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Time Unit Converter

Convert between time units — seconds, minutes, hours, days, weeks, months, years.

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How It Works

Months use 30.4375 days (average) and years use 365.25 days to account for leap years. For exact differences between dates, use a date calculator.

FAQ

Why is a month 30.44 days?

It's the average month length over 4 years (12 months ÷ 365.25 days).

Leap years?

Built into the year-to-day factor of 365.25.

Decades, centuries?

Not in this version — multiply years.

Exact dates?

Use a dedicated date difference tool.

Saved?

No.

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