1 Radian to Gradians

1 rad ≈ 63.662 grad

Calculation: grad = 1 rad × 63.662 ≈ 63.662 grad

Radian to Gradian Converter

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Sig. Figures:

How wide is 1 rad?

1 radian (57.3 degrees) is comparable to the tilt of a recliner chair leaned back for comfort.

What does 1 rad look like?

Illustration of a recliner chair tilted back
1 radian (57.3 degrees) is comparable to the tilt of a recliner chair leaned back for comfort.

How to Convert Radian to Gradian

1 radian = 63.662 gradians exact

Gradian = Radian × 63.662

Example: 1 rad × 63.662 = 63.662 grad

Reverse Conversion

To convert gradians back to radians:

  • Remember, 1 gradian equals 0.015708 radians.
  • To convert 63.662 grad to rad, multiply 63.662 x 0.015708, resulting in 1 rad.

exact This conversion factor is exact by international definition.

1 rad is also equal to:

About these units

Radian: The radian (rad) is the SI derived unit of plane angle. It is defined as the angle subtended at the center of a circle by an arc equal in length to the radius.Although mathematically dimensionless, th...

Gradian: The gradian (grad) divides a right angle into 100 equal parts, making 400 gradians in a full circle.It is used in surveying, geodesy, cartography, and some engineering standards, especially in parts o...

Frequently Asked Questions

How much is 1 radian in gradians?

1 radian equals 63.662 gradians. This is calculated by multiplying 1 by the conversion factor 63.662.

What does 1 radian look like in gradians?

1 radian equals 63.662 gradians, a conversion used in navigation, trigonometry, and engineering design.

How do you calculate 1 radian to gradians?

Multiply 1 by the conversion factor 63.662. The calculation is 1 × 63.662 = 63.662 gradians. This factor is defined by international measurement standards.

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1 radian = 63.662 gradians
1 radian = 63.662 gradians — conversion chart

For general conversions between radians and gradians, see the radians to gradians converter.

Conversion factors verified against BIPM, ISO 80000-3 1 turn = 2π rad = 360° (exact, ISO 80000-3). Last reviewed: March 2026
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.