Days Counter
Calculate duration between dates, Business days excluding weekends/holidays, or Add/Subtract time from a date.
Ready to Calculate
Enter start and end dates to see the duration breakdown.
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The Ultimate Date Calculator
Detailed planning requires precise tools. Whether you are a project manager calculating a deadline, a logistics coordinator estimating delivery, or simply someone counting down the days to a vacation, our Advanced Days Counter is built to handle it all. Unlike simple counters, we provide three distinct modes: standard duration, business/working days, and date arithmetic.
Key Features
Precise Duration
Calculate the exact time between dates down to the second, with breakdowns in years, months, and weeks.
Business Days
Exclude weekends and custom holidays to get accurate working day counts for invoices and timelines.
Date Math
Easily find future or past dates by adding or subtracting any number of days, weeks, or years.
Printable Reports
Generate clean, ad-free popup reports of your calculations for documentation or sharing.
100% Private
All calculations are performed locally in your browser. No data is ever sent to a server.
Instant Results
Reactive interface updates immediately as you type or change options, with no page reloads.
Common Use Cases
Project Management
Calculate the number of working days available in a sprint or before a project deadline to allocate resources effectively.
Legal & Contracts
Determine precise expiration dates for notices, contracts, or cooling-off periods using the "Add Days" feature.
Event Planning
Create countdowns for weddings, holidays, or retirements. Know exactly how many weeks are left to prepare.
Travel & Visa
Calculate the 90/180 day rule for Schengen visas by counting exactly how many days you have spent or plan to spend abroad.
Frequently Asked Questions
How does the Days Counter calculate duration?
Our Days Counter uses precise calendar logic to calculate the exact time difference between two timestamps. It accounts for leap years, varying month lengths (28, 29, 30, or 31 days), and offers an option to include the end date for 'inclusive' counting (common in legal and contract contexts).
Can I calculate business days excluding weekends?
Yes, use the 'Business Days' mode. By default, it excludes Saturdays and Sundays. You can also manually enter specific holiday dates to exclude them from the count, making it perfect for project planning, shipping estimates, and HR calculations.
How do I add or subtract days from a date?
Switch to the 'Add / Subtract' mode. Enter a start date, choose your operation (Add or Subtract), and specify the amount of days, weeks, months, or years. The tool will instantly calculate the resulting future or past date.
Does this calculator consider leap years?
Absolutely. The calculator is built on the standard Gregorian calendar system and automatically accounts for leap years when calculating durations or performing date arithmetic involving years.
Can I print the calculation results?
Yes! We offer a specialized Popup Print feature. Click the 'Print Report' button to generate a clean, professional PDF-ready report of your calculation in a new window, free from website navigation and ads.
Is my data private?
100% Private. All calculations happen directly in your browser using Client-Side JavaScript. No data is ever sent to our servers, ensuring your dates and plans remain completely confidential.
What is the difference between 'days' and 'business days'?
'Days' refers to calendar days, including weekends and holidays (e.g., waiting for an event). 'Business days' refers to working days, typically Monday through Friday, used for calculating delivery times, invoices, and SLA deadlines.
How do I calculate age in days?
Use the 'Date to Date' mode. Enter your Date of Birth as the Start Date and today's date (or any future date) as the End Date. The tool will show your exact age in total days, as well as years, months, and days.
Why do I see different results for 'months' compared to other tools?
Month calculations can be ambiguous because months vary in length. Our tool calculates full months first (e.g., Jan 1 to Feb 1 is 1 month), and then calculates the remaining days. This provides the most human-readable and mathematically consistent 'Age-style' breakdown.
Is this tool free to use?
Yes, Days Counter is part of FreeTools Pro and is completely free to use for unlimited calculations, with no registration required.