Date & Time Calculators
Calculators for time duration, time zone conversion, work hours, and timesheet totals. Search or browse by time topic.
Popular date & time calculators
High-frequency tools in this category.
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Time Duration
Add, subtract, and convert time intervals in hours, minutes, and seconds.
Time Zones & Time Formats
Convert between time zones and military/standard time formats.
Work Hours & Timesheets
Track work hours, calculate overtime, and estimate gross pay from time cards and timesheets.
Time Duration
Add, subtract, and convert time intervals in hours, minutes, and seconds.
Countdown Timer
Count down to a future date or event.
Coming soonDigital Stopwatch Timer Calculator
Simulate a stopwatch and calculate elapsed time.
Coming soonHours and Minutes Calculator
Add or subtract two durations in hours and minutes. Get the result in HH:MM, total minutes, and decimal hours.
Hours Calculator
Calculate hours between two times across multiple shifts. Enter start and end times, subtract breaks, and get total hours in decimal format.
Time Addition Calculator
Add or subtract multiple time durations in hours, minutes, and seconds.
Minutes to Hours Calculator
Convert minutes to hours, hours to minutes, and decimal hours to hours and minutes.
Time Duration Calculator
Find the duration between two points in time.
Time Zones & Time Formats
Convert between time zones and military/standard time formats.
Decimal Hour Calculator
Convert hours and minutes to decimal hours, or decimal hours to hours and minutes. The format used in payroll, billing, and spreadsheets.
Military Time Converter
Convert between 12-hour AM/PM, 24-hour, and military time. Includes a full military time reference chart.
Time Difference Calculator
Calculate the time difference between two time zones on any date, or find the elapsed time between two clock times.
Time Zone Calculator
Convert a specific time from one city or time zone to another, with automatic daylight saving time adjustment.
UTC / GMT Time Calculator
Convert UTC or GMT time to your local time zone, or convert local time back to UTC/GMT with daylight saving time handled for the selected date.
Work Hours & Timesheets
Track work hours, calculate overtime, and estimate gross pay from time cards and timesheets.
Time Card Calculator
Calculate weekly time card hours with lunch breaks, overtime, and estimated gross pay.
Work Hours Calculator
Calculate net hours worked from clock in and clock out times, with optional break and pay estimate.
Clock Out Time Calculator
Find what time to clock out based on your clock-in time, required work hours, and break.
Time Clock Calculator
Calculate work time from clock-in and clock-out times, with breaks and optional rounding.
Time Punch Calculator
Add up multiple punch-in and punch-out records for daily or weekly work time.
Employee Hours Calculator
Calculate employee work hours, regular hours, overtime hours, and estimated gross pay.
Timesheet Calculator
Calculate weekly or project timesheet hours, including billable time and optional pay estimates.
Coming soonTime and a Half Calculator
Calculate time-and-a-half overtime rate, overtime pay, and estimated gross pay.
Coming soonDate & Time calculators FAQ
Helpful answers for using the CalculatorNeo date & time collection.