Everyday engineering units
Common Unit Converters
Core unit converters for distance, mass, time, and velocity used across engineering, physics, science, and everyday calculations.
Converters
4 unit converters
Distance Unit Converter
Convert length and distance units including millimeters, meters, kilometers, inches, feet, yards, and miles.
Mass Unit Converter
Convert mass units including grams, kilograms, ounces, pounds, tons, and tonnes.
Time Unit Converter
Convert seconds, minutes, hours, days, weeks, and common time units for engineering calculations.
Velocity Unit Converter
Convert speed and velocity units such as m/s, km/h, mph, ft/s, and knots.
About this category
Using Common converters
Core unit converters for distance, mass, time, and velocity used across engineering, physics, science, and everyday calculations. Use these converters for quick checks, study, design estimates, and unit cleanup before calculations. Always confirm final values, units, and significant figures before using results in released engineering work.