Full name: fortnight
Plural form: fortnights
Category type: time
Scale factor: 1209600
The SI base unit for time is the second.
1 second is equal to 8.2671957671958E-7 fortnight.
Valid units must be of the time type.
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A fortnight is a unit of measurement of time equal to two weeks: that is 14 days, or literally 14 nights. The term is most commonly used in British English. It derives from the Old English feowertiene niht, meaning "fourteen nights".