All free time & hours calculators
Every tool runs instantly in your browser – no sign-up, no downloads, nothing uploaded.
Hours CalculatorHours worked between two times, minus breaks
Time Card CalculatorWeekly timesheet with lunch, overtime & pay
Biweekly Time CardTwo-week timesheet, overtime per week
Time CalculatorAdd & subtract hours, minutes and seconds
Time Duration CalculatorExact time between two dates & times
Military Time Converter24-hour ↔ 12-hour AM/PM + full chart
Minutes to DecimalConvert time to decimal hours for payroll
Decimal Hours to TimeConvert decimal hours to hours & minutes
Overtime CalculatorTime-and-a-half & double-time pay
Hourly to SalaryHourly wage ↔ annual, monthly, weekly pay
Hours From NowWhat time will it be in X hours?
Days Between DatesCount days, weeks & months between dates
Business Days CalculatorWorking days between dates, add workdays
Age CalculatorExact age in years, months & days
Time Zone ConverterConvert a time between world time zones
Week NumberWhat week of the year is it? (ISO weeks)
Sleep CalculatorBest bedtime or wake-up time by sleep cycles
Military time lookups
Quick pages for every hour: 0000 · 0600 · 0900 · 1200 · 1300 · 1500 · 1600 · 1700 · 1800 · 1900 · 2000 · 2100 · 2200 · 2300 · full chart