About the Hours Calculator
An hours calculator is one of the most searched tools on the web because timesheets are still filled in by hand. The arithmetic is deceptively awkward: clock time is base-60, payroll is base-10, and any shift that crosses midnight breaks a naive subtraction.
This tool handles all three problems at once. It returns the duration between two times with unpaid breaks deducted, converts that answer into decimal hours, and then totals a whole week the way a payroll system would — overnight shifts included. If the people you bill or schedule are in different countries, the time zone converter settles what “09:00” actually means on each side.