Free Online Converters

Need to switch between metric and imperial units — fast? Enodum’s converter collection gives you instant, accurate conversions without ads, sign-ups, or cluttered search results. Whether you’re converting a recipe from cups to milliliters, checking the weather in Celsius instead of Fahrenheit, or calculating square footage for a home project, the right converter is right here.

Every converter on this page runs directly in your browser: nothing to download, nothing to install, and no data ever leaves your device. Our conversion factors are sourced from NIST and SI standards, and you can cross-reference multiple units in a single view — compare meters, feet, inches, and miles all on one screen.

Pick a converter below to get started. 6 converters and counting — all free, all the time.

Area Converter

Convert between common area units — square feet, square meters, acres, hectares, square miles, square yards. Free area unit converter.

Convert between square feet, square meters, acres, hectares, and square miles. Great for real estate, landscaping, and agriculture.

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Length Converter

Convert between metric and imperial length units — meters, feet, inches, miles, kilometers, centimeters, millimeters. Free length unit converter.

Convert between meters, feet, inches, miles, kilometers, centimeters, and millimeters. Ideal for construction, travel, and everyday measurements.

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Speed Converter

Convert between common speed units — mph, km/h, m/s, knots, feet per second. Free speed (velocity) unit converter.

Convert between mph, km/h, m/s, knots, and feet per second. Useful for driving, running, aviation, and physics.

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Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin. Free temperature converter with the exact mathematical relationships for all six conversions.

Convert between Celsius, Fahrenheit, and Kelvin. Essential for cooking, science, travel, and weather comparisons.

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Volume Converter

Convert between metric and imperial volume units — liters, milliliters, US gallons, quarts, pints, cups, fluid ounces. Free volume unit converter.

Convert between liters, gallons, cups, milliliters, and fluid ounces. Handy for cooking, baking, and fuel measurement.

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Weight Converter

Convert between metric and imperial weight units — kilograms, pounds, ounces, grams, milligrams, stones. Free weight (mass) unit converter.

Switch between kilograms, pounds, ounces, grams, and stones. Perfect for fitness tracking, cooking, and shipping.

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Frequently Asked Questions About Our Converters

What unit converters does Enodum offer?▼
Enodum currently offers six free unit converters: Length (meters, feet, inches, miles), Weight (kilograms, pounds, ounces, stones), Temperature (Celsius, Fahrenheit, Kelvin), Volume (liters, gallons, cups, milliliters), Speed (mph, km/h, m/s, knots), and Area (square feet, square meters, acres, hectares). Each converter handles multiple units in both metric and imperial systems.
Are these converters accurate?▼
Yes. All conversion factors are sourced from NIST (National Institute of Standards and Technology) and International System of Units (SI) definitions. Fixed relationships like 1 inch = 2.54 cm are exact by definition. Derived factors use at least six significant digits — far more precision than needed for everyday, educational, or professional use.
How are these converters different from a Google unit conversion?▼
Our dedicated converters load faster than a search results page, work offline after the first visit, and let you compare multiple units in one view — see meters, feet, inches, and centimeters all at once without typing separate queries. No ads, no tracking, no distractions.
Can I use these converters on my phone?▼
Absolutely. Every converter page is responsive and works on phones, tablets, and desktops. The pages are statically generated so they load in under a second, even on slower mobile connections.
Do you store my conversion data?▼
No. Privacy is a core principle at Enodum. All conversions happen entirely in your browser — your inputs never leave your device. We do not track you, store your queries, or serve targeted advertising.
Will you add more converters in the future?▼
Yes. We plan to expand the converter collection with data storage (bits, bytes, megabytes), pressure (pascal, bar, psi), energy (joules, calories, BTU), and more. Check back or follow us for updates.

Need a tool we don’t have yet?

We’re expanding our converter library with data, pressure, energy, and more. In the meantime, explore our full collection of free calculators.

Browse all 52 tools →