VYRCO / Machining

Bolt circle coordinates

Get an XY table of equally spaced points on a circle with a defined center and starting angle.

Free · no accountv1.0 · 2026-10-10Private inputs in your browser

Bolt circle coordinates

VYRCO · v1.0 · https://vyrco.com/en/tools/bolt-circle/

Input data

Numbers: use a decimal point or comma, without thousands separators. Complete fields unless marked optional.

Preparing the tool…

Your inputs are processed here and are not sent to VYRCO. There is no autosave: download your project before closing or switching languages. Opening JSON reads a local file; it does not upload it. CSV includes inputs and results. For PDF, use Print / PDF and select Save as PDF.

How to use it

Enter circle diameter and point count.
Define the XY center and first-point angle from +X.
Review orientation, origin and table before transferring it to another document.

Fictional example

Fictional example: 4 points on Ø100 mm, center (10, 20), start 0° → (60,20), (10,70), (−40,20), (10,−30).

Method

R = D/2; step = 360°/N. For i = 0…N−1: θi = θ0 + i × step; Xi = Xc + R cos θi; Yi = Yc + R sin θi. Zero angle points toward +X; angles increase counterclockwise with +Y upward.

Scope and limitations

Between 2 and 360 points. Geometric coordinates in an XY plane; no G-code or checks of machine origin, tool, hole diameter, edge spacing or tolerances. Table decimal places do not represent manufacturing accuracy.

Sources and review

OpenStax · Calculus Volume 2 · Polar coordinates
Accessed: 2026-10-10

Tool v1.0 · Reviewed 2026-10-10. To report an error, include tool, version, units and a non-confidential example.

info@vyrco.com

Bolt circle coordinates

Bolt circle coordinates

Input data

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