Quick answer: 1 Arcsecond in Radian
1 " equals 0.00000484814 rad. To convert Arcsecond to Radian, multiply by 0.00000484814 using the free calculator above — no signup needed.
Angle units
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About Angle Converter
The Angle Converter converts between 5 different units, including Degree, Radian, Gradian, Arcminute, Arcsecond. The base unit is the Degree, and every other unit on this page is defined as an exact multiple of it. Type any value into the calculator above to convert instantly — free, unlimited, no signup and nothing to install.
Common equivalents: 1 Degree = 0.0174533 Radian, 1.111111 Gradian, 60 Arcminute.
Scale of this category: the smallest unit is the Arcsecond (") and the largest is the Radian (rad).
Last updated: 2026-09-15
Angle conversion factors
| Unit | Symbol | Value in Degree |
|---|---|---|
| Degree | ° | 1 ° = 1 ° |
| Radian | rad | 1 rad = 57.29578 ° |
| Gradian | grad | 1 grad = 0.9 ° |
| Arcminute | ' | 1 ' = 0.0166667 ° |
| Arcsecond | " | 1 " = 0.000277778 ° |
Worked Examples
See exactly how the conversion works with real numbers, step by step.
How much is 1 Arcsecond in Radian?
- Multiply 1 by the conversion factor 0.00000484814
- 1 Arcsecond = 0.00000484814 Radian
How much is 100 Arcsecond in Radian?
- Multiply 100 by the conversion factor 0.00000484814
- 100 Arcsecond = 0.000484814 Radian
How much is 1000 Arcsecond in Radian?
- Multiply 1000 by the conversion factor 0.00000484814
- 1000 Arcsecond = 0.00484814 Radian
Quick Conversion Reference Table
| Arcsecond (") | Radian (rad) |
|---|---|
| 1 " (Arcsecond) | 0.00000484814 rad (Radian) |
| 2 " (Arcsecond) | 0.00000969627 rad (Radian) |
| 5 " (Arcsecond) | 0.0000242407 rad (Radian) |
| 10 " (Arcsecond) | 0.0000484814 rad (Radian) |
| 20 " (Arcsecond) | 0.00009696270000000001 rad (Radian) |
| 50 " (Arcsecond) | 0.000242407 rad (Radian) |
| 100 " (Arcsecond) | 0.000484814 rad (Radian) |
| 500 " (Arcsecond) | 0.00242407 rad (Radian) |
| 1000 " (Arcsecond) | 0.00484814 rad (Radian) |
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How to Use This Converter
- Enter your value
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FAQ
How much is 1 Arcsecond in Radian?
1 Arcsecond = 0.00000484814 Radian.
How do I convert Arcsecond to Radian?
Enter your value in Arcsecond into the converter above and the result in Radian appears instantly. 1 " equals 0.00000484814 rad — just multiply your value by 0.00000484814.
What is the formula for Arcsecond to Radian?
The formula is: value in Radian = value in Arcsecond × 0.00000484814. For example, 100 " × 0.00000484814 = 0.000484814 rad.
Is this Arcsecond to Radian converter free and accurate?
Yes. This Arcsecond to Radian converter is 100% free, uses the exact international conversion factor (0.00000484814), and works on any device with no signup.
How do I convert Radian back to Arcsecond?
To convert back, divide by 0.00000484814 (or multiply by 206264.81). You can also use our dedicated How Many Arcsecond in 1 Radian? page for instant results.
Do I need to download an app or sign up?
No. The converter runs entirely in your browser — nothing to install, no account, no fees. It even keeps working offline once the page has loaded.
Which Angle units are supported?
This converter supports 5 units: Degree, Radian, Gradian, Arcminute, Arcsecond.