Snap a photo of any bolt.
Get the socket size.

Put any coin next to the bolt or nut and take a photo. SocketSnap reads the size off the picture and suggests the socket — metric & SAE — plus the drive size. Torque reference charts are included.

SAE + Metric

Both systems

Auto-detect

Coin for scale

Offline

After first load

No signup. No app download. The photo never leaves your device — all measurement runs locally in your browser. Results are estimates from a photo; double-check the confidence reading and test-fit before buying tools.

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1. Coin next to the bolt

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2. Snap the photo

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3. Get your socket size

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SocketSnap uses your camera to measure bolts and nuts. Nothing is uploaded — the image stays on your device.

1× 5×

📋 History

Your saved measurements — tap Share to text a part to anyone.

🔩 Bolt & Socket Database

Common fasteners, what they fit, and where you'll find them.

Metric	SAE	Bolt	Common Use

📏 Quick Reference

Reference charts — works offline.