# CNC & 3D printer calculators — clove3d

Free machinist calculators for CNC machines and 3D printers. All calculations run in your browser. No sign-up, no tracking, no cookies.

## Tools

- [Steps per mm calculator](https://www.clove3d.com/tools/steps-per-mm/) — Steps/mm and steps/degree for leadscrews, belts and rack & pinion. Outputs GRBL and Marlin config lines.
- [Feeds & speeds calculator](https://www.clove3d.com/tools/feeds-speeds/) — Spindle RPM and feed rate from surface speed, tool diameter and chip load. Metric and imperial, with material presets.
- [Belt tension calculator](https://www.clove3d.com/tools/belt-tension/) — Tension GT2 and GT3 timing belts by plucking the span and measuring the resonant frequency.
- [Lathe RPM calculator](https://www.clove3d.com/tools/lathe-rpm/) — Optimal spindle speed for turning from workpiece diameter, material and tool type. Includes coolant recommendations.

## About

clove3d is a small, independent set of tools for people who build and run CNC machines and 3D printers. Every formula is shown and every result is worked out in the browser. Nothing is a black box.

Contact: contact@clove3d.com
Full content for AI agents: https://www.clove3d.com/llms-full.txt