Metric, Imperial & U.S. Units
Convert seamlessly between meters, feet, inches, kilograms, pounds, Celsius, Fahrenheit, and more.
Convert length, area, weight, volume, temperature, speed, and time between metric, U.S. customary, and Imperial units. Free and private in-browser tool.
Select the measurement category (Length, Weight, Temperature, Volume, Area, Speed).
Choose your starting unit and target unit from the dropdown lists.
Enter the number to see instant, bidirectional conversion results.
Convert seamlessly between meters, feet, inches, kilograms, pounds, Celsius, Fahrenheit, and more.
Accurate decimal conversion formulas suitable for engineering, cooking, and travel.
Switch units or swap directions with one click for immediate calculations.
Length, Mass/Weight, Temperature, Volume/Capacity, Area, Speed, Pressure, and Energy.
Select Temperature, enter Celsius on the left, and Fahrenheit appears on the right using the standard (C * 9/5) + 32 formula.
Yes. Volume covers milliliters, liters, cups, tablespoons, teaspoons, and fluid ounces.
Everyday Utilities
Convert L/100 km, km/L, U.S. MPG, and Imperial MPG, compute gas mileage from odometer readings, and estimate trip fuel costs.
Standard and scientific online calculator with calculation history and keyboard shortcuts.
Calculate percentage change, difference, discounts, and common percentage formulas.
Convert between 150+ world currencies with live, real-time exchange rates.
Remove repeated lines while preserving their first occurrence.
Sort lines naturally, alphabetically, or by length.