Centimeters to Kilometers Converter (cm to km)
1 centimeter = 0.00001 kilometers. Multiply centimeters by 0.00001 to get kilometers; divide kilometers by 0.00001 to go back.
Centimeters to kilometers conversion table
How to convert centimeters to kilometers
Take the value in centimeters.
100,000 cm
Divide by 100,000.
100,000 ÷ 100,000
Round to the precision you need.
= 1 km
The centimeter and the kilometer are both defined in terms of the metre and the kilogram, so this factor is exact, not an approximation.
Table of Contents
Need to change centimeters (cm) into kilometers (km) quickly? Enter your number and get the result right away. If you want to convert the other way, switch the units and use the same tool.
This converter keeps things simple. It gives a clean answer you can trust, without extra steps.
Perfect for:
- homework and exams
- quick work calculations
- distance checks and planning
- daily measurement needs
If you often convert units, browse our full collection of unit conversion tools.
What Are Centimeters and Kilometers?
What is a Centimeter (cm)?
A centimeter is a metric unit used for small lengths. It is one hundredth of a meter.
Simple meaning:
1 cm = 0.01 m
Centimeters are used for height, clothing measurements, furniture size, and everyday objects. If you want quick related conversions, you can use:
What is a Kilometer (km)?
A kilometer is a metric unit used for longer distances. It equals 1,000 meters.
Simple meaning:
1 km = 1,000 m
Also, 1 km is about 0.6214 miles
Kilometers are common for road distance, travel routes, and the space between places. For nearby distance conversions, these tools help:
- convert kilometers to meters
- convert meters to kilometers
- convert kilometers to miles
- convert miles to kilometers
- convert km to feet
- convert kilometers to yards
How to Convert Centimeters to Kilometers
To convert cm to km, you only need one step: divide by 100,000.
Key conversion
1 km = 100,000 cm
Formula
km = cm ÷ 100,000
Example
If you have 20 cm:
20 ÷ 100,000 = 0.0002 km
This method is reliable and works every time.
How many centimeters are in 1 kilometer?
1 kilometer = 100,000 centimeters
So: 1 km = 100,000 cm
How many kilometers are in 1 centimeter?
1 centimeter = 0.00001 kilometers
So: 1 cm = 0.00001 km
Example: Convert 8 cm to km
To convert 8 cm to km, divide by 100,000:
8 ÷ 100,000 = 0.00008 km
Simple rule to remember: cm to km means divide by 100,000.
If you also need the reverse conversion, use this quick tool: kilometers to centimeters. For very small-length conversions, this can also help: nanometers to centimeters.
What is a centimeter?
A centimeter is a unit of length in the metric system, equal to one-hundredth of a meter or 0.01 meters.
What is a kilometer?
A kilometer is a unit of length in the metric system equal to 1,000 meters or approximately 0.621 miles
Common centimeters to kilometers conversions
These are the values people actually search for. Any other number works in the converter above; only these pages are listed for search engines.
Frequently asked questions
What is 1cm to 1 km?
Both centimeters (cm) and kilometers (km) measure length in the metric system.
Since 1 km = 100,000 cm, you convert cm to km by dividing by 100,000.
So, 1 cm ÷ 100,000 = 0.00001 km.
How do you convert centimeters to kilometers?
To convert centimeters (cm) to kilometers (km), divide your cm value by 100,000. That’s because 1 km equals 100,000 cm.
Formula: km = cm ÷ 100,000
Example: 250,000 cm ÷ 100,000 = 2.5 km
How many kilometers are in 1000 cm?
1000 cm equals 0.01 km. Because 1 km = 100,000 cm, you convert cm to km by dividing by 100,000: 1000 ÷ 100,000 = 0.01 km