Overall Calculator Suite Introduction

Welcome to our Metal Bending Calculator Suite, a comprehensive set of precision tools designed specifically for professionals in sheet metal and profile rolling industries. This calculator bundle enables engineers, fabricators, and quality control specialists to quickly and accurately calculate critical bending parameters such as arc length, central angle, bending radius, ovality, chord length, and mid-ordinate values. Supporting both millimeters (mm) and inches (in) units, it simplifies complex calculations, improves design accuracy, and speeds up production workflows. Whether you’re working with aluminum extrusions, steel pipes, or custom bent profiles, this calculator suite is your ideal digital assistant for bending process optimization and quality assurance.

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Individual Calculator Descriptions and Usage

Arc Length Calculator

• Description: Calculates the arc length based on the given radius and central angle — essential for precise bending length measurement.
• How to Use: Enter the bending radius and central angle (in degrees), select your preferred unit (mm or inches), and click “Calculate” to get the exact arc length.
• Application: Ideal for estimating material length before rolling or bending sheet metals and profiles.

Central Angle Calculator

• Description: Computes the central angle when arc length and radius are known — helping define the bending angle precisely.
• How to Use: Input the arc length and radius, choose units, and click “Calculate” to find the central angle in degrees.
• Application: Useful for reverse engineering bending angles and machine setup verification.

Radius Calculator (from Arc Length and Central Angle)

• Description: Determines the bending radius based on known arc length and central angle — useful for design validation and process control.
• How to Use: Provide arc length and central angle values, select units, and click “Calculate” to obtain the bending radius.
• Application: Supports adjustment of bending parameters and quality inspection.

Pipe or Tube Ovality Calculator

• Description: Measures the ovality percentage of pipes or tubes by comparing maximum, minimum, and nominal outer diameters — critical for ensuring roundness and quality compliance.
• How to Use: Enter the minimum OD, maximum OD, and nominal OD values, choose units, then calculate to get the ovality percentage.
• Application: Widely used in pipe and tube bending processes to monitor deformation and maintain product standards.

Radius Calculator (from Chord Length and Rise)

• Description: Calculates bending radius from chord length and rise (mid-ordinate) — aiding in complex bending applications.
• How to Use: Input chord length and rise values, select units, and click “Calculate” for the bending radius.
• Application: Ideal for precise control of bending profiles where arc radius is not directly measurable.

Mid-Ordinate (Rise) Calculator

• Description: Computes the mid-ordinate or rise height from the bending radius and chord length — useful for measuring and verifying bent profiles.
• How to Use: Enter bending radius and chord length, pick the unit system, and calculate the mid-ordinate value.
• Application: Assists in quality control and design validation of bent sheet metal and profiles.

The graphic above depicts a simple single line drawing of the circular geometry components that relate to most bending applications. When specifying and detailing curved steel, there are a minimum number of components of this circular geometry that must be dimensionally specified. These components can be specified in different minimum combinations that will allow the bender-roller to generate other required information for processing. Some examples of the combinations are as follows:

Additional information for bending may be required for processing depending on fabricated member requirements. For example, if tangents are required, the length of tangents needs to be provided separately from other dimensional components.