Radian to Arcsecond Converter

Angle Converter

14 units available

Decimals:

From

To

206,264.806247

1 rad = 206,264.806247 "

Formula:

" = rad × 206,264.8062470964

With your value: 1 rad = 206,264.8062471 "

Other Radian to Arcsecond conversions

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

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

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

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.

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

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

How to Convert Radian to Arcsecond

To convert from Radian (rad) to Arcsecond ("), multiply the value by 206,264.8062470964.

Formula: " = rad × 206,264.8062470964

Reverse: rad = " × 0.0000048481

Step-by-Step Example

Start with your value in Radian. For example: 5 rad
Multiply by the conversion factor: 5 x 206,264.8062470964
The result is: 1,031,324.031235 "

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.

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.

Frequently Asked Questions

How many Arcsecond are in 1 Radian?

There are exactly 206,264.8062470964 Arcsecond in 1 Radian. This means the conversion factor from Radian to Arcsecond is 206,264.8062470964.

What is the formula to convert Radian to Arcsecond?

The formula to convert Radian to Arcsecond is: " = rad × 206,264.8062470964. For example, to convert 10 Radian to Arcsecond, you would multiply 10 by 206,264.8062470964.

What is a Radian?