Calculator

Angle grinder size by disc

Enter needed disc diameter (inches). Get a 4.5 / 5 / 7 in class or NO_MATCH. Confirm live RPM and guard before you buy.

Result

Enter values to begin.

Worked checks: 4 → 4.5 · 4.75 → 5 · 6 → 7 · 8 → NO_MATCH. classLbs uses inches×10 (45 / 50 / 70).

Guides

Ladder limits and when to use a larger grinder.