Time Converter
Convert between units of time, from milliseconds and seconds to minutes, hours, days, weeks, months, and years. The result updates instantly.
About Time Converter
This time converter moves between units from milliseconds up to years. Months and years use fixed lengths of 30 and 365 days so the conversion is consistent, which is ideal for quick estimates and planning.
Frequently Asked Questions
How long is a month in this tool?
A month is treated as 30 days and a year as 365 days, so the results are consistent. For exact calendar math, counts can vary by a day or two.
How many seconds are in a day?
There are 86,400 seconds in a day. Enter 1 day and choose seconds to confirm.
Is the tool private and free?
Yes. Every conversion runs in your browser, nothing is uploaded, and the tool is free with no signup.
About Matt George
I'm Matt George, a software engineer in the startup space. I run my own shop building software for early-stage founders, and I love making free tools and experiences that people actually use. Enjoy using Time Converter!