Time Converter

Convert between 9 time units.

Unit Symbol
seconds s
milliseconds ms
microseconds µs
minutes min
hours h
days d
weeks wk
months mo
years yr

Time is the most universal measurement, yet converting it can be tricky. While minutes and hours are standard, days, weeks, months, and years have variable definitions depending on the context (leap years, 30 vs 31 day months). Our time converter standardizes these values for accuracy: a year is treated as a Julian year (365.25 days) and a month as an average (30.44 days). Whether you are a developer calculating milliseconds, a project manager planning weeks, or an astronomer looking at light-years, this tool provides the precise conversions you need.