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Unit Converter
Convert between units of length, weight, temperature, and time. Type in either field for instant bidirectional conversion.
Quick Reference
Why use a unit converter?
Whether you are cooking with international recipes, engineering across measurement systems, or studying science, quick unit conversion saves time and prevents costly errors. This tool handles all math in your browser with no data sent anywhere.
Common conversion tasks
Travel & shipping
Convert miles to kilometers, inches to centimeters for packages and road trips.
Cooking & recipes
Switch between ounces, grams, cups, and liters for international recipes.
Science & study
Temperature, time, and metric conversions for homework and lab work.
Frequently Asked Questions
How do I convert between units?
Select a category tab (Length, Weight, Temperature, Time), choose your source and target units, then type a value in either input field. The conversion updates instantly.
Does the converter work bidirectionally?
Yes. You can type in either the "From" or "To" field and the other field updates automatically. This makes it easy to convert in either direction without switching dropdowns.
How is temperature conversion different?
Temperature conversions use specific formulas rather than simple multiplication factors. For example, Celsius to Fahrenheit uses (C × 9/5) + 32, and Kelvin to Celsius uses K − 273.15. This tool handles all formulas automatically.