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Length, weight, temperature, area (including hectare, acre and dunam), volume, speed, time and digital data, in metric and imperial units.
Both are available: "gallon" is the US gallon and "UK gallon" is the imperial one. Cups and spoons are US measures.
MB is decimal (1,000,000 bytes) and is used by disk makers; MiB is binary (1,048,576 bytes) and is often shown by operating systems.
Yes. Arabic, Persian, Hindi and other digits are recognised, and both comma and point work as the decimal separator.
Exact conversion factors are used and results are shown with up to 10 significant digits.
An average Gregorian month (30.44 days) and year (365.2425 days).