2 inch in decimal and mm
Decimal inches
2 in
Millimetres
50.8 mm
From the standard, the international inch, 25.4 mm exactly
The math
- A fraction is its top number divided by its bottom number: 2 in = 2 in = 2 in.
- An inch is exactly 25.4 mm, so 2 × 25.4 = 50.8 mm, or 50.800 mm to three places.
- In feet, divide by 12: 2 ÷ 12 = 0.166667 ft. In centimetres, divide the mm by 10: 5.08 cm.
Drills, plywood and lumber at 2 in
| Drill | Size | Off by |
|---|---|---|
| 1 in | 1 in | −1 in |
| 25 mm | 0.9843 in | −25.8 mm |
Every drill is on the drill bit size chart.
Bits of this size
Sizes either side
| Fraction | Decimal | mm |
|---|---|---|
| 1-15/16 in | 1.9375 in | 49.213 mm |
| 2-1/4 in | 2.25 in | 57.150 mm |
Every size is on the fraction to decimal chart; any other size goes in the fraction to decimal calculator.