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Conversion Tools

Angle Converter

Convert angles between deg, rad, and grad.

Formula reviewed: 2026-02-14 Conversion Tools

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.

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.

Angle Converter

Result

90 Degree (deg) = 1.57079633 Radian (rad)

All Units

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

How to interpret the result

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