Date & Business Days Calculator

Calculate net working days and total days between dates, or add business days to a target date with customizable holidays and URL sharing.

How to Use
Click here to calculate hours, minutes, and time duration
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Calculate Business Days, Days Between Dates, and Target Dates

Calculate working days, business days, and total days between dates or add and subtract days. Exclude weekends, holidays, and custom company days off.

How to Use
STEP1

Choose Mode and Base Dates

Select Days Between Dates or Add / Subtract Days, then specify your start, end, or base date.

STEP2

Configure Weekends and Holidays

Choose weekend rules, exclude public holidays, toggle start date counting, and add custom company days off.

STEP3

View Results and Share Link

See business days, calendar days, and target dates in real time. Copy a shareable URL to sync calculation parameters.

Features

Real-Time Business Days and Total Days

Calculates both net working days excluding weekends and public holidays and total calendar days with complete breakdown.

Add and Subtract Days or Business Days

Find exact target dates by adding or subtracting calendar days, working days, weeks, or months with automatic holiday rollover.

Start Date Inclusive and Exclusive Toggle

Switch between including the start date as Day 1 or starting count from the next day to match legal and business conventions.

Custom Company Holidays and Nth-Week Rules

Add recurring company vacations, summer breaks, year-end holidays, or specific weekend patterns like alternating Saturdays.

Private In-Browser Processing and URL Sharing

All calculations run strictly inside your browser with zero server transmission. Copy a parameters URL to share conditions with teammates.

Ideal For

Project Schedule and Delivery Deadlines

Estimate task durations, turnaround times, and delivery dates based on actual business working days.

Invoices, Payment Terms, and Contracts

Determine due dates under standard payment terms (e.g. net 30 business days) with weekend and holiday adjustments.

HR Attendance, Notice Periods, and Leave

Count payroll working days, track resignation notice periods, and plan annual vacation countdowns.

FAQ
How do I choose between including and excluding the start date?
Choose "Include" (Day 1) when counting immediate project workload, task days, or payroll shifts. Choose "Exclude" (next day) when counting statutory notice periods, payment terms, or delivery grace periods.
How is this different from Excel's NETWORKDAYS or WORKDAY functions?
Unlike Excel, you do not need to create and maintain manual holiday lists or write formulas. Public holidays are detected automatically, and custom schedules are configured in clicks.
Are public holidays updated automatically?
Yes. Official public holidays for supported countries are loaded automatically, and individual holidays can be manually included or excluded as workdays.
Can I calculate a date 10 business days from today?
Yes. Open the Add / Subtract Days tab, set the amount to 10, unit to Business Days, and direction to After. The tool automatically accounts for weekends and holidays.
Is my custom holiday schedule uploaded to any server?
No. All calculations and custom holiday settings run entirely in your local browser and persist only in local storage.
Can I share my calculation conditions with colleagues?
Yes. Click "Copy Shareable Link" to generate a URL preserving all selected dates, country calendar, and holiday rules.
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