Converters
Free unit and format converters — length, weight, temperature, currency, number bases, roman numerals, morse code, Unix timestamps and time zones.
Unit ConverterConvert length, weight, temperature, area, speed and volume — kg to lbs, cm to feet, °C to °F, miles to km and more.Roman Numeral ConverterConvert numbers to Roman numerals and Roman numerals back to numbers (1 to 3,999,999) with a full reference chart.Unix Timestamp ConverterConvert Unix epoch timestamps to human-readable dates and back, in your local time zone and UTC — seconds or milliseconds.Time Zone ConverterConvert any time between time zones — IST to EST, GMT to PST and hundreds more — with automatic daylight-saving handling.Currency ConverterConvert between 30+ world currencies — USD, EUR, GBP, INR, PKR, AED and more — with daily mid-market exchange rates from the ECB.Number Base ConverterConvert numbers between binary, octal, decimal, hexadecimal and any base from 2 to 36 — instantly, with support for huge integers.Morse Code TranslatorTranslate text to Morse code and Morse back to text automatically, play the beeps aloud, and learn the code with a full reference chart.Binary TranslatorTranslate text to binary, hex or decimal bytes and back again. UTF-8 based, so it handles any language — with instant validation and copy.SRT ⇄ VTT ConverterConvert subtitles between SRT and VTT and shift timings by any number of seconds — free, in your browser, with format auto-detect.Markdown to WordConvert Markdown to a Word .docx file — perfect for turning ChatGPT or Claude answers into real documents. Free and in-browser.CM to Feet ConverterFree cm to feet converter — turn centimetres into decimal feet and feet-plus-inches instantly. Works both ways, no signup.CM to Inches ConverterFree cm to inches converter — divide by the exact factor 2.54 to turn centimetres into inches instantly, both directions, no signup.Celsius to Fahrenheit ConverterFree Celsius to Fahrenheit converter using the exact formula °F = °C × 9/5 + 32. Works both ways with an oven and weather table.Cups to ML ConverterFree cups to ml converter — turn US cups into millilitres (1 cup = 236.588 mL) for recipes. Handles half and quarter cups, no signup.Fahrenheit to Celsius ConverterFree Fahrenheit to Celsius converter using the exact formula °C = (°F − 32) × 5/9. Instant, works both ways, no signup.Feet to CM ConverterFree feet to cm converter — turn feet into centimetres with the exact factor 1 ft = 30.48 cm. Works both ways instantly, no signup.Feet to Meters ConverterFree feet to meters converter using the exact factor 1 ft = 0.3048 m. Instant two-way conversion with a common-values table, no signup.GB to MB ConverterFree GB to MB converter — turn gigabytes into megabytes using the binary standard (1 GB = 1024 MB). Instant and two-way, no signup.Gallons to Liters ConverterFree gallons to liters converter — US gallons to litres with the exact factor 3.785411784, plus the UK imperial value. No signup.Inches to CM ConverterFree inches to cm converter — multiply by the exact factor 2.54 to turn inches into centimetres instantly, both directions, no signup.KG to LBS ConverterFree kg to lbs converter — kilograms to pounds with the exact factor 1 lb = 0.45359237 kg, plus a pounds-and-ounces split. No signup.KM to Miles ConverterFree km to miles converter — kilometres to miles with the exact factor 1 mi = 1.609344 km. Instant, two-way, running distances included.LBS to KG ConverterFree lbs to kg converter — pounds to kilograms with the exact factor 1 lb = 0.45359237 kg. Instant two-way conversion, no signup.Liters to Gallons ConverterFree liters to gallons converter — litres to US gallons (÷ 3.785411784) with the UK imperial value shown too. Instant, no signup.MB to GB ConverterFree MB to GB converter — megabytes to gigabytes using the binary standard (1024 MB = 1 GB). Instant two-way conversion, no signup.ML to Cups ConverterFree ml to cups converter — millilitres to US cups (÷ 236.588) with tablespoons shown too. Great for recipes, instant, no signup.Meters to Feet ConverterFree meters to feet converter — metres to decimal feet and feet-plus-inches with the exact factor 1 ft = 0.3048 m. No signup.Miles to KM ConverterFree miles to km converter — miles to kilometres with the exact factor 1 mi = 1.609344 km. Instant, two-way, race distances included.Square Feet to Square Meters ConverterFree square feet to square meters converter — sq ft to m² with the exact factor 0.09290304. Ideal for property listings, no signup.Square Meters to Square Feet ConverterConvert square meters to square feet instantly — 1 m² = 10.764 sq ft. Works both ways, with a reference table for common room and plot sizes.Acres to Square Feet ConverterConvert acres to square feet instantly — 1 acre = 43,560 sq ft exactly. Bidirectional, with a table for common plot sizes from 0.1 to 100 acres.Bar to PSI ConverterConvert bar to PSI instantly — 1 bar = 14.5038 psi. Perfect for tire pressure: 2.2 bar = 31.9 psi. Works both directions with a reference table.Bits to Bytes ConverterConvert bits to bytes instantly — 1 byte = 8 bits. Understand why 100 Mbps internet downloads at 12.5 MB/s. Converts both directions.Degrees to Radians ConverterConvert degrees to radians instantly — radians = degrees × π/180. Shows the π form too: 90° = π/2 ≈ 1.5708 rad. Works both ways.GB to TB ConverterConvert gigabytes to terabytes instantly — 1 TB = 1024 GB (binary). Explains why a 1 TB drive shows only 931 GB in Windows. Bidirectional.Grams to Ounces ConverterConvert grams to ounces instantly — 100 g = 3.53 oz (1 oz = 28.3495 g exactly). Ideal for recipes and shipping. Converts both ways.HP to kW ConverterConvert horsepower to kilowatts instantly — 1 hp = 0.7457 kW, so 100 hp = 74.57 kW. Covers mechanical and metric hp. Works both directions.kW to HP ConverterConvert kilowatts to horsepower instantly — 1 kW = 1.341 hp, so 100 kW = 134.1 hp. Great for EV and engine specs. Converts both ways.km/h to MPH ConverterConvert km/h to mph instantly — 100 km/h = 62.14 mph (1 mile = 1.609344 km exactly). Speed limits and running pace, both directions.MPH to km/h ConverterConvert mph to km/h instantly — 60 mph = 96.56 km/h (1 mile = 1.609344 km exactly). US speed limits to metric, both directions.L/100km to MPG ConverterConvert liters per 100 km to US MPG instantly — mpg = 235.215 ÷ L/100km, so 8 L/100km = 29.4 mpg. Fuel economy both ways.MPG to L/100km ConverterConvert US MPG to liters per 100 km instantly — L/100km = 235.215 ÷ mpg, so 30 mpg = 7.84 L/100km. Fuel economy both directions.Newton Meters to Pound Feet ConverterConvert torque from N·m to lb-ft instantly — 100 N·m = 73.76 lb-ft (1 lb-ft = 1.3558 N·m). For wrench settings and engine specs, both ways.Ounces to Grams ConverterConvert ounces to grams instantly — 1 oz = 28.35 g exactly, 8 oz = 226.8 g. Perfect for American recipes on a metric scale. Both directions.PSI to Bar ConverterConvert PSI to bar instantly — 32 psi = 2.21 bar (1 bar = 14.5038 psi). Tire pressures, compressors and gauges, both directions.Radians to Degrees ConverterConvert radians to degrees instantly — degrees = rad × 180/π, so 1 rad = 57.2958° and π rad = 180°. Works in both directions.Tablespoons to mL ConverterConvert tablespoons to milliliters instantly — 1 US tbsp = 14.79 mL, 2 tbsp = 29.57 mL. Covers US, metric, UK and Australian spoons.Teaspoons to mL ConverterConvert teaspoons to milliliters instantly — 1 US tsp = 4.93 mL, 2 tsp = 9.86 mL. Ideal for recipes and medicine doses. Both directions.Amps to Watts CalculatorConvert amps to watts free — enter current, voltage and power factor for DC, single-phase or three-phase AC. 10A at 230V (PF 0.9) = 2,070W.Watts to Amps CalculatorConvert watts to amps free — enter power, voltage and power factor for DC, single or three-phase AC. 1,000W at 230V (PF 0.9) draws 4.83A.kWh Cost CalculatorCalculate electricity cost from appliance wattage, hours of use and your per-unit rate — kWh consumed plus cost per day, month and year, free.Cooking Measurement ConverterConvert cups, tablespoons, teaspoons, fluid ounces, millilitres and litres for recipes — instant, both-way conversion with a reference table.Data Storage ConverterConvert bits, bytes, KB, MB, GB, TB and PB using both decimal (×1000) and binary (×1024) standards, with a reference table.Density ConverterConvert density between kg/m³, g/cm³, g/mL, kg/L, lb/ft³ and lb/in³ instantly, with both-way results and a reference table.Energy ConverterConvert energy between joules, kilojoules, calories, kilocalories, watt-hours, kWh, BTU and foot-pounds, with a reference table.Force ConverterConvert force between newtons, kilonewtons, kilogram-force, pound-force, ounce-force and dynes, with instant both-way results.Frequency ConverterConvert frequency between hertz, kilohertz, megahertz, gigahertz, terahertz and rpm instantly, with a reference table.Power ConverterConvert power between watts, kilowatts, megawatts, horsepower, metric PS, BTU/h and more, with instant both-way results.Pressure ConverterConvert pressure between psi, bar, pascal, kPa, MPa, atmosphere, torr and inHg instantly, with a reference table.Ring Size ConverterConvert ring sizes between US, UK, EU and Japanese standards, or from diameter/circumference in mm, with a full reference chart.Shoe Size ConverterConvert shoe sizes between US, UK, EU and centimetres for men and women, with a full reference chart. Instant and free.Torque ConverterConvert torque between newton-metres, pound-feet, pound-inches, kilogram-force metres and ounce-inches, with a reference table.