MetricMate

3 inches to mm

3 inches = 76.2 millimeters

inches → millimeters

Result: —

How to convert

How to convert inches to millimeters: Multiply inches by 25.4

Reference values nearby

Input Result
-2 -50.8
-1 -25.4
0 0
1 25.4
2 50.8
3 76.2
4 101.6
5 127
6 152.4
7 177.8
8 203.2

Frequently asked questions

Is 3 inches the same as 76.2 mm for a phone screen size?
No, phone screens are measured diagonally. A 3-inch measurement would refer to a straight line, while a phone with a 3-inch screen has a diagonal display of about 76.2mm. These measure different things, so don't confuse linear measurements with screen diagonal measurements.
I need to order a 3-inch bolt online from a European supplier. What size should I specify in millimeters?
Specify 76.2 mm for a standard 3-inch bolt. However, it's worth noting that metric bolt sizes don't always have exact imperial equivalents, so verify with your supplier that 76.2 mm is the closest available size or if they stock true 3-inch bolts despite their metric catalog.