horacalcFree time calculators for work hours and dates
Free calculators for working with time: hours worked with lunch breaks, weekly or biweekly time cards with overtime, adding time, business days, decimal hours and military time.
Every calculator runs in your browser without sign-up and accepts times the way you write them down: 8:30 AM, 830a or 17:30. Each one shows a worked example step by step, and you can share a result as a link, download it as a CSV file for Excel or Google Sheets, or print it. Overtime rules and holiday calendars are editable defaults with their sources linked. How the calculators work and are tested is explained on the About page.
Calculators
- Hours calculator
Hours worked between two times, minus lunch, in h:mm and decimal.
- Time calculator
Add and subtract hours, minutes and seconds, or time from a clock time.
- Time card calculator
Weekly or biweekly time card with lunch, overtime and gross pay.
- Business days calculator
Business days between dates or from a date, with US or UK holidays.
- Decimal hours converter
Hours and minutes to decimal hours and back, with a minutes chart.
- Military time converter
1600 to 4:00 PM and back, with a full 24-hour chart.