StubCalc Bend
iPhone and Android
Conduit bending, mark by mark.
Offsets, saddles, 90s and kicks. Get every mark measured from the pipe end, which bender mark to line up, which way the hook faces and which bend goes first.
Results you can bend from
Most calculators stop at "distance between bends". StubCalc Bend goes all the way to the pipe.
Marks from the end
Every mark is measured from the pipe end and named by the bender symbol: arrow, star, notch or rim.
Hook and order
Which way the hook faces, when to roll the pipe and which bend comes first, as numbered steps.
Your bender
Pick the maker, model and size, or calibrate your own bender from one test 90.
Three methods, shown
Bender chart, exact trig or radius-aware. You see which one is used and how far the others differ.
Tape-measure keypad
Type feet, inches and sixteenths the way you read them, or work in millimetres.
Feasibility check
If a bend can't be done, you get the reason and the nearest value that works.
Example: 10" offset at 30°
Obstruction 48" from the end of the pipe, 1/2" EMT hand bender, bender chart method.
Free core, Pro once
No subscription, no account, no ads. Pro is one purchase that also restores on your other phones.
Free $0
- 90 stub-up, offset, box offset, 3-point saddle, back-to-back 90
- Reference tables: multipliers, shrink, deduct and gain
- Generic EMT hand bender with your own deduct
- Full result: marks, steps, diagram and the math
- Last 5 runs, share a bend sheet as an image
Pro $9.99 once
- 4-point saddle, kick, kick-90, rolling offset with roll angle
- Parallel offsets and kicks, matching offsets and kicks
- Segmented and concentric 90s, multi-bend stick from one end
- All maker and model bender profiles, custom and calibrated benders
- Named saved jobs
Questions
Is Pro a subscription?
No. Pro is a one-time purchase of $9.99 (US price; other countries see their local price). You pay once and keep it.
How do I restore Pro on a new phone?
Sign in to the same Apple ID or Google account you bought with, open StubCalc Bend, go to Settings and tap "Restore purchases". On iPhone, Family Sharing also works.
Does it work without signal?
Yes. All calculations run on the phone. A connection is only needed to buy or restore Pro.
My bender is not in the list.
Use the generic bender and enter your own deduct, or calibrate from one test 90. Email us the maker, model and size and we'll look at adding it.
The result looks wrong.
Check the method chip on the result first: bender chart, exact trig and radius-aware give slightly different numbers, and the app shows the difference. If it still looks wrong, use "Report a problem" in the app. It attaches your inputs, so we can check the exact case.
Is it in Spanish?
Yes. The app follows your phone's language, and you can switch it in Settings.
Can I get a refund?
Purchases go through Apple or Google, so refunds are handled by them: Apple at reportaproblem.apple.com, Google from your Play Store order history.
Something else? Email us, we read everything.
Check every mark against your bender and verify with your local code. StubCalc Bend is a calculator, not a substitute for the NEC, local rules or a qualified electrician. Not affiliated with NFPA or any bender maker; maker and model names identify which bender a profile is for.