Convert between units of length, area, volume, mass, and temperature. 50+ units, all-in-one table, and reference points in one tool.
The measurement converter handles five categories — length, area, volume, mass, and temperature — with over 50 units total. Switch between metric and Imperial, cooking and scientific, or any combination in a single interface.
Pick a category, enter a value, and choose "from" and "to" units. The result appears instantly along with the SI base value and several other common units. A full conversion table shows every unit in the category simultaneously so you can copy whichever you need.
Temperature mode handles the non-linear Celsius↔Fahrenheit conversion correctly and includes Kelvin and Rankine. A reference table lists key temperature points from absolute zero to iron's melting point. This makes the tool practical for homework, engineering estimates, kitchen use, and day-to-day unit checks in one place. It is particularly useful when documents, invoices, and specs mix different unit systems and require quick verification before decisions are made by teams with different regional conventions.
Having separate converters for length, mass, volume, area, and temperature means five bookmarks. This all-in-one tool covers them in a single page, with a full table of every unit so you never miss a conversion and can cross-check values quickly across calculations, reports, shared spreadsheets, and operational checklists used by distributed teams.
Linear units: result = value × (fromFactor / toFactor). Temperature: °F = °C × 9/5 + 32. K = °C + 273.15. °R = K × 9/5.
Result: 1 meter = 3.28084 feet
1 m × (1/0.3048) = 3.28084 ft. The factor 0.3048 is the exact definition of a foot.
The metric system was introduced during the French Revolution (1795) to replace hundreds of local unit systems. The meter was originally defined as one ten-millionth of the distance from the equator to the North Pole. Today it is defined by the speed of light in a vacuum.
Celsius and Fahrenheit cross at −40° (the only temperature identical on both scales). Water freezes at 0 °C / 32 °F and boils at 100 °C / 212 °F. Kelvin starts at absolute zero with no negative values, making it the preferred scale in science.
US recipes use cups, tablespoons, and teaspoons while European recipes use grams and milliliters. 1 cup of flour ≈ 125 g. 1 cup of sugar ≈ 200 g. 1 cup of butter ≈ 227 g. For liquids, 1 cup = 236.6 mL.
1 meter = 3.28084 feet. 1 foot = 0.3048 meters (exact by definition).
Multiply by 9/5 and add 32. Example: 100 °C × 9/5 + 32 = 212 °F.
1 US gallon = 3.785 liters. 1 Imperial gallon = 4.546 liters. The Imperial gallon is about 20% larger.
1 ounce = 28.3495 grams. Divide grams by 28.35 to get ounces.
1 nautical mile = 1,852 meters = 1.15078 statute miles. It equals one minute of latitude on the Earth.
History: different cultures developed independent systems. SI (metric) is now the international standard, but the US and UK still use Imperial/customary units in daily life.