Calculator
Barrel and plate size converter
Enter a barrel or plate size in millimetres or inches. The calculator converts it to one decimal place and shows the nearest of the common wand sizes.
In short
1 inch = 25.4 mm. Divide millimetres by 25.4 for inches, multiply inches by 25.4 for millimetres. The common wand sizes are 13, 19, 25, 32 and 38 mm, sold in the US as ½, ¾, 1, 1¼ and 1½ in.
Convert
mm and inches
13 mm½ in
19 mm¾ in
25 mm1 in
32 mm1¼ in
38 mm1½ in
Nearest common size: 25 mm (1 in)
Common barrel sizes
| Millimetres | Inches | Exact inches |
|---|---|---|
| 13 mm | ½ in | 0.5 |
| 19 mm | ¾ in | 0.7 |
| 25 mm | 1 in | 1.0 |
| 32 mm | 1¼ in | 1.3 |
| 38 mm | 1½ in | 1.5 |