16 mm to Inches
16 mm ≈ 0.6299 in
16 millimeters is approximately 0.6299 inches.
How to convert 16 mm to in
Use the formula in = mm ÷ 25.4:
in = 16 ÷ 25.4in = 0.629921
So 16 mm = 0.629921 in, or about 0.6299 in rounded.
Rounded values and quick estimate
- Rounded to a whole number: 1 in
- Rounded to one decimal place: 0.6 in
- Conversion factor: 1 millimeter = 0.0394 inches
Quick mental estimate: divide by 25. For 16 mm that gives about 0.64 in — off by 0.0101 in (1.6%). Use the exact formula when precision matters.
16 mm in other units
16 mm is 0.630 inches, almost exactly 5/8″ (0.625″ = 15.875 mm). It is also the name of the classic 16 mm film format and a common size for conduit and drill bits.
- Inches
- 0.6299 in
- Centimeters
- 1.6 cm
- Meters
- 0.016 m
- Kilometers
- 0.000016 km
- Feet
- 0.0525 ft
- Yards
- 0.0175 yd
- Miles
- 0.00001 mi
- Micrometers
- 16000 µm
- Hands
- 0.1575 hh
- Nautical miles
- 0.000009 nmi
- Mils (thou)
- 629.92 mil
16 mm and nearby values
About millimeters and inches
A millimeter is one thousandth of a meter (0.1 cm). It is used for small, precise measurements like rainfall, screws and paper thickness.
An inch is defined as exactly 2.54 centimeters. There are 12 inches in a foot; inches are used in the US for screens, heights and small lengths.
Related conversions
Frequently asked questions
What is 16 mm in Inches?
16 millimeters is about 0.6299 inches (16 mm ≈ 0.6299 in).
How do you convert 16 mm to in?
Apply in = mm ÷ 25.4: in = 16 ÷ 25.4, in = 0.629921.
How many millimeters is 0.6299 in?
0.6299 in is about 16 millimeters.
Is 16 mm the same as 5/8 inch?
They differ by only 0.125 mm, so for most practical purposes yes — though precision fittings should still use the correct system.