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Turns to Radians

Type a value in Turns and get the result in Radians, calculated exactly.

1 tr ≈ 6.283185307 rad Angle converter

90 Turns ≈ 565.4866776 Radians

Precision

Conventional factorRounded for display to about 10 significant digits.

Twin dials

Turn either dial: drag it, use the arrow keys, or scroll while it has focus. Both cover the same range.

Range -50 – 100 tr = -314.159 – 628.319 rad

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Formula

rad = tr × 6.28318530718

To convert Turns to Radians, multiply the value by 6.28318530718.

Worked examples

  1. 0 tr × 6.28318530718 = 0 rad
  2. 90 tr × 6.28318530718 ≈ 565.4866776 rad
  3. 100 tr × 6.28318530718 ≈ 628.3185307 rad

This factor rests on a conventional or rounded value.

Conversion table

Turns to Radians
Turns (tr)Radians (rad)
1≈ 6.283185
5≈ 31.41593
10≈ 62.83185
15≈ 94.24778
30≈ 188.4956
45≈ 282.7433
60≈ 376.9911
90≈ 565.4867
120≈ 753.9822
135≈ 848.23
180≈ 1,130.973
270≈ 1,696.46
360≈ 2,261.947

Values marked ≈ are rounded; the rest are exact.

Reverse table: Radians to Turns
Radians to Turns
Radians (rad)Turns (tr)
1≈ 0.1591549
5≈ 0.7957747
10≈ 1.591549
15≈ 2.387324
30≈ 4.774648
45≈ 7.161972
60≈ 9.549297
90≈ 14.32394
120≈ 19.09859
135≈ 21.48592
180≈ 28.64789
270≈ 42.97183
360≈ 57.29578

Unit definitions

Turns tr
One full revolution: exactly 360 degrees.
Radians rad
The SI unit of angle: 180/π degrees, about 57.29578°.

Questions people ask

Turns to Radians: what is the conversion factor?

One tr is ≈ 6.283185307 rad.

How do I convert Turns to Radians?

Use the formula above. For example, 90 tr = ≈ 565.4866776 rad.

Is the conversion exact?

Very nearly. One of the units is based on a conventional or rounded value, so treat the result as a close approximation.

Factors checked 19 October 2026.