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Date-time converter

Convert between ISO, Unix timestamps, UTC, and local time.

Related tools

Integer base converter

Convert numbers between bases — binary, octal, decimal, hex, and any base 2–36.

Roman numeral converter

Convert numbers to Roman numerals and back (1–3999).

Temperature converter

Convert between Celsius, Fahrenheit, and Kelvin.

Buddhist Era ↔ Gregorian

Convert dates between the Thai Buddhist calendar (พ.ศ.) and the Gregorian calendar (ค.ศ.).