Add and subtract hours and minutes to calculate total time.
The Hours Calculator precisely measures the time difference between two points in a day, useful for tracking shift lengths, travel durations, and schedules.
Time = End Time − Start TimeCalculating the difference between two timestamps is a common task that can become complicated when the end time crosses into a new day. Our calculator handles the "Wraparound" effect automatically, ensuring your totals are always accurate.
Many payroll systems use decimal hours (e.g., 8.5 hours) rather than hours and minutes (8 hours 30 minutes). This is because computers and spreadsheets can perform math much more easily on decimals. Our tool provides both formats so you can fill out timesheets or calculate pay without extra math.
Most businesses use a 12-hour clock (AM/PM), but international transport and military operations use the 24-hour clock (Military Time) to avoid any ambiguity. This calculator supports the standard 24-hour input used by web browsers for maximum precision.
Start at 09:30, End at 17:15 = 7 hours and 45 minutes (7.75 decimal hours).