Radian to Second Conversion

Convert between Radian and Second quickly and accurately.

From Radian

rad

To Second

How to Convert Radian to Second

Conversion Formula

1 rad = 206264.79 "

1 " = 0 rad

Example

Convert 15 rad to ":

15 rad = 15 × 206264.79 " = 3093971.846 "

Unit Information

Learn about the angle units you're converting between

Radian

rad

Definition

Radian is the SI unit for measuring angles, defined as the angle subtended by an arc equal in length to the radius of the circle. One radian equals approximately 57.2958 degrees.

History/Origin

The radian was introduced by James Thomson in 1873. It became the standard unit for angular measurement in the International System of Units (SI) due to its mathematical elegance.

Current Use

Radians are used in mathematics, physics, engineering, computer graphics, and scientific calculations where precise angular measurements are required.

Multiplier

57.296

Offset

Second

Definition

Second of arc (arcsecond) is a unit of angular measurement equal to 1/60 of a minute or 1/3600 of a degree. There are 60 seconds in one minute and 3600 seconds in one degree.

History/Origin

The second of arc was developed as a further subdivision of the minute for extremely precise astronomical measurements. It follows the same sexagesimal system used for time.

Current Use

Seconds are used in astronomy, precision surveying, satellite navigation, and other applications requiring very precise angular measurements.

Multiplier

Offset