Offset Bending Calculator

Offset Bend Length (inches): --



In the world of electrical conduit installations, precision is paramount. Accurate calculations can make the difference between a seamless installation and costly mistakes. One essential tool for electricians is the Offset Bending Calculator, which helps determine the length of offset bends needed to navigate around obstacles or corners. In this guide, we’ll show you how to create an Offset Bending Calculator using HTML code, making it accessible and easy to use for all your conduit bending needs.

 How to Use 

Using the Offset Bending Calculator is straightforward. Simply enter the following parameters into the designated input fields:

  1. Offset Distance (inches): The horizontal distance you need to offset the conduit.
  2. Conduit Diameter (inches): The diameter of the conduit you are working with.
  3. Bend Diameter (inches): The desired bend radius for your conduit.

After entering these values, the calculator will compute the Offset Bend Length automatically.


The Offset Bending Calculator utilizes the following formula:

OB = (2 * A) – (0.577 * D) – (3 * d)


  • OB represents the Offset Bend Length (in inches).
  • A is the Offset Distance (in inches).
  • D is the Conduit Diameter (in inches).
  • d is the Bend Diameter (in inches).


Let’s illustrate how the Offset Bending Calculator works with an example:

Suppose you have the following values:

  • Offset Distance (A) = 12 inches
  • Conduit Diameter (D) = 2 inches
  • Bend Diameter (d) = 4 inches

Using the formula:

OB = (2 * 12) – (0.577 * 2) – (3 * 4) OB = 24 – 1.154 – 12 OB ≈ 10.846 inches

So, the Offset Bend Length is approximately 10.846 inches.


Q1: Can I use this Offset Bending Calculator for different units of measurement? A1: This calculator is designed for inches. If you need to work with other units, you may need to convert your measurements accordingly.

Q2: What if I have multiple offset bends in my conduit? How do I calculate each one? A2: You can calculate multiple offset bends sequentially. Use the Offset Bend Length from one calculation as the Offset Distance for the next.

Q3: Is there a maximum limit for the Conduit Diameter (D) and Bend Diameter (d)? A3: The calculator does not have strict limits, but it’s important to ensure that your conduit bending equipment can accommodate the chosen diameters.

Q4: Can I incorporate this calculator into a web form with a clickable button? A4: Yes, you can integrate this calculator into an HTML form. Simply use the provided code in the <Form> and <Script> format for a user-friendly interface.


Creating an Offset Bending Calculator using HTML code can greatly simplify the conduit bending process for electricians and DIY enthusiasts. By following the provided formula and examples, you can accurately determine the Offset Bend Length, helping you achieve precise conduit installations with ease. Additionally, integrating this calculator into a web form makes it even more accessible for practical use in the field.

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