Calculators & converters (unit, currency, niche calculators)
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Calculator.net is a web-based collection of calculators covering everyday math, personal finance, health, fitness, dates, grades, conversions, and technical topics. It includes a general scientific calculator plus many dedicated calculators with explanatory context, available without account registration.
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Xe provides an online currency conversion tool for checking current foreign exchange rates across many global currencies. The site also includes related currency resources such as charts, rate alerts, historical rates, an IBAN checker, money transfer options, and exchange-rate data services for businesses.
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RapidTables provides a collection of browser-based converters for measurements, electrical values, numeric formats, colors, images, and related technical quantities. The page acts as an index to many specific conversion calculators, including length, weight, temperature, power, voltage, energy, frequency, and number-base conversions.
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ConvertUnits.com is a web-based calculator for converting between measurement units and related quantities. It supports many unit types, including metric and imperial measurements, currency, chemistry-related conversions, date calculations, and salary/hourly pay conversions.
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Metric Conversions provides web-based calculators and reference tables for converting between measurement units. It covers common categories such as temperature, length, area, volume, weight, speed, time, angle, pressure, energy, and power, with multilingual navigation and popular quick links for frequent conversions.
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UnitConverters.net is a web-based conversion reference for measurement units across common and technical categories. It supports everyday conversions such as length, temperature, weight, volume, speed, and area, alongside specialized converters for engineering, fluids, electricity, magnetism, radiology, typography, data transfer, and more.
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