Free · No sign-up · Instant results
Date Calculator
Calculate the exact number of days between any two dates — instantly. No account needed.
📅 Format: MM/DD/YYYY
🎂 Age Calculator
Discover your exact age in years, months, days — and even hours. Our Age Calculator gives you a complete breakdown of your life in time. Perfect for celebrating milestones or satisfying curiosity.
It also tells you exactly how many days remain until your next birthday.
Calculate My Age →📅 Format: MM/DD/YYYY
💼 Business Days Calculator
Calculate the exact number of working days between two dates, automatically excluding Saturdays and Sundays. Essential for project deadlines, invoice due dates, contract periods, and professional scheduling.
Used by freelancers, HR professionals, project managers and business owners every day.
Calculate Business Days →📅 Format: MM/DD/YYYY
🤰 Gestational Age Calculator
Find out how many weeks pregnant you are from your last menstrual period, due date, or conception date. Get instant results: exact weeks, trimester, baby milestones, and days until birth.
Used by expectant mothers and healthcare professionals to track fetal development week by week.
Calculate Gestational Age →📅 More Date Calculators
Weeks Between Dates Calculator
Find the exact number of weeks between two dates, including partial weeks. Free online weeks calculator — no sign-up, instant results.
Months Between Dates Calculator
Calculate the exact number of months between two dates, with full and partial month breakdown. Free, accurate, and instant.
Years Between Dates Calculator
Determine the exact number of years between two dates — perfect for anniversaries, contracts, and historical spans. Free and instant.
Add Days to Date
Add any number of days to a date and find the resulting date instantly. Free date addition calculator — ideal for deadlines and planning.
Subtract Days from Date
Subtract any number of days from a date to find a past date. Free date subtraction calculator — perfect for schedule and deadline tracking.
Days Until Date Calculator
Find out exactly how many days until any future date. Free countdown calculator — enter your target date and get an instant, accurate result.
Birthday Countdown
Count the exact days, hours, and minutes until your next birthday. Free birthday countdown calculator — enter your birthdate for an instant result.
What Day Was It?
Find out what day of the week any date was — past, present, or future. Instantly see if it was a Monday, a Sunday, or any other weekday. Free, no sign-up.
What Day Was I Born?
Enter your date of birth and discover what day of the week you were born. Was it a Monday, a Sunday, or mid-week Wednesday? Find out instantly — free.
⏳ Holiday Countdowns
See all holidays →También disponible en español
🇪🇸 Ver en Español →