Welcome to InstantAgeCalculator

Discover the date that was exactly 100 days before any chosen start date.

Quickly find the date exactly 100 days from any chosen start date.

Find dates 120 days in the future and 120 days in the past from a start date.

Find the date & year it was X years or days ago. Defaults to 17 years.

Find out the exact date for any number of days from today (defaults to 28).

Calculate a future date from June 20th, or any other date and day interval.

Convert hours and minutes (e.g., 4h 26m) to total minutes. Versatile time converter.

Calculate the exact date 6 weeks from any start date. Also supports other week intervals.

Find the date 60 days before today or any start date. Also supports other intervals.

Instantly see what time it will be 8 hours from the current time. Includes dynamic display and calculator link.

Find the date X months ago from today. Defaults to 8 months.

Find the date X months from today. Defaults to 8 months.

Detailed guide for calculating the duration between 8am and 1pm. Answers "how many hours".

Find the month and year that was 9 months before August or any chosen month/year.

Find the exact date 9 months from today, plus related future and past date info.

Find out what date was 90 days ago from today using our date calculator.

Find the exact date 90 days from January 6, 2025 or any custom date.

Estimate when you conceived based on due date, LMP, or intercourse date.

Add or subtract time durations (hours, minutes, seconds) easily.

Calculate future dates by adding months to a specific start date.

Calculate future dates by adding a specified number of weeks to a start date.

Convert standard AM/PM time to military (24-hour) format instantly.

Track your baby's growth from week 4 to 40 with fun, real-life size comparisons.

Find the number of months between two dates. Useful for tracking durations.

Calculate the time passed between two dates or times in various units.

View today's date, understand calendar systems, and explore date formats.

View your current local time, date, day of the week, and detected time zone.

Create a personalized countdown with custom image/video backgrounds, text, and styles.

Find the day of the week (e.g., Monday) for any given date.

Calculate the duration (days, weeks, months, years) between two dates.

Understand various date of birth formats (DD/MM/YYYY, MM/DD/YYYY) used globally.

Learn to use the DATEDIF function in Excel to calculate date differences (days, months, years).

Understand how day duration (daylight hours) changes with seasons and location.

Live counter for days since Thanksgiving and compare with other holidays.

Build your own “days till countdown” timer for any event, with customization options.

Convert any number of days into the equivalent total hours. Defaults to 21 days.

Convert any number of days into the equivalent total minutes.

Convert any number of days into the equivalent total seconds.

Estimate your pregnancy due date based on LMP and cycle length.

Estimate your fertile window using your LMP and cycle length to find your best days to conceive.

Calculate the hours and minutes between two specified times (e.g., 9 AM to 5 PM).

Calculate the exact future time by adding a specific number of hours to the current or a chosen time.

Convert hours (including decimals) to total minutes.

Convert military (24-hour) time to standard AM/PM time format easily.

Calculate hours between two military times, e.g., 23:45 to 18:01 (next day).

Calculate the exact future time by adding minutes to the current or a chosen time.

Convert minutes to hours, shown as decimal and hours/minutes.

Estimate your ovulation date and fertile window based on LMP and cycle length.

Explore fetal development and common symptoms week by week during pregnancy.

Calculate sunrise, sunset, daylight duration, solar noon, and twilight times for any date and location.

Calculate work hours including breaks. Ideal for timesheets and payroll.

Convert between various time units like seconds, minutes, hours, days, and weeks.

Calculate the duration between two dates and times (days, hours, minutes, seconds).

Calculate a past date by 10, 12, or 40 weeks from any chosen start date.

Add or subtract any number of weeks from or before a specific start date.

Find out what time it will be X hours from now or any specific start time.