Revolution (rev)
A revolution (turn) is one complete rotation: 360° or 2π radians. Rotational speeds in rpm count revolutions per minute.
Symbol: rev
Quantity: plane angle
SI relation: 1 rev = 6.28318530718 rad (exact)
Derivation: 1 revolution = 2π rad = 360°.
Exact: yes, by definition
Typical uses
- Rotating machinery (rpm)
- Wheels, gears and shafts
- Converting turns to radians for angular speed
Convert revolutions to other units
| Conversion | 1 rev equals | Reverse |
|---|---|---|
| revolution to radian | 6.283185307 rad | radian to revolution |
| revolution to degree | 360 ° | degree to revolution |
| revolution to gradian | 400 gon | gradian to revolution |
| revolution to minute of arc | 21600 ′ | minute of arc to revolution |
| revolution to second of arc | 1296000 ″ | second of arc to revolution |
Open the Angle Converter to convert any value between all units.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (radian) and Table 8 (non-SI units accepted for use with the SI).
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Revolution (rev). Retrieved October 25, 2026, from https://scientificconverters.com/units/revolution/
IEEE
Scientific Converters, "Revolution (rev)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/units/revolution/