Point your camera at any bolt or nut. Get the exact socket size in seconds — metric and SAE. No app download. Works right in your browser.
SocketSnap uses your camera to measure bolts and nuts in real-time. No images are stored or transmitted.
| Metric | SAE | Bolt | Common Use |
|---|
| SAE | Metric (mm) | Diff | Interchangeable? |
|---|---|---|---|
| 1/4" | 6.35 | — | Close to 6mm |
| 5/16" | 7.94 | — | Close to 8mm |
| 3/8" | 9.53 | 0.47 | Close to 10mm |
| 7/16" | 11.11 | — | Close to 11mm |
| 1/2" | 12.70 | 0.30 | ≈ 13mm ✓ |
| 9/16" | 14.29 | — | Close to 14mm |
| 5/8" | 15.88 | — | Close to 16mm |
| 11/16" | 17.46 | — | Close to 17mm |
| 3/4" | 19.05 | 0.05 | ≈ 19mm ✓ |
| 13/16" | 20.64 | — | Close to 21mm |
| 7/8" | 22.23 | — | Close to 22mm |
| 15/16" | 23.81 | — | Close to 24mm |
| 1" | 25.40 | 0.40 | Close to 25mm |
| Bolt Size | Torque (ft-lbs) | Torque (Nm) |
|---|---|---|
| 1/4"-20 | 8 | 11 |
| 5/16"-18 | 17 | 23 |
| 3/8"-16 | 31 | 42 |
| 7/16"-14 | 49 | 66 |
| 1/2"-13 | 75 | 102 |
| 9/16"-12 | 110 | 149 |
| 5/8"-11 | 150 | 203 |
| 3/4"-10 | 270 | 366 |
| M6×1.0 | 7 | 9.5 |
| M8×1.25 | 17 | 23 |
| M10×1.5 | 33 | 45 |
| M12×1.75 | 58 | 79 |
| Drive Size | Socket Range | Best For |
|---|---|---|
| 1/4" drive | 4mm–14mm | Small fasteners, electronics, trim |
| 3/8" drive | 8mm–22mm | Most automotive, general purpose |
| 1/2" drive | 10mm–36mm | Suspension, lug nuts, heavy work |
| 3/4" drive | 19mm–80mm | Heavy equipment, industrial |