Arcsecond (″)
The arcsecond equals 1/60 of an arcminute and is needed for very small angles.
History: the arcsecond arose as a further sexagesimal division of the arcminute for precise astronomy.
Quickly convert arcseconds to radians without lookup tables or manual math.
This page is focused on converting arcseconds to radians. Type a number into the first field and the result appears immediately in the second field.
Example: 1 ″ = 0.0000048481 rad. Conversion formula: result = value × 4.8481368110954E-6 / 1.
Use this converter for everyday calculations, study notes, engineering checks, and quick value verification without installing a separate app.
The arcsecond equals 1/60 of an arcminute and is needed for very small angles.
History: the arcsecond arose as a further sexagesimal division of the arcminute for precise astronomy.
The radian is the main mathematical angle unit and expresses arc length divided by radius.
History: the radian is based on arc length divided by radius and became a natural angular unit in mathematics.
Enter a value in the Arcsecond field. The converter applies the formula "result = value × 4.8481368110954E-6 / 1" and immediately shows the result in radians.
1 ″ = 0.0000048481 rad.
Yes. Use the swap button or choose the reverse pair from the full conversion list.