Quadrants
A quadrant is a quarter of a circle, 90°, a right angle.
Convert quadrants to any angle unit
1 quadrant = 90 degrees
Quick facts
1 quadrant in other units
| Degrees | 90 ° |
| Radians | 1.570796327 rad |
| Arcminutes | 5,400 ′ |
| Arcseconds | 324,000 ″ |
| Gradians | 100 grad |
| Milliradians | 1,570.796327 mrad |
| Turns | 0.25 tr |
| NATO mils | 1,600 mil |
What is a quadrant?
A quadrant is a quarter of a circle, 90°, a right angle.
Where the quadrant sits among angle units
The quadrant is number 23 of 24 on our scale of angle units, ordered from smallest to largest.
Top quadrant conversions
Convert quadrants to all 23 other units
Common
- quadrant to °
- quadrant to rad
- quadrant to ′
- quadrant to ″
- quadrant to grad
- quadrant to mrad
- quadrant to tr
- quadrant to mil
Astronomy & precision
Traditional & military
Convert to quadrants
Frequently asked questions
What is a quadrant?
A quadrant is a quarter of a circle, 90°, a right angle.
How is the quadrant defined?
90°, a quarter circle.
How many degrees are in a quadrant?
One quadrant equals 90 degrees.
How many radians are in a quadrant?
One quadrant equals 1.570796327 radians.
How many arcminutes are in a quadrant?
One quadrant equals 5,400 arcminutes.