Circle & Ellipse Calculator
Calculate a circle’s radius, diameter, circumference and area from any single known value, plus optional sector arc length and area — or an ellipse’s area, perimeter (Ramanujan approximation), eccentricity, foci distance and semi-latus rectum from its semi-major/semi-minor axes.
Authorizations
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
Body
Shape
circle, ellipse Unit
mm, cm, m, in, ft, yd Decimal precision
0, 1, 2, 3, 4, 5, 6, 8, 10 Solve circle from
radius, diameter, circumference, area Radius
x >= 0Diameter
x >= 0Circumference
x >= 0Area
x >= 0Sector angle (°)
0 <= x <= 360Semi-major axis (a)
x >= 0Semi-minor axis (b)
x >= 0Response
Tool output
The tool's slug, echoing the {slug} in the request path.
Output-contract version for this tool.
Credits this call consumed, after any settlement refund. 0 when metering is disabled.
Credits left in the current monthly allowance, or null when metering is disabled.
Correlation id, also sent as x-request-id.