Why time conversion still uses base-60
Unlike most modern measurement systems, which moved to base-10 for ease of conversion, time measurement still runs on base-60 for seconds and minutes — a holdover from ancient Babylonian mathematics that proved durable enough to survive into the modern world largely unchanged.
This converter handles the arithmetic across seconds, minutes, hours, days and weeks, so you don't need to remember that there are 86,400 seconds in a day or 604,800 in a week.