5 mm to Inches
Answer
0.19685 in
5 mm = 0.19685 in ≈ 13/64 in
5 millimeters equals 0.19685 inches, just under 3/16 inch (0.1875 in). It is a familiar size in electronics and lighting: the classic 5mm LED dome and M5 machine screws both use this diameter, and 5 mm plywood is a common thin panel thickness in cabinetry and RC hobby builds. Anyone reading a 5 mm mark on a caliper is looking at a value that rounds to 13/64 in at 1/64 inch precision.
Try another mm value
Decimal inches
0.19685"
Nearest 1/64
13/64"
Centimeters
0.5 cm
Related values
| Value | Result |
|---|---|
| Decimal inches | 0.19685 in |
| Nearest 1/16 in | 3/16 in |
| Nearest 1/32 in | 3/16 in |
| Nearest 1/64 in | 13/64 in |
| Centimeters | 0.5 cm |
How the conversion works
- Divide by 25.4. One inch equals exactly 25.4 mm, so dividing the millimeter value by that number gives inches directly. For 5 mm: 5 ÷ 25.4 = 0.19685 inches, the reading a caliper shows when switched from metric to imperial mode.
- Round to a fraction. Multiply 0.19685 by 64 to get 12.598, then round to the nearest whole number, 13. That makes the raw fraction 13/64, before checking whether it can be simplified.
- Simplify and read the answer. Since 13 and 64 share no common factor besides 1, the fraction stays as 13/64 in. At 1/16 inch precision, 5 mm rounds instead to the coarser 3/16 in.
Frequently Asked Questions
5 mm equals 0.19685 inches. At 1/16 in precision that rounds to 3/16 in, and at the finer 1/64 in precision it comes out to 13/64 in, only 0.00065 in off from the exact decimal.
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