Angle converter

Enter a value, choose its current unit and select the target unit. The table shows equivalent values within the same physical quantity. Signed values are supported; conversion does not change the meaning of a negative measurement.

180° = π rad; 30° 30′ 0″ = 30.5°

DMS input uses a separate sign, nonnegative whole degrees, whole minutes below 60 and seconds below 60. DMS output is rounded to six decimal places in seconds and is available within one million degrees in either direction.

Reference: NIST SI conversion factors

The result above uses these exact values. This snapshot is included when the page is printed so the output can be checked against the original measurements.

Angle input

Decimal units

Value

180

From unit

°

To unit

rad

Primary result: Converted value: 3.141592654 rad.

• Check the selected mode, units and input values before using the result.
• Read the assumptions and rounding rules; compare the worked example with your intended calculation.
• A numerical result does not supply missing context or change the stated limitations.

Results use floating-point arithmetic and are displayed to ten significant digits. This tool does not measure an object, infer missing dimensions or supply material density. Keep unrounded values for further calculations when precision matters.