📐Unit Converters
Free unit converters for length, weight, temperature, area, speed, volume and digital storage. Precise, internationally-defined conversions, instantly.
📏 Length Converter Free length converter for metres, km, miles, feet, inches, cm, mm and yards. Convert metric to imperial instantly with exact factors and a quick chart. 🌡️ Temperature Converter Free temperature converter for Celsius, Fahrenheit and Kelvin. Convert C to F, F to C, C to K and back instantly, with exact formulas, fever and oven charts. ⚖️ Weight Converter Free weight converter for kg to lbs, pounds to kg, grams to ounces and stone to pounds. Switch metric and imperial mass units with exact factors and charts. 📐 Angle Converter Free angle converter for degrees, radians, gradians, arcminutes, arcseconds, milliradians, mils and revolutions. Type any value and every unit updates instantly. 📐 Area Converter Free area converter for square feet to square meters, acres to hectares, square miles and more. Type any unit and the rest update instantly with exact factors. 🔢 ASCII to Binary Converter Free ASCII to binary converter: turn any text into 8-bit binary instantly. Type Hi to get 01001000 01101001, with per-character codes, bit count, and byte count. 🔤 ASCII Code to Text Converter Free ASCII to text converter: paste decimal ASCII codes separated by spaces or commas and get readable text instantly. So 72 105 decodes to Hi, with a per-code table. 🛞 Bar to PSI Converter Free bar to psi converter. Convert bar to pounds per square inch instantly (1 bar = 14.5038 psi), plus kPa, atm, and a tire pressure reference table. 🔤 Binary to ASCII Converter Free binary to ASCII converter: paste 8-bit binary groups or one long string to decode readable text instantly. See each byte, its decimal code, hex, and character. 🔟 Binary to Decimal Converter Free binary to decimal converter: type any binary number to get the decimal value instantly, plus a positional breakdown, bit count, and the hex and octal equivalents. 🔢 Binary to Hex Converter Free binary to hex converter. Type any binary number (0s and 1s) and get the exact hexadecimal and decimal value instantly, with nibble grouping shown. 🔢 Binary to Octal Converter Free binary to octal converter: paste any binary number to get the octal value instantly, plus the decimal equivalent and a full 3-bit grouping breakdown. 🌡️ Celsius to Fahrenheit Converter Convert Celsius to Fahrenheit instantly, and back again. Type any value and the other unit updates live using the exact F = C x 9/5 + 32 formula. Free and accurate. 📏 CM to Feet Converter Free cm to feet converter. Convert centimeters to feet and inches instantly (170 cm = 5 ft 6.9 in), plus a decimal feet value and a height reference table. 📏 cm to inches Converter Convert cm to inches instantly with the exact 1 in = 2.54 cm factor. Type centimeters or inches and it converts both ways, plus a feet and inches readout. 📐 CM to MM Converter Free cm to mm converter. Convert centimeters to millimeters instantly with the exact 1 cm = 10 mm factor, plus meters and inches, and a reference chart. 🥄 Cooking Measurement Converter Free cooking converter for cups, tablespoons, teaspoons, fluid ounces, pints, quarts, ml and litres. Instant US customary kitchen measurement conversions. 🔄 CSV to XML Converter Convert CSV to XML free in your browser. Paste comma-separated rows and get clean, escaped, pretty-printed XML with a tag per column. Copy or download it fast. 🥣 Cups to Grams Converter Free cups to grams converter using real ingredient density. Convert flour, sugar, butter, honey and more from cups to grams (and back) instantly and accurately. 💾 Data Storage Converter Free data storage converter for bits, bytes, KB, MB, GB, TB and PB. Convert MB to GB or bytes to KB instantly in decimal (1000) and binary (1024) units. 📶 Data Transfer Rate Converter Free data transfer rate converter. Instantly turn Mbps to MB/s, kbps, Gbps and bytes per second, and see every bandwidth unit at once with accurate math. 🔢 Decimal to Binary Converter Convert decimal to binary instantly with a full step-by-step division-by-2 table. See the bit count, hex and octal too. BigInt-exact for very large numbers. # Decimal to Hex Converter Convert decimal to hex instantly. Enter any non-negative integer to get the uppercase hex, 0x prefix, division steps, plus binary and octal. Free, fast, exact. 🔢 Decimal to Octal Converter Convert any decimal number to octal instantly with exact division-by-8 steps shown. Free decimal to octal converter with BigInt precision and one-click copy. 🧪 Density Converter Free density converter for kg/m³, g/cm³, g/ml, lb/ft³, and lb/in³. Type any value and every unit updates instantly, with charts, examples, and factors. ⚡ Energy Converter Free energy converter for joules, calories, kilocalories, kWh, watt-hours, BTU, electronvolts and foot-pounds. Type once and every unit updates instantly. 🌡️ Fahrenheit to Celsius Converter Convert Fahrenheit to Celsius instantly with the exact 5/9 formula. Free F to C converter with a full chart, oven and gas mark tables, worked examples and FAQs. 📏 Feet to CM Converter Free feet to cm converter. Convert feet to centimeters (and back) instantly. 1 ft = 30.48 cm. See a feet and inches breakdown plus a full height chart. 📏 Feet to Meters Converter Convert feet to meters instantly with exact results using the 0.3048 factor. Free calculator with a feet-and-inches option and worked examples for quick checks. 🪝 Force Converter Free force converter for newtons, kilonewtons, dyne, kgf, lbf and ozf. Convert newtons to pounds-force or kgf to N instantly, with exact factors and tables. 📡 Frequency Converter Free frequency converter for Hz, kHz, MHz, GHz, THz, rpm and rad/s. Enter any value and every unit updates instantly through hertz. Fast, accurate, no signup. ⛽ Fuel Economy Converter Free fuel economy converter for MPG (US), MPG (UK), L/100km and km/L. Type any value to convert instantly, with worked examples, benchmarks and charts. 🛢️ Gallons to Liters Converter Convert gallons to liters instantly, both ways. See the exact US gallon (3.78541 L) and UK imperial gallon (4.54609 L) results together, free in your browser. 💽 GB to MB Converter Convert GB to MB or MB to GB instantly, in binary (1 GB = 1024 MB) or decimal (1 GB = 1000 MB). Free gb to mb converter that runs entirely in your browser. 🗄️ GB to TB Converter Convert GB to TB or TB to GB instantly, in binary (1 TB = 1024 GB) or decimal (1 TB = 1000 GB). Free gb to tb converter that runs entirely in your browser. ⚖️ Grams to Cups Converter Free grams to cups converter using real ingredient density. Convert flour, sugar, butter, rice and more between grams and US cups, both ways, instantly and accurately. 🧪 Grams to ML Converter Free grams to ml converter using real ingredient density. Convert water, milk, honey, oil, sugar, flour and more between grams and milliliters instantly. 🔣 Hex to Binary Converter Convert hex to binary instantly: free converter with nibble breakdown, bit count, decimal/octal results, plus two's complement notes and a reference chart. 🔢 Hex to Decimal Converter Convert hex to decimal instantly with the full positional math shown step by step. Handles 0x prefixes, negative hex, and shows binary and octal too, free. 🔢 Hex to Octal Converter Free hex to octal converter: get the octal value instantly, plus decimal and binary equivalents and a digit-by-digit breakdown for any hexadecimal number. 🔤 Hex to Text Converter Convert hex to text instantly in your browser. Paste hexadecimal, see each byte pair decoded to its character, plus an ASCII table and worked examples. ⏱️ Hours to Minutes Converter Convert hours to minutes instantly with decimal and h:mm results. Type 2.5 hours and get 150 minutes. Free, accurate, and runs entirely in your browser. 💡 Illuminance Converter Illuminance converter for lux, foot-candles, phot, nox and kilolux. Get instant, exact conversions plus lighting level charts, formulas and worked examples. 📏 Inch to Feet Converter Free inch to feet converter that turns inches into feet instantly, with a feet-and-inches breakdown, a reference chart, and the exact formula explained. 📏 inches to cm Converter Convert inches to cm instantly with this free calculator. Includes the exact 2.54 factor, a fraction-to-cm chart, worked examples, and reverse cm to inches. 📐 Inches to Pixels Converter Convert inches to pixels and pixels to inches at any DPI or PPI. Uses pixels = inches x DPI with presets for 96, 72, 150 and 300 DPI, plus print size charts. 👖 Jeans Size Converter Free jeans size converter for US, EU and UK sizing, men and women. Pick your size for the instant equivalent, plus letter sizes, inseam and full charts. 📅 Julian Date Converter Convert any calendar date to its Julian day-of-year, 5-digit YYDDD code, and 7-digit YYYYDDD code instantly, or turn a day-of-year back into a full date. 💽 KB to GB Converter Convert KB to GB or GB to KB free with this kb to gb converter. Choose binary (1,048,576 KB per GB) or decimal (1,000,000 KB per GB) for instant results. 💾 KB to MB Converter Convert KB to MB or MB to KB instantly, in binary (1 MB = 1024 KB) or decimal (1 MB = 1000 KB). Free kb to mb converter that runs entirely in your browser. ⚖️ kg to lbs Converter Convert kg to lbs and lbs to kg instantly with the exact 2.2046226218 factor. Type in either box for accurate kilograms to pounds results, both directions. 🛣️ km to Miles Converter Convert km to miles instantly with the exact factor 1 mile = 1.609344 km. Works both ways, kilometers to miles and miles to km, with charts and worked examples. 🚗 KMH to MPH Converter Convert kmh to mph instantly with the exact 1 mph = 1.60934 km/h factor. Type either speed and the other updates live, plus a common speeds reference chart. ⚖️ lbs to kg Converter Convert lbs to kg instantly with the exact 0.45359237 factor. Type pounds or kilograms and the other updates live. Works both ways with a free conversion chart. 🛢️ Liters to Gallons Converter Free liters to gallons converter. Convert liters to US gallons instantly using the exact 3.78541 factor, plus the UK imperial gallon shown side by side. 💾 MB to GB Converter Free MB to GB converter with binary (1024) and decimal (1000) modes. Convert megabytes to gigabytes or gigabytes to megabytes instantly, both directions. 💾 MB to KB Converter Convert MB to KB or KB to MB instantly, in binary (1 MB = 1024 KB) or decimal (1 MB = 1000 KB). Free mb to kb converter that runs entirely in your browser. 📐 Meters to Feet Converter Free meters to feet converter. Convert meters to feet instantly using the exact 3.28084 factor, see the feet and inches breakdown, and convert feet back to meters. 📏 Miles to km Converter Convert miles to km instantly with the exact 1.609344 factor. Type miles or kilometers and it works both ways at once, with charts, formulas and examples. 🕐 Military Time Converter Free military time converter. Switch between 12-hour AM/PM and 24-hour military time both ways, see how each time is read aloud, and use the full conversion chart. ⏱️ Minutes to Hours Converter Free minutes to hours converter. Enter minutes to get decimal hours (90 min = 1.5 h) and h:mm format (1:30). Works both ways, instant, and 100% in your browser. 🥛 ML to Cups Converter Convert ml to cups instantly with this free two-way calculator. Enter milliliters or cups and get accurate US cup, tablespoon, and fluid ounce results. 💧 ML to Grams Converter Free ml to grams converter using real ingredient density. Convert water, milk, honey, oil, sugar and more between ml and grams instantly, in both directions. 🥤 ML to OZ Converter Free ml to oz converter. Convert milliliters to US fluid ounces (and back) instantly using the exact 29.5735295625 ml factor, plus a handy size reference table. 🧪 mL to oz Converter Convert mL to oz instantly with the exact US fluid ounce factor. Type milliliters or fluid ounces and this free converter works both ways in real time. 🔧 Nm to Ft-Lbs Converter Free Nm to ft lbs converter changes newton metres to pound-feet torque instantly, both ways. Enter any value, see the exact result, plus a full reference table. 🔢 Octal to Binary Converter Free octal to binary converter. Type any octal number (base 8) and get the exact binary and decimal value instantly, with no length limit and one-click copy. 🔟 Octal to Decimal Converter Free octal to decimal converter: type any base 8 number to get the decimal value instantly, plus a positional breakdown, digit count, and the hex and binary equivalents. 🔁 Octal to Hex Converter Free octal to hex converter: enter any base 8 number to get the hexadecimal value instantly, plus the decimal and binary equivalents and a clear step by step breakdown. 🧴 OZ to ML Converter Free oz to ml converter: 8 fl oz = 236.59 ml. Uses the exact US factor (29.5735295625 ml per oz), works both ways, plus a bottle size chart and worked examples. 🥤 oz to mL Converter Convert oz to mL instantly with the exact factor (1 fl oz = 29.5735 mL). Works both ways, oz to mL and mL to oz, with a chart, examples and quick presets. 📏 Pixels to Inches Converter Free pixels to inches converter. Switch between px, inches and cm at 72, 96, 150 or 300 DPI, or enter a custom resolution. Two-way conversion that updates instantly. ⚡ Power Converter Free power converter for watts, kilowatts, megawatts, horsepower, metric horsepower, BTU per hour and ft-lb/s. Type any field and the rest update instantly. 🌡️ Pressure Converter Free pressure converter for psi to bar, pascal to psi, kPa, atm and mmHg (torr). Type in any field and every other unit updates instantly, all in your browser. 📐 PX to Inches Converter Free px to inches converter. Enter pixels to get inches at 72, 96, 150 or 300 DPI, or go the other way. Also shows cm, mm and points instantly. 🍳 Recipe Converter Free recipe converter that scales any recipe up or down by servings. Paste your ingredient list, set old and new servings, and get scaled amounts instantly. 💍 Ring Size Converter Free ring size converter: convert between US, UK, EU ring sizes plus inner diameter and circumference in mm using an accurate built-in ring size chart. 🏛️ Roman Numeral Converter Free Roman numeral converter. Turn any number from 1 to 3999 into Roman numerals, or convert Roman numerals back to a number, with instant two-way validation. 👟 Shoe Size Converter Free shoe size converter for men and women: convert US to EU, UK and CM foot length using standard size charts to quickly find your fit across brands. 🚀 Speed Converter Free speed converter for mph, km/h, knots, m/s and ft/s. Type in any field and every other unit updates instantly using exact, standard conversion factors. 🎬 SRT to VTT Converter Free SRT to VTT converter. Paste SubRip subtitles and get valid WebVTT instantly. Adds the WEBVTT header, fixes timestamps, copy or download a .vtt file. 👣 Steps to Miles Calculator Free steps to miles calculator. Convert any step count to miles and kilometres using your height, pace and stride. See steps per mile and how far 10,000 steps is. 🏊 Swim Time Converter Free swim time converter for SCY, LCM and SCM course conversions. Enter a time as MM:SS.ss, pick the distance and course, and get an approximate converted time instantly. 💾 TB to GB Converter Convert TB to GB or GB to TB instantly, in binary (1 TB = 1,024 GB) or decimal (1 TB = 1,000 GB). Free tb to gb converter that runs entirely in your browser. 🔤 Text to ASCII Code Converter Free text to ASCII converter: turn any text into ASCII decimal codes instantly. Type Hi to get 72 105, choose space, comma, or newline separators, and copy the result. 🔡 Text to Hex Converter Free text to hex converter: paste any text to get its hexadecimal code instantly. So Hi becomes 48 69, with a per-character breakdown, byte count, and copy button. ⏱️ Time Converter Free time converter: switch between milliseconds, seconds, minutes, hours, days, weeks, and years. Type in any field and every other unit updates instantly. 🛞 Tire Size Calculator Free tire size calculator: enter width, aspect ratio and rim to get diameter, sidewall, circumference and revs per mile or km, plus a speedometer comparison. 🔧 Torque Converter Free torque converter: switch between N·m, kN·m, ft·lb, in·lb and kgf·m. Type any value and every other unit updates instantly using exact conversion factors. 🥄 Teaspoons to Grams Converter Free tsp to grams converter using real ingredient density. Convert water, milk, honey, oil, sugar and more between teaspoons and grams instantly, in both directions. 🧪 Volume Converter Free volume converter for liters to gallons, ml to cups, tablespoons and fluid ounces. Type in any unit and the rest update instantly with exact US factors. 🎬 VTT to SRT Converter Free VTT to SRT converter. Paste WebVTT subtitles and get clean SRT in seconds. Removes the header and NOTE blocks, renumbers cues, fixes timestamps. No upload. 🔌 Watts to Amps Converter Free watts to amps converter using amps = watts / volts. Enter power and voltage for instant current, plus amps to watts and power factor for AC motors. 🔌 Wire Gauge Converter Free wire gauge converter: turn any AWG number into conductor diameter in mm and inches plus cross-section area, or measure a wire to find its nearest gauge. 123 Words to Numbers Converter Free words to numbers converter that turns written number words like one thousand two hundred thirty four into digits (1,234) instantly, with decimals and negatives. 🔀 XML to CSV Converter Free XML to CSV converter. Paste XML with a repeating element and get a clean, properly quoted CSV table you can copy or download. Runs in your browser, nothing uploaded. 📐 Yards to Meters Converter Convert yards to meters instantly with this free calculator. Uses the exact 0.9144 factor, a ready-made chart, worked examples, and reverse meters to yards.
Metric or imperial, the right conversion should be exact, not a rough guess. Our converters use the internationally-defined factors, such as 1 inch being exactly 2.54 cm, so the only rounding is the precision you choose.
Type a value in any unit and every other unit updates at once. Pick a converter below to get started.