Omrekeningen

Omrekenen van eenheden en maten

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Angle Converter

Convert between SI and historical plane-angle units (radian, milliradian, degree, gradian, turn, arcminute, arcsecond) anchored to the BIPM SI Brochure definition of the radian.

Engels

Area Converter

Convert between metric and imperial area units (square millimetre, square centimetre, square metre, hectare, square kilometre, square inch, square foot, square yard, acre, square mile) with NIST-grade exact factors.

Thai

Buddhist Calendar Converter

Convert dates between the Gregorian calendar (CE) and the Thai Buddhist Era calendar (BE). Handles the pre-1941 Thailand reform automatically.

Engels

Chinese Lunar Calendar Converter

Convert any date between the Gregorian calendar and the Chinese, Vietnamese, or Korean lunar (lunisolar) calendar. See the zodiac animal, sexagenary year, element, solar term and leap-month status instantly.

Engels

Data Storage Converter

Convert between bits, bytes, and every decimal (kB, MB, GB, TB) and binary (KiB, MiB, GiB, TiB) unit — with the KiB-vs-KB distinction done right.

Engels

Eenhedenomzetter

Convert between length, volume, area, temperature, pressure, energy, power, force, torque, and angle units with NIST-grade exact factors.

Engels

Energy Converter

Convert between SI, electrical, and thermal energy units (joule, kilojoule, megajoule, watt-hour, kilowatt-hour, thermochemical calorie, IT calorie, kilocalorie, BTU, US therm, electronvolt) with NIST-grade exact factors anchored to the 2019 SI redefinition.

Engels

Force Converter

Convert between SI, gravitational, and CGS force units (newton, kilonewton, dyne, kilogram-force, tonne-force, pound-force, ounce-force, short-ton-force) with NIST-grade exact factors anchored to CGPM 1901 standard gravity.

Engels

Hijri Calendar Converter

Convert dates between the Hijri (Islamic) lunar calendar and the Gregorian calendar. Shows AH year, Ramadan and Eid countdowns, and Arabic-Indic numerals.

Engels

Japanese Era Converter

Convert dates between the Gregorian calendar and the Japanese era calendar (wareki) across Meiji, Taisho, Showa, Heisei and Reiwa. Day-exact era resolution, gannen handling, and the Japanese-script date ready to copy.

Engels

Length Converter

Convert between metric, imperial, and astronomical length units (millimetre, metre, kilometre, inch, foot, yard, mile, nautical mile, ångström, light-year, AU, parsec) with NIST-grade exact factors.

Engels

Mass Converter

Convert mass between metric (kg, g, mg, tonne), avoirdupois (lb, oz, stone, short ton, long ton), troy ounce, grain, and the metric carat with NIST-grade exact factors.

Engels

Omrekener cups naar grammen

Reken cups om naar grammen en grammen naar cups voor 30 keukeningrediënten. Snelknoppen voor breukdelen, ingrediëntkeuze en een referentietabel.

Engels

Omrekener Hebreeuwse kalender

Reken data om tussen de Hebreeuwse (joodse) en Gregoriaanse kalender. Inclusief Adar I/II in schrikkeljaren en een aftelling naar de komende feestdagen.

Engels

Omrekener keukenmaten

Reken om tussen alle keukenmaten: cups, eetlepels, theelepels, ml, liters, grammen, kg, ounces en ponden. Met ingrediëntondersteuning voor omrekeningen tussen volume en gewicht.

Engels

Omrekener ounces naar grammen

Reken direct ounces om naar grammen en grammen naar ounces. Snelle referentietabel voor veelgebruikte gewichtsomrekeningen.

Engels

Pet Age Calculator — Dog & Cat Years in Human Years

Convert your pet's age into human years using veterinary life-stage data, not the ×7 myth. Dogs by size class, cats, horses and five small pets, in both directions.

Engels

Power Converter

Convert between SI and historical power units (watt, kilowatt, megawatt, mechanical horsepower, metric horsepower / PS, electric horsepower, BTU per hour, kilocalorie per hour, foot-pound per second). Disambiguates the three horsepower variants that vary by hundreds of watts.

Engels

Pressure Converter

Convert between SI, atmospheric, and gravitational pressure units (pascal, kilopascal, megapascal, bar, millibar, atmosphere, torr, mmHg, psi, kgf/cm², inH2O, cmH2O) with NIST-grade exact factors and conventional liquid-column values.

Engels

Ringmaat-omrekenaar

Reken ringmaten om tussen de systemen VS, VK, EU/ISO, Frankrijk, Duitsland, Japan, China en Korea — of meet de diameter of omtrek van uw vinger om uw maat direct te vinden.

Engels

Roman Numerals Converter

Convert numbers to Roman numerals and back, instantly. Bidirectional, with a place-value breakdown, a date-to-Roman tattoo mode, and support up to 3,999,999.

Engels

Schoenmatenomrekener

Reken schoenmaten om tussen US, UK, EU, JP, KR, BR, MX, AU en voetlengte. Direct resultaat voor heren, dames en kinderen.

Engels

Schoenmatenomrekener: EU ↔ UK

Reken direct Europese schoenmaten om naar Britse. Volledige EU ↔ UK-tabellen voor heren, dames en kinderen, met voetlengte in cm en inches.

Engels

Shoe Size Converter: US to EU

Convert shoe sizes between US and EU instantly. Quick reference charts for men's, women's, and kids' sizes with foot length in cm and inches.

Engels

Shoe Size Converter: US to UK

Convert shoe sizes between US and UK instantly. Quick reference charts for men's, women's, and kids' sizes with foot length in cm and inches.

Engels

Speed Converter

Convert speed between km/h, mph, m/s, knots, feet per second, Mach and the speed of light. Every factor is exact by definition except Mach, which is flagged as a reference condition.

Engels

Tablespoons to ML Converter

Convert tablespoons to milliliters and ml to tbsp. Supports US, metric, and Australian tablespoon standards.

Engels

Temperature Converter

Convert between Celsius, Fahrenheit, Kelvin, Rankine, and Réaumur temperatures. Handles non-multiplicative scales correctly using the SI offset definition (0 °C = 273.15 K exactly, 13th CGPM 1967).

Thai

Thai Gold Calculator

Calculate gold value from weight (baht, salung, grams) using live gold prices. Convert between Thai gold weight units for bars and jewelry.

Engels

Time Converter

Convert time between nanoseconds, microseconds, milliseconds, seconds, minutes, hours, days, weeks, fortnights, months, years, and decades. Exact SI factors, honest Julian month and year conventions.

Engels

Torque Converter

Convert between SI and imperial torque units (newton-metre, kilonewton-metre, kilogram-force metre, kilogram-force centimetre, pound-foot, pound-inch, ounce-inch) with NIST-grade exact factors anchored to CGPM 1901 standard gravity and the 1959 international yard and pound.

Vietnamees

Vietnam Gold Calculator

Calculate the VND value of gold by weight (phân, chỉ, lượng/cây, gram) and purity using the live world gold price, and convert between Vietnamese and metric gold units.

Engels

Volume Converter

Convert between metric, US customary, and UK imperial volume units (millilitre, cubic centimetre, litre, cubic metre, cubic inch, cubic foot, cubic yard, US fluid ounce, US pint, US gallon, UK pint, UK gallon) with NIST-grade exact factors.

Engels

World Calendars Converter

Convert any date across six world calendar systems at once: Gregorian, Hijri, Hebrew, Persian, Japanese Era, and Buddhist.

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