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Conversion Tools

Angle Converter

Convert angles between deg, rad, and grad.

Last validated: 2026-02-14

Angle Converter converts between degrees, radians, and gradians for math, engineering, and graphics workflows. It is useful when switching between calculator modes, coding trigonometric functions, or reading CAD/geometry documentation that uses different angular units. The tool provides direct conversion and all-unit equivalents at once so you can cross-check quickly. This reduces unit confusion when formulas expect radians but inputs are in degrees or grads. Use it to keep trigonometric calculations and technical drawings consistent.

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Input Pattern

Enter values in the left panel, keep units explicit, run the calculation, then copy or share the result. Invalid fields are highlighted immediately.

Angle Converter

Result

90 Degree (deg) = 1.57079633 Radian (rad)

All Units

Degree (deg)90
Radian (rad)1.57079633
Gradian (grad)100

How to use this tool

  1. Enter the angle value and choose the source unit.
  2. Select the target unit and click `Convert`.
  3. Use the equivalents table to verify degree/radian/grad relationships.

Worked Example

Auto-generated from the tool's current default or entered inputs.

Example Inputs

  • Value: 90.0
  • From unit: deg
  • To unit: rad

Expected Outputs

  • Value: 90
  • Converted value: 1.570796

Interpretation

Scenario Compare (A vs B)

Use this to compare two input sets and quantify change in key outputs.

Scenario A

Scenario B

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