Is Angle Converter free?

Yes, completely free with unlimited conversions and no registration required.

What angle units can I convert?

You can convert between three units: degrees (°), radians (rad), and gradians (gon). All conversions are instant and accurate.

How do I convert degrees to radians?

Enter your degree value, select 'Degrees' as input unit, check 'Radians' in output options, and results appear instantly. For example, 180° = π radians.

A gradian (gon) is an angle measurement where a full circle equals 400 gradians. It's commonly used in surveying and engineering applications.

Does Angle Converter work on mobile?

Yes, works seamlessly on all devices including iPhone, Android, tablets, and desktop computers with no app installation needed.

Yes, completely private. All conversions happen locally in your browser—no data is sent to servers or stored.

Can I convert multiple angles at once?

Convert one angle at a time using the main converter. For bulk conversions, enter each value separately and copy results as needed.

What is the conversion formula for degrees to radians?

Radians = Degrees × (π/180). For example, 90° × (π/180) = π/2 radians ≈ 1.5708 rad.

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Angle Converter — best

Convert between degrees, radians, and gradians.

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All angle conversions

Degrees (°)NaN

Radians (rad)NaN

Gradians (grad)NaN

Arcminutes (')NaN

Arcseconds (")NaN

TurnsNaN

How to use Angle Converter

Enter your angle value

Type your numeric angle value into the input field labeled 'Enter Angle'. You can use whole numbers (180) or decimals (45.5).

Select the input unit

Click the dropdown menu next to the input field and choose your current unit: Degrees (°), Radians (rad), or Gradians (gon).

Choose output units

Select which unit(s) you want to convert to using the checkboxes labeled 'Degrees', 'Radians', and 'Gradians' in the output section.

View instant results

Your converted values appear automatically in the results panel below. Copy any result using the copy icon next to each converted value.

Frequently Asked Questions

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