Radian to Turn Converter (and vice versa)

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

This converter allows you to convert radians [rad] to turns [tr] or turns [tr] to radians [rad]. 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 radian [rad] ≈ 0.1592 turns [tr]1 turn [tr] ≈ 6.2832 radians [rad]

Convert radians to turns

There are two simple ways to convert radians [rad] to turns [tr]. In the first calculation method, the value in radians [rad] is divided by the rounded conversion factor of 6.2832. The second method multiplies the value in radians [rad] by the rounded conversion factor of 0.1592.

  • Turns [tr] ≈ radians [rad] ÷ 6.2832
  • Turns [tr] ≈ radians [rad] * 0.1592

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

  • Turns [tr] = radians [rad] ÷ π ÷ 2

Convert turns to radians

Converting turns [tr] to radians [rad] is easy and can be done in two ways. The first method involves multiplication, in which the value in turns [tr] is multiplied by the rounded conversion factor of 6.2832. The second variant is a division. Here, the value in turns [tr] is divided by the rounded conversion factor of 0.1592.

  • Radians [rad] ≈ turns [tr] * 6.2832
  • Radians [rad] ≈ turns [tr] ÷ 0.1592

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

  • Radians [rad] = turns [tr] * π * 2

Converter

Decimal places

How it's calculated

Factor: 
≈ 6.283
Turns = Radians ÷ π ÷ 2
Radians = Turns * π * 2

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