The most comprehensive unit conversion solution for professionals, students, and everyday use
Convert between metric (millimeters, centimeters, meters, kilometers), imperial (inches, feet, yards, miles), nautical (nautical miles, fathoms), astronomical (light years, parsecs, astronomical units), and specialized units (microns, angstroms, points, pixels).
Convert between metric (milligrams, grams, kilograms, metric tons), imperial (ounces, pounds, stones, tons), troy weights (used for precious metals), apothecaries' weights, and scientific units (atomic mass units, solar masses).
Convert between Celsius, Fahrenheit, Kelvin, Rankine, Delisle, Newton, Réaumur, and Rømer scales with precise formulas for each conversion.
Convert between metric (milliliters, liters, cubic meters), US customary (teaspoons, tablespoons, fluid ounces, cups, pints, quarts, gallons), imperial (imperial pints, imperial gallons), cooking measures, and scientific units (cubic centimeters, cubic inches, cubic feet).
Convert between square metric units, square imperial units, acres, hectares, square miles, townships, sections, and circular measurement units.
Convert between kilometers per hour, miles per hour, meters per second, feet per second, knots (nautical miles per hour), Mach number, and speed of light.
Convert between seconds, minutes, hours, days, weeks, months, years, decades, centuries, milliseconds, microseconds, nanoseconds, and other time units including sidereal days.
Convert between bits, bytes, kilobytes, megabytes, gigabytes, terabytes, petabytes, exabytes, zettabytes, yottabytes, with both binary (1024-based) and decimal (1000-based) interpretations.
| Unit | Equivalent in Meters | Common Conversions |
|---|---|---|
| 1 millimeter (mm) | 0.001 m | 10 mm = 1 cm |
| 1 centimeter (cm) | 0.01 m | 100 cm = 1 m |
| 1 meter (m) | 1 m | Base unit |
| 1 kilometer (km) | 1000 m | 1 km ≈ 0.621371 miles |
| 1 inch (in) | 0.0254 m | 12 in = 1 ft |
| 1 foot (ft) | 0.3048 m | 3 ft = 1 yd |
| 1 yard (yd) | 0.9144 m | 1760 yd = 1 mile |
| 1 mile (mi) | 1609.344 m | 1 mi ≈ 1.60934 km |
| 1 nautical mile | 1852 m | Used in marine/aviation navigation |
| Conversion | Formula |
|---|---|
| Celsius to Fahrenheit | °F = (°C × 9/5) + 32 |
| Fahrenheit to Celsius | °C = (°F - 32) × 5/9 |
| Celsius to Kelvin | K = °C + 273.15 |
| Kelvin to Celsius | °C = K - 273.15 |
| Fahrenheit to Kelvin | K = (°F + 459.67) × 5/9 |
| Kelvin to Fahrenheit | °F = (K × 9/5) - 459.67 |
| Unit | Binary (Bytes) | Decimal (Bytes) | Difference |
|---|---|---|---|
| 1 Kilobyte (KB) | 1,024 | 1,000 | 2.4% |
| 1 Megabyte (MB) | 1,048,576 | 1,000,000 | 4.9% |
| 1 Gigabyte (GB) | 1,073,741,824 | 1,000,000,000 | 7.4% |
| 1 Terabyte (TB) | 1,099,511,627,776 | 1,000,000,000,000 | 10.0% |
Choose the type of measurement you want to convert from the dropdown menu. The available categories include length, weight, temperature, volume, area, speed, time, digital storage, and more specialized units.
Type the numerical value you want to convert in the input field. You can enter whole numbers, decimals, or scientific notation (e.g., 1.23e4 for 12,300).
Choose the unit of measurement for the value you entered. The dropdown will show all available units for the selected category.
Choose the unit you want to convert to. This can be any unit within the same category.
Click the "Convert" button to instantly see the result. The converted value will appear below the button with high precision.
Q: How accurate are the conversions?
A: Our conversions are extremely accurate, using up-to-date conversion factors from international standards organizations.
Q: Do you support historical or obsolete units?
A: Yes, we include many historical units like the cubit, furlong, stone, and archaic temperature scales.
Q: How do you handle different measurement systems?
A: Our tool seamlessly converts between all major measurement systems including metric (SI), US customary, imperial (UK), and specialized systems.
Q: Can I convert between units in different categories?
A: Direct conversions between different categories (like length to area) aren't mathematically meaningful without additional context.
Q: How current are your conversion factors?
A: We regularly update our conversion database to reflect any changes in measurement standards.