Numbers & time
Free tools from the Numbers & time group.
Unix to dateConvert a Unix timestamp in seconds or milliseconds to a date and time, in UTC or in your local time.
Date to UnixConvert a date and time to a Unix timestamp in seconds, in UTC or in your local time.
DEC to BINConvert decimal numbers to binary and vice versa. Instant results.
DEC to HEXConvert decimal numbers to hexadecimal and vice versa. Instant results.
Roman to numberTurn a Roman numeral or a Roman numeral date into regular numbers. The converter also reads the IIII form and letters with a bar over them.
Number to RomanWrite any number or date in Roman numerals, from 1 to 3,999,999. Numbers from 4,000 get a bar over the letters.