SAG Calculator
Calculate sagitta (arc height), arc length, and radius for circular segments.
Radius of the circle
Distance between endpoints
Height of arc (optional)
Display units for results
Sagitta
0.00
in
Arc Length
0.00
in
Angle
0.0
°
Radius
0.00
Chord
0.00
Area (segment)
0.00
Height to center
0.00
Central Angle
0.0
degrees
Arc Height Ratio
0.00
sag / chord
Radius / Chord
0.00
ratio
Circular Segment Visualization
Arc
Chord
Sagitta
Sagitta = Radius - √(Radius² - (Chord/2)²)
Arc Length = Radius × Angle (in radians)
Segment Area = (R²/2)(θ - sin(θ))