geometry calculator

Sagitta Calculator

This page is tuned for clean geometry checks during drafting or homework around sagitta.

Estimate

Enter job values, review the estimate, then use the decision hints before ordering or quoting.

Estimate Results

Enter values to see the result.

Check

Mixing units across the inputs before reading the result.
Entering a value outside the formula conditions and treating the result as valid.

Example

Radius 10, Chord Length 12 gives Sagitta 2. 00.

Formula

sagitta = r - sqrt(r^2 - (c/2)^2)

The sagitta is the height between the chord midpoint and the arc, derived from a right triangle inside the circle.

Chord length cannot exceed the diameter.

Next Step

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Chord Length Calculator

Next: chord length.

FAQ

When should I keep more decimals? for sagitta?

Keep more decimals whenever this result will be reused in another formula, drawing step, or comparison instead of being rounded once at the end.

Important Use Notice

Informational calculator only. Verify important outputs independently before legal, tax, medical, engineering, safety-critical, contractual, employment, or compliance use.