Date & Business Days
Count calendar and business days, add or subtract days from a date, calculate date ranges and durations, convert date formats, and convert time zones.
16 calculators in this category
- Business Days CalculatorCount working days between dates, excluding weekends.
- Working Days CalculatorCount working days between dates, excluding weekends and optional holidays.
- Add Business Days To Date CalculatorAdd business days to a start date and get the resulting UTC date, skipping weekends and optional US holidays.
- Subtract Business Days From Date CalculatorSubtract business days from a start date and get the resulting UTC date, skipping weekends and optional US holidays.
- Business Day Offset CalculatorAdd or subtract business days from a start date in one calculator, skipping weekends and optional US holidays.
- Business Days Until Date CalculatorCount business days remaining until a target date from today or a custom start date, with calendar days and optional US holidays.
- Days Between DatesCalculate the number of days between two calendar dates.
- Date Range CalculatorCalculate date ranges with inclusive or exclusive boundaries, plus optional business-day totals.
- Date Duration CalculatorCalculate duration between two dates in years, months, weeks, and days.
- Age CalculatorFind your exact age in years, months, and days.
- Add or Subtract DaysShift a date forward or backward by days, weeks, or months.
- Date Difference CalculatorFind the exact difference between two dates in days, hours, minutes, and seconds.
- Hours Between Dates CalculatorCalculate total hours, days, and minutes between two date-times (UTC).
- Date Format ConverterConvert dates between ISO, UTC, local, and readable formats.
- Unix Timestamp ConverterConvert Unix timestamps to readable dates and readable dates to Unix timestamps.
- Timezone ConverterConvert time between common timezones and compare time differences.
Related Guides
- Business Days vs Calendar Days GuideLearn what calendar days and business days mean, when each applies to deadlines and contracts, and which DateToolsHQ calculators to use for invoices, SLAs, notice periods, and more.
- Business Time Calculators GuideCentral guide to DateToolsHQ Business Time calculators—invoice due dates, contract end dates, SLA deadlines, business-day math, notice periods, and deadline planning in UTC.
- How Business Days Are CalculatedUnderstand how business day counts work: weekends, holidays, inclusive ranges, and how DateToolsHQ applies the rules.
- How Many Working Days Are in a Year?See how working day totals are derived from calendar days, weekends, and holidays—and how to use country and year pages for planning.