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Time Converters

Seconds ↔ HH:MM:SS and other time shortcuts.

Time is easy to convert in your head until the numbers get large — how long is 9,000 seconds, or 1,500 minutes? These converters handle the arithmetic and, for the HH:MM:SS tools, format the answer the way timers, video editors, and race results display it.

All conversions use fixed definitions (60 s = 1 min, 3600 s = 1 h, 24 h = 1 day). For calendar questions — how many days between two dates, or exact age — use the Date Difference and Age calculators in Everyday Math instead, because months and years vary in length.

All time converters

Pick a tool to see the calculator, formula, worked example, and FAQs.

Time Seconds → HH:MM:SS Total seconds into hours:minutes:seconds. Time HH:MM:SS → Seconds Hours, minutes, seconds into total seconds. Time Hours → Minutes Convert hours to minutes. Time Minutes → Hours Convert minutes to hours. Time Days → Hours Convert days to hours.

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