About this tool

Degree to Radian Converter

Convert degrees to radians instantly. Free, bidirectional, and fully in-browser.

1 degree equals 0.01745329252 radians — enter any degree value to convert it to radians instantly. This Degree to Radian converter is a client-side tool: it applies a single multiplication (rad = ° × 0.01745329252) in your browser, updates the moment you type, and works in both directions — edit either field, or press swap, to convert radians back to degrees. A reference table lists common degree values already converted, and nothing you enter is sent to a server.

How to use Degree to Radian Converter

1. 1

   Open Degree to Radian Converter on AltFTool — it loads instantly in your browser.

2. 2

   Type the value you want to convert into the Degree field.

3. 3

   Read the equivalent in radians in the result field, and copy it if needed.

4. 4

   Use the decimal-places slider for more or less precision, or press swap to convert radians to degrees.

Why use Degree to Radian Converter

• Instant, both ways

  The result updates as you type, and the swap button flips the conversion to radian → degree without reloading.

• Exact Angle math

  The conversion uses the precise factor (rad = ° × 0.01745329252), so the number matches a manual calculation to the decimal places you choose.

• Adjustable precision

  A slider sets 0–10 decimal places, and very small or very large results switch to scientific notation instead of rounding to zero.

• Private and free

  Everything runs locally in your browser — no upload, no account, no limit on conversions.

Common use cases

• Converting a degree measurement to radians for a spec, listing, or report.
• Checking degree↔radian figures while comparing products, datasets, or documentation.
• Learning the degree-to-radian relationship from the worked formula and the common-value table.

Frequently asked questions