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📅 Date & Time Calculators

9 free date and time calculators for everyday use — age, working hours, time zones, and date differences.

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Age Calculator
Calculate exact age in years, months, and days from date of birth.
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Date Calculator
Days between two dates, or add/subtract days from a date.
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Day Counter
Count calendar days, business days, or weekdays between dates.
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Hours Calculator
Calculate hours and minutes between two times.
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Time Calculator
Add or subtract time values (hours, minutes, seconds).
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Time Card Calculator
Weekly timesheet — enter start/end times, calculate total hours and pay.
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Time Duration
Calculate duration between two specific date-times.
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Time Zone Calculator
Convert times between all Australian and world time zones.
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Day of the Week
Find what day of the week any past or future date falls on.