Calculator for Metric & SAE Conversions
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Charts and graphs work well for approximating conversions, but what about getting precise calculations? Well, that’s when technology kicks in—we created a set of calculators devoted just to metric & SAE conversions. These online calculators will convert any SAE or metric value to its respective counterpart. Thus, you’ll be able to find the perfect substitute for any wrench size at the tips of your fingers.
As you likely already know, metric to imperial conversions are far from clean. Tools from the metric system use millimeters to represent each size while their imperial counterparts use inches. The formula for that conversion is 1 inch = 25.4 mm.
As you likely already know, the metric & imperial conversions are far from clean. Tools from the metric system use millimeters to while their imperial counterparts use inches. The formula for that conversion is 1 mm = 1⁄25.4 inches, which is approximately 0.039″.
Decimal Values for Popular SAE Wrench Sizes
| Wrench Size | Decimal Value |
| 1/64 | 0.015625 |
| 1/32 | 0.03125 |
| 3/64 | 0.046875 |
| 1/16 | 0.0625 |
| 5/64 | 0.078125 |
| 3/32 | 0.09375 |
| 7/64 | 0.109375 |
| 1/8 | 0.125 |
| 9/64 | 0.140625 |
| 5/32 | 0.15625 |
| 11/64 | 0.171875 |
| 3/16 | 0.1875 |
| 13/64 | 0.203125 |
| 7/32 | 0.21875 |
| 15/64 | 0.234375 |
| 1/4 | 0.25 |
| 5/16 | 0.3125 |
| 11/32 | 0.34375 |
| 3/8 | 0.375 |
| 13/32 | 0.40625 |
| 7/16 | 0.4375 |
| 15/32 | 0.46875 |
| 1/2 | 0.5 |
| 9/16 | 0.5625 |
| 5/8 | 0.625 |
| 11/16 | 0.6875 |
| 3/4 | 0.75 |
| 13/16 | 0.8125 |
| 7/8 | 0.875 |
| 15/16 | 0.9375 |
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