Convert durations between seconds, minutes, hours, days, weeks, months, and years. A time converter is handy for planning schedules, estimating how long a task really takes, working out billing in different units, or answering trivia like how many seconds are in a day. This tool uses consistent definitions, treating a year as 365 days and a month as one twelfth of that year, so results are predictable and easy to reason about (calendar months vary in length, which is why an average is used). Choose the unit you have and the unit you want, type a value, and the answer updates live as you type. Everything is calculated in your browser, so it is fast, private, and keeps working without an internet connection.