Inches ⇄ Mm Converter

Short Description:
Precision inch↔mm converter for CNC manufacturing. Right‑click selection, machining & tolerance mini tools.

Description:
Inches ⇄ MM is a precision converter built for manufacturing engineers and CNC machinists.

Key features:
- Fast inch↔mm conversion with up to 6 decimals
- Right‑click selection conversion from any webpage
- Machining allowance mini‑calculator (simplified)
- ANSI→ISO tolerance fit mapping (simplified)
- Copy result in one click
- Industrial dark UI consistent with inches-to-mm.com

How it works:
- Convert direction toggle with a vertical swap button
- Precision selector for common decimal places
- Context menu pre‑fills the popup with your selection (e.g., “6 mm”, “2.5 in”)

Permissions:
- `contextMenus`: adds “Convert selection” to the right‑click menu
- `storage`: stores a prefill value locally to open the popup with selection
No network requests. No personal data collection.

Support & website:
- Website: https://inches-to-mm.com
- Tools: https://inches-to-mm.com/machining, https://inches-to-mm.com/tolerance
- Privacy: https://inches-to-mm.com/privacy
- Support: https://inches-to-mm.com/faq