Conversions calculators
Fast, accurate unit and measurement converters — length, weight, temperature, volume and beyond.
Area Converter
Free area converter between metric (mm², cm², m², ha, km²) and imperial (in², ft², yd², acre, mi²). Uses exact international definitions. Works in your browser.
Cooking Measurement Converter
Free cooking measurement converter — US cups, tablespoons, teaspoons, fl oz, mL, L, grams, and ounces. US customary values. Runs in your browser.
Data Storage Converter (KB, MB, GB, TB, KiB, MiB…)
Free digital storage converter — bits, bytes, KB, MB, GB, TB, PB and the binary IEC versions (KiB, MiB, GiB, TiB). Clears up the 1000-vs-1024 confusion.
Length Converter
Free length / distance converter between metric (mm, cm, m, km) and imperial (in, ft, yd, mi) units. Uses the international definitions. Works in your browser.
Speed Converter
Free speed converter — km/h, mph, m/s, knots, ft/s and more. Uses exact conversion factors. Works in your browser.
Temperature Converter
Free temperature converter between Celsius (°C), Fahrenheit (°F) and Kelvin (K). Works in your browser, no sign-up.
Time Zone Converter
Free time zone converter — pick a date, time and two cities and get the exact local time in the other zone. Daylight saving handled automatically. Runs in your browser.
Volume Converter
Free volume converter between metric (mL, L, m³) and US / UK customary (fl oz, cup, pint, quart, gallon). Includes US tablespoons and teaspoons. Runs in your browser.
Weight / Mass Converter
Free weight and mass converter between metric (mg, g, kg, t) and imperial (oz, lb) units. Uses the exact international avoirdupois definitions. Works in your browser.