If you need the opposite direction, use the Centimeters to Kilometers converter instead of dividing by hand; both pages use the same source factors. For every other km conversion in one place, see the km conversion hub.
Frequently asked questions
How many centimeters are in 1 kilometer?
1 kilometer = 100000 cm.
What is 100 kilometers in centimeters?
100 km = 1.0000e+7 cm.
Is converting kilometers to centimeters the same as centimeters to kilometers?
No — the direction changes the multiplier. The reverse conversion (1 cm = 1.0000e-5 km) is on the Centimeters to Kilometers page.
Related conversions
Try the ConvBolt Unit Converter for any other length unit, browse the Length conversions, or read our conversion guides.