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Your US & Metric
System Converter
Available in English and French
Disponible en Anglais et Français
US Metric Convert
Metric ↔ English converter
Built for accuracy
Fast answers, no clutter.
Convert yards to meters, inches to centimeters, pounds to kilograms, gallons to liters, and temperatures between metric and imperial systems with a clean, focused tool built for quick, accurate results.
Reference Matrix
Common conversions
Fast reference rows built for search-friendly answers, longer sessions, and future in-feed ad placement.
Did You Know?
Why the US Still Uses the Imperial System
Nearly every country on Earth uses the metric system. The United States is one of only three nations — alongside Liberia and Myanmar — that hasn't fully adopted it. For American travelers and Canadian hosts alike, this creates everyday friction: a "75°F" forecast, a "6-foot" hotel bed, or a recipe calling for "cups" instead of milliliters.
A history of near-misses.
The US actually flirted with going metric more than once. Thomas Jefferson considered a decimal-based system in the 1790s. Congress legalized metric units in 1866, and the Metric Act of 1975 set up a voluntary conversion program. But without a hard deadline or penalty, businesses and consumers stuck with what they knew — inches, pounds, and Fahrenheit.
Cost and habit, not stubbornness.
Switching road signs, manufacturing tools, and consumer products to metric would cost billions and disrupt established systems. Meanwhile, generations of Americans have grown up thinking in feet and pounds, the same way many francophone Canadians instinctively reach for the metric system they were raised with.
Why this matters for travelers.
If you're visiting the US from Canada, Europe, or almost anywhere else, you'll likely need quick conversions for driving distances (miles vs. kilometers), weather (Fahrenheit vs. Celsius), cooking, and shopping. That's exactly the gap this tool is built to close — fast, accurate conversions between the two systems, whichever direction you're going.
FAQ
Frequently Asked Questions
One foot equals 30.48 centimeters.
100°F equals approximately 37.8°C.
One kilogram equals approximately 2.2 pounds.
One US gallon equals approximately 3.785 liters.
One kilometer equals approximately 0.621 miles.
0°C equals 32°F, the freezing point of water.
About us
About US Metric Convert
US Metric Convert was created to solve a simple, everyday problem: millions of people regularly need to switch between the metric system used almost everywhere in the world, and the imperial system still used in the United States.
The idea came from real experience. While working in the tourism industry in Quebec, Canada, I often saw American visitors struggle with kilometers, Celsius, and kilograms. This site was built to bridge that gap quickly and simply, without intrusive ads or unnecessary complexity.
Our goal is to offer a free, fast, and accurate unit converter, available in both English and French, for travelers, students, professionals, and anyone who needs quick, reliable conversions.
This site is independently run, with a continued focus on accuracy and ease of use.
Contact
Contact Us
Have a question, a suggestion, or noticed a conversion error? Feel free to reach out.
We typically respond within 24–48 hours.