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Immediate conversion
Enter a value, choose the units and press the button.
Online Calculator
Time converter
Convert durations between common units of time.
Information
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Local processing
The conversion is done directly in your browser.
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Free
No registration, external API or subscription required.
Frequently asked questions
How many seconds are in an hour?
An hour has 3,600 seconds.
How many hours are in a day?
A day has 24 hours.
How many days are in a week?
A week has 7 days.
Does it serve calendar dates?
No. It converts fixed durations. For dates, use the date calculators.