Measurements and Conversions

Length, Distance

Look down the left hand column to find the units you are converting from , and then work across the table to your right to find the units that you are converting to .
x means multiply by the conversion factor.

/ means divide by the conversion factor.
To: From: mm cm m in ft yd
mm / 10 / 1000 / 25.4 / 304.8 / 914.4
cm x 10 / 100 / 2.54 / 30.48 / 91.44
m x 1000 x 100 x 39.3701 x 3.28084 x 1.09361
in x 25.4 x 2.54 / 39.3701 / 12 / 36
ft x 304.8 x 30.48 / 3.28084 x 12 / 3
yd x 914.4 x 91.44 / 1.09361 x 36 x 3

To: From: km miles NM
km / 1.60934 / 1.852
miles x 1.60934 / 1.15078
NM x 1.852 x 1.15078

 

In the tables below the lenghts and distances are the most commonly found in every day use . The tables will help you to convert them.

Inches to Centimeters and Millimeters

in cm mm
1 2.5 25.4
2 5.1 50.8
3 7.6 76.2
4 10.2 101.6
5 12.7 127.0
6 15.2 152.4
7 17.8 177.8
8 20.3 203.2
9 22.9 228.6
10 25.4 254.0
11 27.9 279.4
12 30.5 304.8
14 35.6 355.6
16 40.6 406.4
18 45.7 457.2
20 50.8 508.0
22 55.9 558.8
24 61.0 609.6

Feet to Meters

ft m
1 0.30
2 0.61
3 0.91
4 1.22
5 1.52
6 1.83
7 2.13
8 2.44
9 2.74
10 3.05