Length Conversion Worksheet
Practice converting between different units of length including millimeters, centimeters, meters, and kilometers.
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Length Conversion Practice
Name:
Date:
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Read each question carefully and convert the given lengths to the specified units. Show your work where applicable.
1. 1 centimeter (cm) = millimeters (mm).
2. 1 meter (m) = centimeters (cm).
3. 1 kilometer (km) = meters (m).
4. To convert meters to centimeters, you need to by 100.
5. Which is the longest length?
100 mm
10 cm
1 m
0.1 km
6. How many centimeters are in 3.5 meters?
35 cm
350 cm
3500 cm
0.035 cm
7. Convert 500 millimeters to centimeters.
8. A road is 2.5 kilometers long. How many meters is that?
9. Sarah measures her pencil to be 180 mm long. What is its length in centimeters?
10. Look at the ruler below. What is the length of the shaded bar in centimeters and millimeters?

Length in cm:
Length in mm:
11. 2000 meters is equal to 2 kilometers.
True
False
12. 50 centimeters is longer than 500 millimeters.
True
False