Arcsecond to Milliradian Converter (and vice versa)

Created by: tinycalcs.com/en
Number of supported units: 2
Last update: 2026

This converter allows you to convert arcseconds [″] to milliradians [mrad] or milliradians [mrad] to arcseconds [″]. Calculations are performed in both directions. The calculation result and the entered value are displayed with up to 20 decimal places for maximum accuracy.

1 arcsecond [″] ≈ 0.0048 milliradians [mrad]1 milliradian [mrad] ≈ 206.2648 arcseconds [″]

Convert arcseconds to milliradians

There are two simple ways to convert arcseconds [″] to milliradians [mrad]. In the first calculation method, the value in arcseconds [″] is divided by the rounded conversion factor of 206.2648. The second method multiplies the value in arcseconds [″] by the rounded conversion factor of 0.0048.

  • Milliradians [mrad] ≈ arcseconds [″] ÷ 206.2648
  • Milliradians [mrad] ≈ arcseconds [″] * 0.0048

However, rounded conversion values are only suitable for rough conversions, as rounding errors can occur in the calculation result. The most accurate conversion of arcseconds [″] to milliradians [mrad] can be achieved using the following calculation method.

  • Milliradians [mrad] = arcseconds [″] * π ÷ 648

Convert milliradians to arcseconds

Converting milliradians [mrad] to arcseconds [″] is easy and can be done in two ways. The first method involves multiplication, in which the value in milliradians [mrad] is multiplied by the rounded conversion factor of 206.2648. The second variant is a division. Here, the value in milliradians [mrad] is divided by the rounded conversion factor of 0.0048.

  • Arcseconds [″] ≈ milliradians [mrad] * 206.2648
  • Arcseconds [″] ≈ milliradians [mrad] ÷ 0.0048

However, rounded conversion values do not allow for exact calculations because rounding errors can occur in the calculation result. The most accurate conversion of milliradians [mrad] to arcseconds [″] can be achieved using the following calculation method.

  • Arcseconds [″] = milliradians [mrad] * 648 ÷ π

Converter

Decimal places

How it's calculated

Factor: 
≈ 206.265
Milliradians = Arcseconds * π ÷ 648
Arcseconds = Milliradians * 648 ÷ π

To all available units

Arcseconds

NATO mils

Arcseconds

Nautical mils

Arcseconds

Radians

Arcseconds

Revolutions

Arcseconds

Right angles