Convert between metric, imperial, and scientific units instantly — length, weight, temperature, area, volume, speed, energy, and more.
Tooloogle's unit converters give you precise, instant conversions between every common measurement system used around the world. Whether you're translating a recipe from cups to grams, sizing a parcel for international shipping, double-checking engineering specs, or helping a child with science homework, the right converter is one click away.
Convert millimetres, centimetres, metres, and kilometres to inches, feet, yards, and miles — plus nautical units (nautical miles, fathoms), astronomy units (light years, parsecs), and typography units (points, picas). Useful for construction, travel, engineering drawings, and DIY projects.
Switch between grams, kilograms, tonnes, ounces, pounds, and stones. Convert troy ounces for precious metals, carats for gemstones, and atomic mass units for chemistry. Cooking conversions are accurate to the gram so your baking measurements are never off.
Convert between Celsius, Fahrenheit, Kelvin, and Rankine with full precision. Includes preset hints for boiling point, freezing point, body temperature, and oven settings — handy for cooks, scientists, and travellers crossing climate zones.
Translate millilitres, litres, cubic metres, fluid ounces, cups, pints, quarts, and gallons (US and Imperial — they're different!). Includes barrel and teaspoon conversions for industrial and culinary use.
Switch between square metres, hectares, acres, square feet, and square miles. Real-estate professionals and farmers rely on these for parcel sizing and yield calculations.
Convert km/h, mph, m/s, knots, and Mach numbers for driving, sailing, aviation, and physics problems.
Translate joules, calories, BTU, kWh, watts, horsepower, pascals, bars, psi, and atmospheres. Engineers, HVAC technicians, and energy auditors use these daily.
Convert bits, bytes, kilobytes, megabytes, gigabytes, terabytes, and petabytes — using both decimal (1000-based) and binary (1024-based) standards. Network engineers and cloud architects can also convert between Mbps, MB/s, and Gbps.
Switch seconds, minutes, hours, days, weeks, months, years, decades, and centuries. Useful for project planning, billable-hours calculations, and historical research.
Convert degrees, radians, gradians, hertz, kilohertz, megahertz, and gigahertz for physics, electrical engineering, and audio work.
Each converter is hand-tuned for its domain. We don't just multiply by a constant — where rounding matters (cooking, medicine), we surface it; where precision matters (engineering, finance), we preserve up to fifteen significant digits. You can swap source and target units with one click, copy results to clipboard, and share a permalink that pre-fills the values for a colleague.
SI units, NIST guidelines, and international cooking conventions are followed strictly. Edge cases like the difference between US and Imperial gallons, troy versus avoirdupois ounces, and short versus long tons are handled correctly and labelled clearly so you don't get caught out.
Conversions happen instantly in your browser. No data is sent anywhere. No login. No advertising trackers reading your shipping dimensions or chemical formulas.
International shoppers convert clothing sizes and shipping weights. Engineers convert torque, pressure, and material density. Cooks convert recipes between metric and imperial. Travellers convert kilometres to miles for road trips. Students convert physics homework. Medical professionals convert dosages between mg, mcg, and IU. DIY enthusiasts convert lumber dimensions for projects.
Always confirm the source unit type — "ounce" can mean fluid ounce (volume), avoirdupois ounce (weight), or troy ounce (precious metals). Double-check whether you need US or Imperial gallons. For temperature, remember that Celsius and Fahrenheit don't share a zero point, so simple multiplication won't work. Use the inline notes under each converter when something seems off.
Bookmark the converters you use most so they load with one click. Most converters support keyboard shortcuts for power users — type the value, press Tab, and you're done. Embed-friendly URLs make it easy to share specific conversions in chat, email, or documentation.