Business date planning
Free Business Days & Deadline Calculators
Calculate business days, invoice due dates, SLA deadlines, shipping estimates, payroll cutoff dates, working days, and public holidays by country. No login required.
Popular calculators
Start with the date tools people most often need for workday deadlines, payment terms, and holiday planning.
Business Days Calculator
Count workdays between two dates and exclude weekends, public holidays, and custom company holidays.
Add Business Days
Find a date after 10, 30, or any number of workdays, or subtract business days from a deadline.
Invoice Due Date Calculator
Calculate Net 30, Net 60, EOM, calendar-day, or business-day invoice payment deadlines.
Public Holidays
View a country/year holiday calendar with national, regional, bank, school, optional, and observed holiday details.
Business planning tools
Each calculator runs in the browser and keeps country, holiday, and non-working-day assumptions visible.
Business Days Calculator
Count workdays between two dates and exclude weekends, public holidays, and custom company holidays.
Add Business Days
Find a date after 10, 30, or any number of workdays, or subtract business days from a deadline.
Invoice Due Date Calculator
Calculate Net 30, Net 60, EOM, calendar-day, or business-day invoice payment deadlines.
SLA Deadline Calculator
Plan SLA response deadlines with business hours, time zones, public holidays, and calendar-hour modes.
Shipping Date Calculator
Estimate ship dates and delivery windows with order cutoff time, handling time, transit days, and weekend delivery rules.
Payroll Cutoff Calculator
Plan pay dates, timesheet deadlines, cutoff buffers, and previous-business-day payroll adjustments.
Working Days in Month
Count working days and work hours in a month or year with public holidays and custom company holidays.
Public Holidays
View a country/year holiday calendar with national, regional, bank, school, optional, and observed holiday details.
Countries and holidays
Country defaults provide a starting point for non-working days, public holidays, and time-zone examples. Regional, bank, school, and company holidays can differ.
How DeadlineDays works
Choose a calculator
Pick the workday, invoice, SLA, shipping, payroll, working-days, or public-holiday tool that matches your task.
Set country and calendar rules
Use a country default as a starting point, then adjust non-working days, public holidays, and custom company holidays.
Review assumptions before relying on a date
For critical deadlines, verify regional holidays and policy-specific rules with official sources.
FAQ
Are calculator inputs stored on a server?
No. The calculators are designed for browser-side use with no login and no server-stored calculator inputs.
Can I use regional or company holidays?
Regional holiday support is available where holiday data includes subdivisions. Company holidays can be entered as custom holidays in calculators.
Is this legal, payroll, tax, or shipping advice?
No. DeadlineDays is a general planning tool. Confirm important dates with official calendars, contracts, policies, or service providers.
Privacy-friendly by default
No login. No database. Calculator inputs are not stored on a server.
This site provides general date-planning information and is not legal, tax, payroll, shipping, or financial advice.
Static business date calculators for deadlines, due dates, working days, and public holidays.