Workdays / Business Days Calculator summary. This page is a business days calculator for BulkCalculator's time tools section. It counts weekdays between dates, subtracts selected holidays and adds a requested number of business days. Example: 2026-01-12 to 2026-01-30 in the US. Expected output: 14 business days, with 1 holiday: MLK Day.

BulkCalculator Time Tools

Workdays / Business Days Calculator

Free business days calculator for workdays between dates or adding business days with US, UK, Canada, Australia and India holiday presets.

T

Live Workdays / Business Days Calculator

It counts weekdays between dates, subtracts selected holidays and adds a requested number of business days.

14

How to use Workdays / Business Days Calculator

  1. Open the Workdays / Business Days Calculator page and use the default example if you want a quick test.
  2. Enter start date, end date, holiday preset and optional number of business days to add in the tool panel.
  3. Press the primary action button or use the listed keyboard shortcut when available.
  4. Read the result as business-day count, added-date result and holidays counted, then copy, export or print it if needed.

Formula and algorithm

Business days are Monday through Friday minus holidays from the selected preset.

This tool runs in your browser. If the tab is backgrounded or the device sleeps, visible updates or alerts may be delayed. Notifications and Wake Lock reduce that risk where supported, but they are not a guarantee.

Worked example

2026-01-12 to 2026-01-30 in the US. The expected output is 14 business days, with 1 holiday: MLK Day.

{
  "tool": "Workdays / Business Days Calculator",
  "input": "2026-01-12 to 2026-01-30 in the US.",
  "output": "14 business days, with 1 holiday: MLK Day."
}

Use cases

Pro tips and gotchas

Frequently Asked Questions

How many business days between two dates

Enter your start date and end date. The calculator counts only weekdays (Monday through Friday), excluding Saturdays and Sundays. So between 1 March and 15 March, you'd typically get 11 business days depending on which days of the week those dates fall on. Add public holidays manually if your project requires excluding them — there's usually a holiday calendar option, or you can subtract them yourself. Useful for project timelines, payroll periods, and contract delivery deadlines.

How to calculate workdays excluding weekends

Enter the start and end dates. The calculator automatically skips Saturdays and Sundays, returning only the weekday count. If your week includes Saturdays as workdays (common in some industries), there's usually a custom-week option to include selected days. The output shows the total business day count along with the calendar day count, so you can compare both. Useful for HR calculations, project estimation, and "how many working days do I actually have?" planning.

How many working days until a date

Enter today's date as the start and the target date as the end. The calculator returns the working day count between now and then, excluding weekends and any holidays you've enabled. So if today is Monday 4 May and the target is Friday 22 May, the result is around 14 working days (depending on local holidays). Useful for tracking deadlines, exam countdowns, project finish dates, and travel preparation timing.

How to add business days to a date

Enter your start date, type the number of business days to add, click Calculate. The calculator skips weekends as it counts forward and returns the resulting business date. So adding 10 business days to Monday 5 May gives you Friday 16 May, not Thursday 15 May (because the two weekend days got skipped). Useful for "delivery in 7 business days" estimates, contract timelines, and back-calculating when a workflow should start to finish on time.

How many weekdays are between two dates

Enter the two dates and the calculator returns the count of Monday-through-Friday days between them. Weekdays and business days mean the same thing if you don't care about holidays — they only differ when you also exclude public holidays. The calculator shows weekdays by default. Switch on the holiday option to deduct national or regional holidays from the count. Useful for school schedules, payroll, and basic project timelines where holidays don't matter.

How to count business days without holidays

Enter your two dates. By default the calculator excludes Saturdays and Sundays only, giving you weekday count without holiday adjustments. If you want to include holidays in the deduction, switch on the holiday option (where available) and pick your country or region — the calculator then subtracts standard public holidays falling within the range. For custom holidays not in the default list, deduct them manually from the result. Useful for accurate project and payroll planning.

How many business days are in a month

Depends on the month. February typically has 19 to 21 business days, while a 31-day month with five Mondays through Fridays can have up to 23. Enter the first and last days of the month and the calculator returns the exact count for that specific month. Adjust for public holidays if your calculation needs them excluded. Useful for monthly payroll, billing cycles, project progress reporting, and "how much time do we actually have this month?" planning.

Glossary

UTC
Coordinated Universal Time, the reference time standard used for offsets and date math.
DST
Daylight Saving Time, a seasonal clock change that can affect wall-clock schedules.
IANA time zone
A named time zone such as America/New_York used by browsers for DST-aware rendering.
Tab-title timer
A timer state shown in the browser tab title so it remains visible while multitasking.
Wake Lock
A browser feature that can ask a device to keep the screen awake during active timing.
localStorage
Browser storage used here for settings and saved tool state on the same device.
Input format
Start date, end date, holiday preset and optional number of business days to add.
Output format
Business-day count, added-date result and holidays counted.

References and sources