WireGaugeCalc Free calculator · NEC cited · works offline
Bending Calculator
Bending calculator is quick with WireGaugeCalc, since you enter the offset depth and angle and it returns the distance between bend marks.
It applies the standard offset multipliers and bender take-up so your measurements land on the pipe.
You mark the conduit once and bend it right the first time.
Open the calculatorEnter any two values and read the rest.
Ohm’s law: V = I × R and P = V × I. Field aid only, verify against the current NEC and your local authority having jurisdiction.
Offsets, saddles, and 90 degree bends
The tool uses the bend multiplier for your chosen angle, since that sets the mark spacing for an offset.
It accounts for take-up on a 90 so the stub finishes at the height you need.
Accurate marks mean less wasted pipe and fewer reworked runs.
Marks for the bends you make daily
WireGaugeCalc handles the common conduit bends:
- Offset distance between two bend marks
- Three point saddle center and outer marks
- 90 degree stub with take-up subtracted
- Common angles like 22.5, 30, and 45 degrees
- Shrink amount for the offset
- Results in inches for direct marking
One app for every NEC calculation
WireGaugeCalc keeps the calculations you reach for most in one place:
- Voltage drop and wire sizing for any run
- Conduit fill for EMT, PVC, and RMC
- Box fill and junction box sizing
- Ampacity and temperature derating
- Motor circuit and load calculations
- Conduit bend offsets and saddles
Built for the field, works offline
The whole app runs on your phone, so it keeps working in a basement, an attic, or a job site with no signal.
There is no account to create and nothing to load. Open it, run the number, and get back to work.
- No signup and no signal needed
- Answers in a tap, not a spreadsheet
- Same tool on phone, tablet, and desktop
Every result cites the NEC article
Each answer shows the table or formula it came from, so you can check the method and learn the code as you go.
That makes the app useful on the job and during exam prep, since the reasoning is right next to the number.
Switch the code year your job runs on
Jurisdictions adopt the NEC at different times, so you can match the calculation to the code in force:
- NEC 2017, 2020, and 2023 tables
- Copper and aluminum conductors
- 60, 75, and 90 degree C terminations
- Single-phase and three-phase systems
Run the number, then get back to work
Stop flipping through a paper book or hopping between calculator sites. Enter your values, read the code-cited answer, and move on. Free to use, no signup.
Open the calculatorFrequently asked questions
Why does my offset come up short or long?
Offset error usually comes from the wrong multiplier or forgetting shrink, which pulls the run back as the bends rise. Match the multiplier to the angle and account for shrink, and the tool does both for you.
Does the bend angle change the multiplier?
Yes. Each angle has its own multiplier, so a 30 degree offset uses 2 while a 45 degree offset uses about 1.4. The calculator applies the correct multiplier for the angle you choose. Verify spacing against your bender markings and your local authority having jurisdiction where it applies.
Is WireGaugeCalc free to use?
Yes. Every calculator is free to run with no signup. A paid tier adds saved projects, PDF reports, and extra code years, but the core math stays free.
Does it work without internet?
Yes. The app runs on your device, so it keeps working with no signal on a job site, in a basement, or in an attic.
Are the results code accurate?
Results follow published NEC tables and standard formulas, and each answer shows the article it came from. It is a field aid, not a stamp of approval, so verify against the current code and your local authority before you wire anything.
Which NEC code year does it use?
You can switch between NEC 2017, 2020, and 2023, since jurisdictions adopt the code at different times. Pick the year your job runs on.