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Metric McMaster icon

Metric McMaster

Converts imperial units to metric on McMaster-Carr and toggles tooltips via toolbar button.

Users83Current public install base
Rating5.0Store average score
Reviews4Public review volume
Manifest versionV3Extension platform version
7-day growth-8Net users gained this week
7-day growth rate-8.79%Relative weekly velocity
Preview

Metric McMaster Media preview

1 assets
Trend

User growth trend

Review user movement across collected snapshots.

User Growth Over Time

82858789922026年7月18日2026年7月21日2026年7月24日Latest: 83
Rating trend

7-day rating trend

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7-day rating change

Start
5.00
Latest
5.00
7-day rating change
0.00
4.904.955.005.055.102026年7月18日2026年7月21日2026年7月24日Latest: 5.00
2026年7月18日2026年7月24日
Growth overview

Daily, weekly, and monthly growth

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1-day growthDeclining
-2-2.35%
7-day growthDeclining
-8-8.79%
30-day growthGrowing
+4+5.06%
Technical snapshot

Version, languages, and crawl freshness

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Version1.0
ManifestV3
Size24.9KiB
Languages1English
Published
Store updated
Last crawled
English
Overview

Product summary

Review the store description, core capabilities, and common use cases.

Metric McMaster automatically converts imperial units to metric as you browse McMaster-Carr product pages. Unlike other converter extensions, Metric McMaster is specifically designed to handle the unique formatting and measurement styles used on the McMaster website, ensuring accurate and reliable conversions where other tools fail.

When you visit mcmaster.com, the extension detects measurements in inches, feet, pounds, and Fahrenheit, and displays their metric equivalents directly on the page. Simply hover your mouse over any imperial unit to see its metric conversion as a tooltip. You can toggle these helpful tooltips on and off at any time by clicking the extension’s toolbar button. This extension is ideal for engineers, students, and anyone who prefers to view metric units when sourcing parts, making it easier and faster to understand product specifications without manual calculations or switching tabs.

Reviews

Recent review snapshot

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Store average score5.0Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average5.0Average computed only from synced review bodies below
Reviews with text3Synced review bodies
Total ratings / reviews4Chrome Web Store public rating/review count

Store average score: 5.0. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.

5★
3
4★
0
3★
0
2★
0
1★
0
Kyle Brinkerhoff2026年7月2日
5

bruh. thank you.

Version 1.1.1Language en
Austin Cincotta2026年5月22日
5

This is one of the most useful tools I've ever found! It is such a huge quality of life improvement. Suggestion for new update: include the diameter of imperial screw sizes when hovering over them. I have truly no idea how big 2-56 is by looking at the size 2-56. Or I guess more specifically the gauge # sizing of imperial screws and holes; who knows a #8 screw is 0.164" in diameter? Thank you

Version 1.0Language en
1 helpful · 0 not helpful
Giovani Ceotto2025年5月29日
5

Works as described!

Version 1.0Language en
1 helpful · 0 not helpful
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