How OD sizing works
Class ladder, materials, and when to go larger.
Manual pipe cutter OD screen
Pipe cutter size by OD
Enter measured pipe outer diameter in inches. Get the smallest 1.125 / 2 / 2.5 in manual class — or NO_MATCH. Confirm material fit; cut only depressurized pipe.
Manual pipe cutter OD screen
Result
Match the smallest class whose max OD covers your pipe. Classes: 1.125 · 2 · 2.5 in. Above 2.5 → NO_MATCH.
From measurement to decision
Open the full calculator
Same tool with room for examples.
1.125 vs 2 vs 2.5 in
When each class fits — and when none do.
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