Find the number of years, months, weeks, and days between two dates.
Find a future or past date by adding or subtracting years, months, weeks, and days.
Calculating days between dates accounts for varying month lengths and leap years. Results can be expressed as total days or broken into years, months, and remaining days for more context.
Calendar days count every day including weekends. Business days count only weekdays (Monday–Friday). The distinction matters for legal deadlines, financial transactions, and professional contracts.
Finding a future or past date is useful for deadline calculations, project planning, warranty expiry, and event scheduling. Adding months and years is more complex due to varying month lengths — this calculator handles all cases correctly.
Date calculators are used for pregnancy due dates, loan maturity dates, contract deadlines, event countdowns, and age verification across legal and financial contexts.