Calendar Time Converter
Convert between days, weeks, months, quarters, years, decades and centuries.
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Convert calendar time units
This calendar converter switches between everyday calendar durations — days, weeks, fortnights, months, quarters, years, decades, and centuries. It is handy for planning, finance, and answering questions like “how many days are in 6 months?” Months and years use average lengths (30.44 days and 365.25 days) so longer spans stay accurate.
Common calendar conversions
| From | To | Result |
|---|---|---|
| 1 year | weeks | 52.18 weeks |
| 1 month | days | 30.44 days |
| 1 quarter | days | 91.31 days |
| 1 decade | years | 10 years |
To count the exact days between two specific dates, use our date calculator. For smaller units like hours and seconds, see the time unit converter.
Frequently asked questions
How many days are in a month?
On average, 30.44 days. Actual months range from 28 to 31 days, so this converter uses the average for accuracy across longer periods.