Arcsecond to Radian Converter

Angle Converter

14 units available

Decimals:

From

To

4.848137e-6

1 " = 4.848137e-6 rad

Formula:

rad = " × 0.0000048481

With your value: 1 " = 4.848137e-6 rad

Other Arcsecond to Radian conversions

2 " to rad 3 " to rad 4 " to rad 5 " to rad 6 " to rad 7 " to rad 8 " to rad

Arcsecond to Radian Conversion Table

Arcsecond (")	Radian (rad)
0.5	2.424068e-6
1	4.848137e-6
2	9.696274e-6
5	2.424068e-5
10	4.848137e-5
15	7.272205e-5
20	9.696274e-5
25	0.000121
50	0.000242
100	0.000485
250	0.001212
500	0.002424
1000	0.004848

Radian to Arcsecond Conversion Table

Radian (rad)	Arcsecond (")
0.5	103,132.403124
1	206,264.806247
2	412,529.612494
5	1,031,324.031235
10	2,062,648.062471
15	3,093,972.093706
20	4,125,296.124942
25	5,156,620.156177
50	10,313,240.312355
100	20,626,480.62471
250	51,566,201.561774
500	103,132,403.123548
1000	206,264,806.247096

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Arcsecond (")

Angle

Exact conversion

The radian is the coherent SI unit of plane angle; the degree is exactly π/180 rad and is accepted for use with the SI.

Source: Units accepted for use with the SI, SI Brochure Table 8

Bureau International des Poids et Mesures · Reviewed 2026-07-01

Radian (rad)

Angle

Exact conversion

The radian is the coherent SI unit of plane angle; the degree is exactly π/180 rad and is accepted for use with the SI.

Source: Units accepted for use with the SI, SI Brochure Table 8

Bureau International des Poids et Mesures · Reviewed 2026-07-01

How to Convert Arcsecond to Radian

To convert from Arcsecond (") to Radian (rad), multiply the value by 4.848137e-6.

Formula: rad = " × 0.0000048481

Reverse: " = rad × 206,264.8062470964

Step-by-Step Example

Start with your value in Arcsecond. For example: 5 "
Multiply by the conversion factor: 5 x 4.848137e-6
The result is: 2.424068e-5 rad

About Arcsecond

The arcsecond (") is a unit of plane angle. One arcsecond equals 0.0002777777778 radians. UnitConvertLab converts it against every other angle unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: angle calculations, engineering and science, education.

About Radian

The radian is the SI unit of angular measurement. One radian equals approximately 57.296 degrees.

Fun Fact: A full circle contains exactly 2π radians.

Common uses: mathematics, physics, engineering.

Frequently Asked Questions

How many Radian are in 1 Arcsecond?

There are exactly 4.848137e-6 Radian in 1 Arcsecond. This means the conversion factor from Arcsecond to Radian is 4.848137e-6.

What is the formula to convert Arcsecond to Radian?

The formula to convert Arcsecond to Radian is: rad = " × 0.0000048481. For example, to convert 10 Arcsecond to Radian, you would multiply 10 by 4.848137e-6.

What is a Arcsecond?