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SparkShift

The app built for electrical apprentices and contractors. GPS-verified OJT tracking, NEC calculators, and community tools. Works with IBEW, IEC, ABC, and non-union programs.

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32969 Hamilton Ct. E Suite 138D PMB 1034

Farmington Hills, MI 48334

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As an Amazon Associate, SparkShift earns from qualifying purchases. SparkShift is a participant in the Amazon Services LLC Associates Program and other affiliate advertising programs designed to provide a means for us to earn fees by linking to Amazon.com, HomeDepot.com, and affiliated sites. View our affiliate disclosure policy

SparkShift is an independent tool for electricians and is not affiliated with, endorsed by, or an official product of the International Brotherhood of Electrical Workers (IBEW), the National Joint Apprenticeship and Training Committee (NJATC/electrical training ALLIANCE), or any specific JATC or local union unless explicitly stated.

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    All Calculators

    Conduit Bending Offset Calculator

    Calculate the distance between marks and shrink amount for EMT and rigid conduit offset bends. Supports 10°, 22.5°, 30°, 45°, and 60° bend angles.

    Conduit offset bends require calculating the distance between two bend marks on the conduit. The formula is: Distance = Offset Height × Multiplier, where common multipliers are 2.0 for 30° bends and 1.414 for 45° bends. Shrink must be subtracted from the overall conduit length.

    Professional Use Only: Verify all results with a licensed electrician before installation.

    Offset Parameters
    Multiplier: 2  |  Shrink per inch: 0.250"
    Bend Results
    12.00"
    Distance Between Marks
    1.500"
    Shrink Amount

    →Recommended Next Steps

    1. Measure and mark the first bend point on the conduit
    2. Place second mark 12.00" from the first mark
    3. Subtract 1.500" shrink from total conduit length measurement
    4. Use a bender with the correct shoe size for your conduit type

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    Related Calculators

    Conduit Fill
    Wire Pulling
    Box Fill

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    Wire Size CalculatorConduit Fill CalculatorBox Fill CalculatorVoltage Drop CalculatorView All 200+ Calculators →

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    ⚠️ IMPORTANT LEGAL DISCLAIMER

    For Reference Only: This calculator is provided for educational and informational purposes only. It is not intended to be a substitute for professional engineering design, advice, or certification.

    Code Compliance: Calculations are based on the 2023 National Electrical Code (NEC®). However, local codes, amendments, and Authority Having Jurisdiction (AHJ) requirements vary by location and may supersede standard NEC requirements.

    No Liability: SparkShift and its affiliates assume no liability for errors, omissions, or the use/misuse of this tool. Users are solely responsible for verifying all results against applicable codes and standards before installation. Always consult a licensed electrician or engineer.

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