Why this tool is useful
Use this converter when specifications, downloads or measurements are given in radians, but your worksheet or destination requires arcseconds. It avoids manual factor mistakes.

Convert radians (rad) to arcseconds (arcsec) with a transparent angle formula.
Ready. Your working data stays in this browser.
Use this converter when specifications, downloads or measurements are given in radians, but your worksheet or destination requires arcseconds. It avoids manual factor mistakes.
The browser converts rad to the shared angle base unit using scale 1 and offset 0, then converts that base value to arcsec using scale 4.84814e-06 and offset 0.
For example, entering 1 rad returns 206264.8062 arcsec. Results include the formula and enough precision for a quick verification.
The calculation is deterministic and explains validation errors instead of silently changing invalid input.
Input and output remain in this tab. Copy and download happen through browser APIs without a server upload.
Every run reports its tool mode, timestamp and input/output size so transformed data can be audited.