All Converters

Convert between degrees, radians, and gradians for geometry and engineering.

Convert between modern area units like square meters, square feet, acres, and hectares, as well as a rich variety of historical and specialized land measurements from around the globe.

Convert belt sizes based on waist measurement.

Convert bra sizes between US, UK, EU, and measurement-based systems.

Convert cooking and baking measurements across a vast range of units: from common volume (cups, ml, tsp, tbsp, oz) and weight (grams, ounces, pounds) to oven temperatures (Celsius, Fahrenheit, Kelvin), plus fascinating historical and specialized units like gills, drams, stone, troy ounces, Réaumur, and Rankine. Perfect for any recipe, anywhere in the world, across time!

Get real-time exchange rates for global currencies using ExchangeRate-API.com.

Convert between bits, bytes, kilobytes, megabytes, gigabytes, terabytes, and more.

Convert between common energy units like joules, calories, kilowatt-hours, and BTUs. It also supports specialized and historical units such as electronvolts, therms, barrels of oil equivalent, atomic units of energy, Thermie, Ton of Refrigeration, Foot-poundal, Tonne of Coal Equivalent, Kilopond-meter, and Cubic Foot of Natural Gas.

Important Note: This guide helps you understand common eyewear dimensions (lens width, bridge, temple length) and how they relate to fit. Always refer to specific brand measurements and consider trying on frames for best fit.

Convert glove sizes based on hand circumference or length.

Convert hat sizes based on head circumference.

Convert hosiery (tights, stockings) sizes typically based on height and weight.

Important Note: This guide helps you understand common jewelry dimensions (length, drop, diameter) for necklaces, bracelets, and earrings. Always refer to specific brand measurements and consider personal fit.

Convert children’s general apparel sizes.

Convert children’s shoe sizes. Note that these are general guidelines, and kids’ sizing can be particularly variable between brands and age groups. For a precise fit, always refer to specific brand charts.

Convert children’s swimwear sizes.

Convert children’s underwear sizes between age-based, alpha, and body measurements.

Convert between a vast array of measurement units including length, weight, volume, area, speed, energy, and pressure, spanning modern, historical, and specialized units from around the globe.

Convert men’s general apparel sizes (suits, shirts, pants).

Convert men’s shoe sizes. Note that these are general guidelines, as sizing can vary between brands and regions. For a precise fit, always refer to specific brand charts.

Convert men’s swimwear sizes.

Convert men’s underwear sizes (e.g., briefs, boxers) between alpha, numeric, and body measurements.

Convert numbers between a wide array of numeral systems, including standard decimal, binary, octal, and hexadecimal, as well as less common and historical bases like ternary, duodecimal, vigesimal (Mayan), sexagesimal (Babylonian number system converter), Roman Numerals, Base 36, and Base 64.

Convert between a comprehensive range of pressure units, including PSI, kilopascals, atmospheres, and bar. It also supports specialized and historical units such as Torr, millimeters of mercury, inches of water, technical atmospheres, pounds per square foot, Megapascals, Hectopascals, and Microbars. Perfect for engineering, meteorology, medical, and scientific applications.

Convert ring sizes between different international standards.

Important Note: This guide helps you understand common scarf and shawl dimensions (length, width) and their typical shapes and size categories. Consider the material and styling goals for the best choice.

Convert sock sizes between different shoe size systems and foot length.

Convert between a vast array of speed units, from common miles per hour, kilometers per hour, meters per second, and knots, to fascinating historical, obscure, and specialized measurements like furlongs per fortnight, Mach, leagues per hour, light-years per year, micrometers per second, and Roman paces per minute. Perfect for travel, engineering, scientific, and even geological applications.

Instantly convert temperatures between Celsius, Fahrenheit, Kelvin, and a wide array of historical scales like Rankine, Delisle, Newton, Réaumur, Rømer, and Leiden.

Convert time units, time zones, and calculate duration.

Convert between Newton-meters, pound-force-feet, and a fascinating array of historical and specialized torque units for diverse applications.

Convert between liters, gallons, cubic meters, fluid ounces, and a wide array of historical and ancient volume units.

Convert between a vast array of weight and mass units, including modern, historical, and ancient measurements from across the globe.

Convert women’s general apparel sizes (dresses, tops, bottoms).

Convert women’s shoe sizes. Note that these are general guidelines, as sizing can vary between brands and regions. For a precise fit, always refer to specific brand charts.

Convert women’s swimwear sizes.

Convert women’s underwear sizes (e.g., panties, briefs) between alpha, numeric, and body measurements.