calculate UNIT CONVERTER

Free Online Unit Converter – Distance, Weight, Temperature & More

Welcome to the Invoice Luxe Free Unit Converter – a fast, accurate and completely free online tool for converting measurements. Convert km to miles, kg to lbs, Celsius to Fahrenheit, liters to gallons, and dozens of other units instantly. No signup, no ads, works offline after first load.

Whether you need a quick speed converter, a data storage converter, or everyday conversions for travel, cooking, science or logistics, this tool delivers precise results in one click.

8 Categories Covered

• Distance & Length: Convert km to miles, meters to feet, yards, inches, nautical miles and centimeters.
• Weight & Mass: Switch between kg to lbs, grams, ounces, metric tons and stones.
• Temperature: Convert Celsius to Fahrenheit and Kelvin with precise formulas.
• Volume: Convert liters to gallons, milliliters, fluid ounces, cups and pints.
• Speed: Convert km/h, mph, m/s, knots and ft/s.
• Area: Convert square meters, hectares, acres, square miles and more.
• Pressure: Convert bar, psi, atm, pascal and mmHg.
• Data Storage: Convert Bytes, KB, MB, GB and TB.

How to use this free unit converter

1. Select a category (Distance, Weight, Temperature…). 2. Enter the value. 3. Choose the FROM and TO units (or use the swap button). 4. Get the result instantly. Use the quick presets for the most popular conversions such as km to miles or kg to lbs.