# #63 drill size

A #63 drill is 0.0370 in (0.94 mm). It sits between #64 and #62 in the number series; the nearest metric drill is 0.95 mm.

## #63 drill data

- Series: Number drill
- Decimal: 0.0370 in
- Metric: 0.94 mm (0.9398 mm exact)
- Nearest metric drill: 0.95 mm (+0.010 mm)
- Nearest fractional: 1/32" (0.0312 in)

## Nearest metric drills

| Metric drill | Inch | Difference |
|---|---|---|
| 0.9 mm | 0.0354 | −0.040 mm |
| 0.95 mm | 0.0374 | +0.010 mm |

## Nearby inch drills

| Drill | Series | Inch | mm |
|---|---|---|---|
| 1/32" | Fractional | 0.0312 | 0.79 |
| #64 | Number | 0.0360 | 0.91 |
| #63 | Number | 0.0370 | 0.94 |
| #62 | Number | 0.0380 | 0.97 |
| 3/64" | Fractional | 0.0469 | 1.19 |
| Letter A | Letter | 0.2340 | 5.94 |


## FAQ

**What size is a #63 drill?**
A #63 drill is 0.0370 in, which is 0.94 mm (0.9398 mm exactly).

**What is the metric equivalent of a #63 drill?**
The nearest metric drill is 0.95 mm, 0.010 mm larger. The other close size is 0.9 mm.

**Which fractional drill is closest to #63?**
1/32 in (0.0312 in) is the closest, 0.0057 in smaller.

Source page: https://machinistcharts.com/drill-size/number-63/
Updated: 2026-10-06
Publisher: MachinistCharts (https://machinistcharts.com)