Date & time
Age, days between dates, working hours and other time calculations.
Age Calculator
Your age is more than a number on a birth certificate — it's the exact span of years, months and days since you were born, and knowing it precisely matters for official forms, age limits and milestone planning. Enter your date of birth and this calculator instantly works out your calendar age, broken down into years, months and days, plus the total number of days you've lived. Leap years and whether your birthday has already happened this year are accounted for automatically, so the result is always exact.
➕Add to Date Calculator
Want to know what date it will be in 30 days, 6 weeks or 3 months? Enter your start date, the amount and the unit, and the calculator adds it up exactly according to the calendar, including leap years and months of different lengths.
📆Days Between Dates Calculator
Enter a start and end date to see exactly how many days and weeks lie between them — useful for a deadline, contract duration or countdown date.
⏱️Hours Calculator
This hours calculator helps you quickly convert hours, minutes, and seconds into total seconds or decimal hours. Perfect for freelancers, managers, and anyone tracking time.
🗓️Months Between Dates Calculator
Unlike a simple day count, this expresses the duration between two dates as full months plus the remaining days — exactly how a rental or contract period is usually described.
⏱️Time Unit Converter
How many seconds are in a day, how many weeks in a month or how many minutes in a year? Convert any time unit exactly, from milliseconds to years. Months and years use their average length, so weeks and months always line up.
💼Working Days Calculator
For project planning or a delivery deadline, often only working days count. Enter a start and end date to see the number of Monday-to-Friday days.