Time Converter: Convert Seconds, Minutes, Hours and More
The Time Converter changes a time value from a selected source unit to a target unit, from nanoseconds through millennia, including seconds, minutes, hours, days, weeks, and fortnights. Units are exact multiples of a second except calendar units, which use conventional averages: a month is 30.4375 days and a year is 365.25 days. Decades, centuries, and millennia follow the Julian year.
The Time Converter changes a time value from a selected source unit to a target unit. Use it to convert between nanoseconds, seconds, minutes, hours, days, weeks, fortnights, and longer spans through millennia. This online time conversion tool gives developers and other users a direct way to check a figure in the unit they need.
Most of the available time units are exact multiples of the second. Calendar units use conventional averages instead: an average month is 30.4375 days, or one twelfth of a 365-day year. The year is the Julian year of 365.25 days, the IAU definition used for light-years; decades, centuries, and millennia follow that Julian year. Choose the source and target units to apply the relevant conversion basis.
Time units describe the same kind of measurement at different scales, but calendar units need a defined convention because calendar months and years do not all have the same duration. Converting lets you compare measurements or communicate them in a unit that better fits your audience, whether you are working with a brief interval or a long span.
The Time Converter runs entirely in your browser. Your input is processed on your device and is not uploaded, stored, or sent to a server. It works offline once the page has loaded, and the tool is free to use. Developers, DevOps engineers, and anyone who needs to translate time values between units can use it to check individual figures or convert a set of values.
Step 1: Enter the time value or values you want to convert. You can convert a set of values instead of calculating each one by hand.
Step 2: Choose the source unit for the value, such as seconds, days, or years.
Step 3: Choose the target unit you want to use, such as hours, weeks, or millennia.
Step 4: Read the converted figure in the selected target unit.
Use case: Convert time measurements when the source and target units differ. This helps compare values without working through the unit arithmetic by hand.
Use case: Check a duration in the unit your audience uses. For example, present a value in hours instead of seconds when that makes it easier to understand.
Use case: Convert a set of values at once rather than calculating and rounding each one by hand.
Use case: Compare durations recorded in different units by converting them to a common unit.
Use case: Express long time spans in decades, centuries, or millennia when those units suit the context better than years.
Use case: Convert between short and long units, such as nanoseconds and seconds, to make a time measurement easier to read.