StubCalcStubCalc Bend / Free calculators
90° stub-up calculator
Enter the stub height to the back of the 90. You get the mark from the pipe end with the bender take-up already taken off, plus the developed length of the bend.
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Every bend type, your exact bender, saved jobs and a bend sheet to share. Works offline on the job. StubCalc Bend is in beta now.
How a stub-up is laid out
A stub-up is a single 90 that brings the pipe up to a set height. Measure the stub from the end of the pipe to the back of the finished 90, then subtract the bender's take-up (deduct): the arrow goes on that mark with the hook toward the end.
Typical hand bender take-up: 5" for 1/2" EMT, 6" for 3/4", 8" for 1" and 11" for 1-1/4". Check the number cast on your bender shoe; makers differ.
Example: a 12" stub on 1/2" EMT is marked at 12 − 5 = 7" from the end.
More free calculators
The five free bends from StubCalc Bend, right in your browser.
Check marks against your bender; verify with local code. The calculator uses a generic EMT hand bender. Take-up and multipliers differ between makers, so compare with the numbers on your shoe. Not affiliated with NFPA or any bender maker.