CardHours is built and maintained by Alexander Polekha, an independent developer in Armenia.
It does one job: it turns the In and Out times on a time card into hours. Each day gets hours and minutes and decimal hours, each week and the two-week period get a total, and an hourly rate gives a gross pay figure. A night shift from 10:00 PM to 6:30 AM with a 30-minute break counts as 8:00 on the day it starts, and a day can have a second In and Out. The card can be printed, saved as a CSV file or shared as a link.
CardHours adds up hours and multiplies by your rate. It does not calculate overtime, taxes or deductions.
How the numbers are checked: the rules for reading times, for night shifts and for decimal hours come from published payroll documents of universities and the U.S. Office of Personnel Management, quoted with links on How we calculate. The calculator, the guides and the worked examples are produced by the same functions, tested against those documents' own examples.
Your times stay in your browser (see the privacy policy). If a total looks wrong, the contact form reaches the person who maintains the site.