5 mm to inches
Instant conversion for 5 mm — decimal inches, the nearest 1/64 fraction , and how far off common imperial sizes are, using the same engine as the mm to inches hub.
5mm to inches conversion
- Decimal inches
- 0.1969
- Nearest 1/64
- 13/64 in (+0.159 mm)
- Feet + inches
- 0 ft 0.197 in
The inches fraction result is rounded to the nearest 1/64 fraction.
5 millimeters is equal to 0.1969 inches.
- Decimal inches: 0.1969 in
- Nearest 1/64: 13/64 in (+0.159 mm from the exact size)
How many inches is 5mm?
5 millimeters is equal to 0.1969 inches. That is the exact international conversion ( 1 in = 25.4 mm). On a fractional chart, the nearest 1/64 is 13/64 in.
How to convert 5mm to inches
Formula: inches = millimeters ÷ 25.4 (exact). Or multiply by 0.0393701 for a quick estimate of the same definition.
- Start with 5 mm.
- Divide by 25.4: 5 ÷ 25.4 = 0.1969 in.
- Reverse check: 0.1969 × 25.4 = 5 — the conversion round-trips cleanly.
About the fraction result
The decimal column is exact (shown to four places). The fraction is the nearest 1/64 approximation used on rulers and bit charts — so the two can disagree. Here, 5 mm = 0.1969 in exactly, while 13/64 in differs by +0.159 mm. The converter disclaimer (“rounded to the nearest 1/64 fraction”) exists so that difference is never mistaken for a data error.
Is 5 mm equal to 1/4 inch?
5 mm is not 1/4 inch. A 1/4 in bit is 6.35 mm — about 1.35 mm larger — so substituting changes hole size and fit.
Compared with 1/4 in (6.35 mm): 5 mm is -1.350 mm (metric size is smaller).
This page is for specification checks — drill bits, sockets, tubing, and stock — not body measurements. For shop picks across many metric diameters, see the drill bit & socket mm to inches chart.
5mm to inches conversion chart
Local density around 5 mm (±1 mm, every 0.1 mm). For the full 0–100 mm table, use the mm to inches hub chart.
| mm | inches (decimal) | inches (nearest 1/64) |
|---|---|---|
| 4 | 0.1575 | 5/32 |
| 4.1 | 0.1614 | 5/32 |
| 4.2 | 0.1654 | 11/64 |
| 4.3 | 0.1693 | 11/64 |
| 4.4 | 0.1732 | 11/64 |
| 4.5 | 0.1772 | 11/64 |
| 4.6 | 0.1811 | 3/16 |
| 4.7 | 0.1850 | 3/16 |
| 4.8 | 0.1890 | 3/16 |
| 4.9 | 0.1929 | 3/16 |
| 5 | 0.1969 | 13/64 |
| 5.1 | 0.2008 | 13/64 |
| 5.2 | 0.2047 | 13/64 |
| 5.3 | 0.2087 | 13/64 |
| 5.4 | 0.2126 | 7/32 |
| 5.5 | 0.2165 | 7/32 |
| 5.6 | 0.2205 | 7/32 |
| 5.7 | 0.2244 | 7/32 |
| 5.8 | 0.2283 | 15/64 |
| 5.9 | 0.2323 | 15/64 |
| 6 | 0.2362 | 15/64 |
FAQ
Is 5 mm equal to 1/4 of an inch?
No. 5 mm = 0.1969 in, while 1/4 in = 6.35 mm — a difference of 1.35 mm.
How many inches is 5 mm?
5 millimeters is equal to 0.1969 inches. The nearest 1/64 fraction is 13/64 in.
Can I use a 1/4 inch drill bit instead of 5 mm?
Only for non-critical clearance. A 1/4 in bit is about 1.35 mm larger than 5 mm, which enlarges the hole and loosens fits. Use a true 5 mm bit when the drawing calls for metric.