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Convert kilometers to centimeters

Convert kilometers (km) to centimeters (cm). 1 km = 100,000 cm, and 1 cm = 0.00001 km.

1 km = 100,000 cm

KM to CM formula

cm = km × 100,000

Multiply the number of kilometers by 100,000.

Example: To convert 1 km to centimeters: 1 × 100,000 = 100,000 cm.

Quick answers

What is 1 km in centimeters?
1 km = 100,000 cm
What is 5 km in centimeters?
5 km = 500,000 cm
What is 10 km in centimeters?
10 km = 1,000,000 cm
What is 21.0975 km in centimeters?
21.0975 km = 2,109,750 cm
What is 42.195 km in centimeters?
42.195 km = 4,219,500 cm

KM to CM conversion table

CM to KM table
kilometers (km)centimeters (cm)
1 km100,000 cm
2 km200,000 cm
3 km300,000 cm
5 km500,000 cm
10 km1,000,000 cm
15 km1,500,000 cm
20 km2,000,000 cm
21.0975 km2,109,750 cm
25 km2,500,000 cm
42.195 km4,219,500 cm
50 km5,000,000 cm
100 km10,000,000 cm
150 km15,000,000 cm
200 km20,000,000 cm
250 km25,000,000 cm
500 km50,000,000 cm
1,000 km100,000,000 cm

Frequently asked questions

How many centimeters are in a kilometer?

There are 100,000 centimeters in a kilometer (1 km = 100,000 cm).

How do I convert kilometers to centimeters?

Multiply the number of kilometers by 100,000. To convert 1 km to centimeters: 1 × 100,000 = 100,000 cm.

Is the KM to CM conversion exact?

Yes. Both units are defined exactly, so 1 kilometer is exactly 100,000 centimeters. Results on this page are rounded to six significant digits; pick more decimals in the converter if you need them.

What is 1 km in centimeters?

1 km = 100,000 cm.

How do I convert centimeters back to kilometers?

Use the reverse relationship: 1 cm = 0.00001 km. The CM to KM page has a converter and a full table.

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