Unit Converters
Free unit converters for currency, length, weight, temperature, time, data storage, cooking measurements, shoe sizes, timezones, electrical units, and more.
Currency Converter
Free currency converter online. Convert between 30 currencies with up-to-date exchange rates, instant results, and multi-currency view. Runs in your browser.
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Length Converter
Free length converter online. Convert between 13 units including meters, feet, miles, inches, yards, and light years with instant results. Runs in your browser.
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Weight Converter
Free weight converter online. Convert between 12 units including kilograms, pounds, ounces, stones, tons, and carats with instant results. Runs in your browser.
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Temperature Converter
Free temperature converter online. Convert between Celsius, Fahrenheit, Kelvin, and Rankine with instant results and all four scales at once. Runs in your browser.
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Volume Converter
Free volume converter online. Convert between 14 units including liters, gallons, cups, fluid ounces, tablespoons, and cubic meters. Runs in your browser.
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Area Converter
Free area converter online. Convert between 10 units including square meters, acres, hectares, square feet, and square miles instantly. Runs in your browser.
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Speed Converter
Free speed converter online. Convert between km/h, mph, knots, Mach, meters per second, and the speed of light with instant results. Runs in your browser.
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Time Converter
Free time converter online. Convert between 12 units from nanoseconds to centuries including seconds, minutes, hours, days, weeks, and years. Runs in your browser.
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Data Storage Converter
Free data storage converter online. Convert between bits, bytes, KB, MB, GB, TB, PB, and their binary equivalents (KiB, MiB, GiB). Runs in your browser.
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Pressure Converter
Free pressure converter online. Convert between 10 units including Pascal, bar, PSI, atm, torr, and inches of mercury with instant results. Runs in your browser.
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Energy Converter
Free energy converter online. Convert between 12 units including joules, calories, kilowatt-hours, BTU, and electronvolts instantly. Runs in your browser.
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Power Converter
Free power converter online. Convert between 11 units including watts, kilowatts, megawatts, horsepower, and BTU per hour instantly. Runs in your browser.
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Frequency Converter
Free frequency converter online. Convert between 10 units including Hz, kHz, MHz, GHz, THz, RPM, and radians per second instantly. Runs in your browser.
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Fuel Efficiency Converter
Free fuel efficiency converter online. Convert between MPG (US and Imperial), km/L, L/100km, and km/gal with instant results. Runs in your browser.
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Angle Converter
Free angle converter online. Convert between degrees, radians, gradians, arc minutes, arc seconds, turns, and milliradians instantly. Runs in your browser.
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Force Converter
Free force converter online. Convert between 11 units including newtons, pound-force, kilogram-force, dynes, poundals, and kips instantly. Runs in your browser.
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Torque Converter
Free torque converter online. Convert between 9 units including Newton-meters, pound-feet, kilogram-force meters, and pound-inches. Runs in your browser.
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Cooking Measurement Converter
Free cooking measurement converter online. Convert between 17 units including cups, tablespoons, teaspoons, ml, fluid ounces, and pinch. Runs in your browser.
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Shoe Size Converter
Free shoe size converter for men, women, and kids. Convert between US, UK, EU, CM, and inches instantly with complete size charts and foot measurement guide.
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Clothing Size Converter
Free clothing size converter for men and women. Convert US, UK, EU, and Asian sizes for tops, pants, and dresses with body measurements and complete charts.
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Timezone Converter
Free timezone converter online. Convert times between 24 world timezones with date handling, day-change indicator, and swap. Runs in your browser.
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Unix Timestamp Converter
Free Unix timestamp converter online. Convert between Unix timestamps and readable dates with auto-detect and live clock. Runs in your browser.
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Date Format Converter
Free date format converter online. Convert any date into 9 formats at once including ISO 8601, US, EU, long, short, and RFC 2822. Runs in your browser.
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Work Days Calculator
Free work days calculator online. Count business days between two dates or add work days to a start date, excluding weekends. Runs in your browser.
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Leap Year Checker
Free leap year checker online. Check if any year is a leap year, see the rule explained, and find nearby leap years instantly. Runs in your browser.
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Week Number Calculator
Free week number calculator online. Find the ISO and US week number, day of year, quarter, and days remaining for any date. Runs in your browser.
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Countdown Timer Creator
Free countdown timer creator online. Set a target date and time and watch a live countdown in days, hours, minutes, and seconds. Runs in your browser.
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Time Addition Calculator
Free time addition calculator online. Add multiple time durations together and see totals in hours, minutes, seconds, and decimal. Runs in your browser.
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Military Time Converter
Free military time converter online. Convert between 12-hour AM/PM and 24-hour military time formats with instant results. Runs in your browser.
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Decimal Hours Converter
Free decimal hours converter online. Convert between decimal hours and hours, minutes, seconds format in both directions instantly. Runs in your browser.
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Binary Converter
Free binary converter online. Convert between binary, decimal, octal, and hexadecimal number systems with instant results and copy. Runs in your browser.
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Octal Converter
Free octal converter online. Convert between octal, decimal, binary, and hexadecimal with file permission display and instant results. Runs in your browser.
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Hexadecimal Converter
Free hex converter online. Convert between hexadecimal, decimal, binary, and octal with ASCII character and color preview. Runs in your browser.
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Scientific Notation Converter
Free scientific notation converter online. Convert between standard numbers and scientific notation in both directions with instant results. Runs in your browser.
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Color Converter
Free color converter online. Convert between HEX, RGB, and HSL color formats with a live color preview and one-click copy. Runs in your browser.
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DPI Calculator
Free DPI calculator online. Calculate pixels per inch, dot pitch, megapixels, and aspect ratio from resolution and screen size. Runs in your browser.
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Aspect Ratio Calculator
Free aspect ratio calculator online. Find ratios, scale dimensions proportionally, and pick from common presets instantly. Runs in your browser.
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Image Resolution Converter
Free image resolution converter online. Convert pixel dimensions to print sizes in inches or centimeters at any DPI instantly. Runs in your browser.
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Density Converter
Free density converter online. Convert between 10 units including kg/m3, g/cm3, g/mL, lb/ft3, and lb/gallon with instant results. Runs in your browser.
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Electric Current Converter
Free electric current converter online. Convert between 8 units including ampere, milliampere, microampere, and kiloampere instantly. Runs in your browser.
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Voltage Converter
Free voltage converter online. Convert between 7 units including volt, millivolt, microvolt, kilovolt, and megavolt with instant results. Runs in your browser.
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Resistance Converter
Free resistance converter online. Convert between 8 units including ohm, milliohm, kilohm, megohm, and gigohm with instant results. Runs in your browser.
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Luminosity Converter
Free luminosity converter online. Convert between 13 light units across intensity, flux, and illuminance categories instantly. Runs in your browser.
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Sound Level Converter
Free sound level converter online. Convert dB SPL to pressure and ratios, combine two levels, and browse a 15-point reference chart. Runs in your browser.
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