Runs fully in your browser. Inputs stay on your device. See recent fixes on changelog.
Days Between Dates Calculator
Count the exact number of days between two dates.
FreeRuns in browserdays between datescount days
Cmd/Ctrl+Enter Primary actionCmd/Ctrl+Shift+L Load sampleCmd/Ctrl+Shift+X Clear/resetCmd/Ctrl+Shift+C Copy result
About Days Between Dates Calculator
Count the exact number of days between two dates online for free. See results in days, weeks and days, and total hours for precise duration measurement. Uses precise mathematical formulas with clear, formatted results. Input validation prevents errors and guides correct usage, ensuring reliable computations every time. Everything runs client-side in your browser for maximum speed and privacy — no data is sent to any server, and no signup is required.
Related tools: Date Difference Calculator, Months Between Dates Calculator, Business Days Calculator
How to Use Days Between Dates Calculator
- Fill in the required input fields with your values.
- Click Calculate to run the computation.
- View the results below the form.
Frequently Asked Questions
What is Days Between Dates Calculator?
Count the exact number of days between two dates online for free. See results in days, weeks and days, and total hours for precise duration measurement.
How are calculations performed?
Calculations use precise mathematical formulas implemented in JavaScript. The underlying formulas are well-documented and validated against known reference values to ensure correctness.
Can I use decimal values?
Yes, all input fields accept decimal numbers with full floating-point precision. You can enter values with as many decimal places as you need and the tool will compute accurate results.
Are the formulas used shown?
Where applicable, the tool displays the formula or methodology used so you can verify the computation yourself. This transparency helps you understand and trust the results.
Is Days Between Dates Calculator free to use?
Yes, this calculator is completely free to use. No account or signup is needed, and all computations run locally in your browser without any restrictions.
Is my data safe when using Days Between Dates Calculator?
Absolutely. Every calculation runs locally in your browser. No input data is transmitted to any server, ensuring your numbers stay private.