Unit Converter
Conversion formula
The conversion factor from centimeters to millimeters is 10, which means that 1 centimeter is equal to 10 millimeters:
1 cm = 10 mm
To convert 30 centimeters into millimeters we have to multiply 30 by the conversion factor in order to get the length amount from centimeters to millimeters. We can also form a simple proportion to calculate the result:
1 cm → 10 mm
30 cm → L(mm)
Solve the above proportion to obtain the length L in millimeters:
L(mm) = 30 cm × 10 mm
L(mm) = 300 mm
The final result is:
30 cm → 300 mm
We conclude that 30 centimeters is equivalent to 300 millimeters:
30 centimeters = 300 millimeters
Alternative conversion
We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 0.0033333333333333 × 30 centimeters.
Another way is saying that 30 centimeters is equal to 1 ÷ 0.0033333333333333 millimeters.
Approximate result
For practical purposes we can round our final result to an approximate numerical value. We can say that thirty centimeters is approximately three hundred millimeters:
30 cm ≅ 300 mm
An alternative is also that one millimeter is approximately zero point zero zero three times thirty centimeters.
Conversion table
centimeters to millimeters chart
For quick reference purposes, below is the conversion table you can use to convert from centimeters to millimeters
centimeters (cm) | millimeters (mm) |
---|---|
31 centimeters | 310 millimeters |
32 centimeters | 320 millimeters |
33 centimeters | 330 millimeters |
34 centimeters | 340 millimeters |
35 centimeters | 350 millimeters |
36 centimeters | 360 millimeters |
37 centimeters | 370 millimeters |
38 centimeters | 380 millimeters |
39 centimeters | 390 millimeters |
40 centimeters | 400 millimeters |