Business Time Tools
Calculate business days, deadlines, due dates, notice periods, and SLA targets.
7 calculators
Calculators
All DateToolsHQ calculators, grouped by category. Open a category for the full tool list, or jump straight to a calculator.
Countdown calculators
Count down to a custom date or major holidays—calendar days, optional UTC times, and seasonal pages for Good Friday, Easter, Labor Day, Memorial Day, Father's Day, Mother's Day, Independence Day, Valentine's Day, Halloween, Thanksgiving, Black Friday, Cyber Monday, Christmas, and New Year.
19 calculators across 2 groups
Date calculators
Count calendar days, age, and precise differences between dates.
7 calculators
Business day calculators
Count weekdays between dates, excluding weekends and optional holidays—then use Business Time calculators for due dates, notice periods, and SLA deadlines.
2 calculators
Payroll calculators
Prorate salary or rent, total weekly hours, and estimate overtime gross pay.
4 calculators
Time utilities
Reformat dates, Unix timestamps, and time zones.
3 calculators