Simple, quick & accurate mm to inches conversion tool. Convert millimeters to decimal inches and fractions (1/16, 1/32, 1/64).
Users
72
+7 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#95K
#80K among extensions
Version
1.2
updated 18 Dec 2025
Users
monthly, 10 months
Latest, 19 Oct 2026:72 usersMove the mouse over the chart for any month
Ratings count
monthly, 10 months
Latest, 19 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About MM to Inches
Short Description
Convert millimeters (mm) to inches (in) instantly, with decimal and common fraction outputs (1/16, 1/32, 1/64). Designed for woodworking, engineering, and e‑commerce product sizing.
Full Description
MM to Inches - Millimeter to Inch Helper
Make unit conversion fast and accurate. Stop doing manual calculations or searching for charts.
Key Features:
- One-click conversion from millimeters (mm) to inches (in)
- Shows both decimal inches and common fractional inches (1/16, 1/32, 1/64)
- Basic mode: for everyday quick conversions
- Wood mode: optimized for woodworking, boards, and lumber dimensions
- Eng mode: built for engineering and mechanical dimensions
- E-com mode: optimized for online sellers, with separate length, width, and height inputs
- One-click copy of text results for spreadsheets, tickets, and documentation
- One-click copy of dimension images for chat apps, factory communication, and requirement confirmation
Who Is It For?
- Woodworkers and DIY makers
- Engineers, mechanical designers, and drafters
- Cross-border e-commerce sellers, operators, and customer service
- Anyone who frequently switches between mm and inches
Typical Use Cases:
- Filling in imperial (L × W × H) sizes on product detail pages
- Sending dimension confirmation images to factories or clients
- Converting millimeter labels to fractional inches that match physical rulers
Why This Extension?
- Purpose-built for millimeter to inch conversion
- Clean, focused interface that opens instantly from the browser toolbar
- Clear conversion logic to avoid manual calculation errors
- Mode layouts tailored separately for woodworking, engineering, and e‑commerce workflows
Keywords:
mm to inches, millimeter to inch, unit converter, dimension converter, woodworking, engineering, mechanical drawing, e‑commerce, product sizing, LxWxH.
Support and links:
- Website & usage guide: https://mm-to-inches.net
- If you run into issues or have suggestions, please use the contact or feedback options provided on the website.
Privacy:
- This extension does not collect, store, or transmit any personally identifiable information (PII).
- All inputs, conversions, and copy actions happen locally in your browser and are not sent to any server.
- No ads, tracking pixels, analytics SDKs, or third‑party statistics scripts are included.
Permissions:
- `contextMenus`: Adds a conversion item to the right‑click menu so that, when you select a number like “6” or “6mm”, you can trigger the extension popup with that value prefilled.
- `clipboardWrite`: Powers the “Copy Text” and “Copy Image” buttons, allowing the extension to write the converted result into your clipboard.
Data usage:
- Numeric values you enter are used only for real‑time conversion and display; they are not persisted.
- Text and images written to the clipboard are created only when you explicitly click the copy buttons.
- The extension does not analyze or upload your browsing history, form data, or page content.
Single purpose statement:
This extension has a single purpose: to convert between millimeters and inches in the browser and help you copy the resulting dimensions as text or images. It does not provide any unrelated features.
Why these permissions are required:
We request only the minimum permissions needed to support this single purpose:
- `contextMenus` lets the extension add a right‑click menu item that, when clicked, opens the extension popup with the selected number automatically prefilled.
- `clipboardWrite` is needed so that, when you click a copy button, the current conversion result can be placed directly on your clipboard.
The extension does not perform background tasks beyond this scope.
From: https://mm-to-inches.net
After installation, click the “MM to Inches” icon in the browser toolbar to open the popup and start converting your dimensions immediately.
Growth
Window
Users
Change
Ratings
Rating
7 days
+2
+2.9%
0
0.00
30 days
+7
+10.8%
0
0.00
6 months
+48
+200.0%
0
0.00
Chrome Web Store search rankings
Where MM to Inches appears when people search the store, with the 30 day change