All Calculators
Free online time and date calculators. Convert units, calculate durations, track work hours, and more.
Time Conversion
Convert between different time units and formats. Hours to minutes, time to decimal, and more.
Time Converter
Time to Decimal
Decimal to Time
Time Math
Calculate time differences, add times together, find averages, and compute elapsed time.
Duration Calculator
Time Addition
Average Time
Work & Pay
Track work hours, calculate overtime pay, and manage timesheets for payroll.
Time Card
Time and a Half
Weekly Hours
Date Calculators
Count days until a date, days left in the year, days passed, and more date calculations.
Days Until Date
Days Left in Year
Days Passed
All Calculators
Time Converter
Convert time units
Time Duration Calculator
Time between two times
Time to Decimal
HH:MM:SS to decimal
Decimal to Time
Decimal to HH:MM:SS
Average Time Calculator
Average multiple times
Time Addition Calculator
Add times together
Elapsed Time Calculator
Time since start
Time and a Half
Calculate overtime pay
Time Card Calculator
Weekly work hours
Days Until Date
Countdown to any date
Days Left in Year
Days remaining this year
Days Passed in Year
Days passed this year
Zulu Time Converter
Convert to/from UTC
Military Time
12h to 24h conversion
Speech Time Calculator
Estimate speaking duration