HomeAngleRadians to Arc Seconds

Radians to Arc Seconds Converter

Convert radians to arc seconds with the formula, a reference table and every angle unit.

Online Converter

Convert Radian to Arc Second

206,264.806247

Conversion Formula

″ = rad × 206264.8062

1 rad in every angle unit

Tap a unit to make it the target of the converter above.

Conversion factors

1 rad = 206,264.806247″
1″ = 0.000005 rad
″ = rad × 206264.8062

Using this converter

How to use
  1. 1

    Enter a value

    Type a number into the From box. It starts at 1 so you can see the basic ratio straight away. Thousands separators such as 1,250.5 are accepted.

  2. 2

    Choose your units

    This page opens with its own units selected. Use either dropdown to pick any other unit in the category, or tap a unit in the all-units list to make it the target.

  3. 3

    Read the result

    The answer updates as you type and the matching formula is shown underneath. There is no Convert button to press.

  4. 4

    Swap, copy or clear

    Swap reverses the direction, Copy Result copies a line such as 1 km = 0.621371 mi, and Clear empties the input so you can start again.

Supported input formats

Input

  • Supported
    Whole numbers25
  • Supported
    Decimal numbers2.75

    Use a dot as the decimal separator.

  • Supported
    Negative numbers-40

    Calculated for every unit. Quantities such as length or weight are normally positive, while temperatures can be negative.

  • Supported
    Thousands separators1,250.5

    Commas must group digits in threes. 1,234 is read as one thousand two hundred thirty-four.

  • Supported
    Scientific notation1.5e6

    Useful for very large or very small values (1.5e6 = 1,500,000).

  • Not supported
    Comma as decimal mark2,5

    Type 2.5 instead.

  • Not supported
    Fractions1/2

    Type 0.5 instead.

  • Not supported
    Numbers with unit text5 km

    Enter only the number and choose the unit from the dropdown.

Output

Results use US English formatting (1,234.56) and show up to 6 decimal places with trailing zeros removed. Very small results appear in scientific notation, such as 9.0949e-13, instead of rounding to zero.

Units available in this converter

  • Degree (°)
  • Radian (rad)
  • Gradian (gon)
  • Arc Minute (′)
  • Arc Second (″)

Quick reference tables

Common values for the units currently selected above, in both directions.

Radian to Arc Second
rad″
00
306,187,944.187413
459,281,916.281119
6012,375,888.374826
9018,563,832.562239
18037,127,665.124477
27055,691,497.686716
36074,255,330.248955
Arc Second to Radian
″rad
00
300.000145
450.000218
600.000291
900.000436
1800.000873
2700.001309
3600.001745

Limitations

  • Angles are not wrapped to one turn. 450° converts to about 7.853982 rad and is not reduced to 90°.
  • Degrees-minutes-seconds notation such as 40°26′46″ must be entered as a decimal value.
  • Results show up to 6 decimal places. Values are not rounded during calculation, and a non-zero result that would display as 0 is shown in scientific notation.
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