Date & Time

Business Days Calculator

Count the number of working days between two dates, excluding weekends and optional public

Pregnancy

Ovulation Calculator

Calculate your ovulation date and fertile window based on your last period and cycle lengt

Date & Time

Countdown Timer Calculator

Calculate the exact days, hours, minutes and seconds remaining until any future date and t

Everyday

Date Difference Calculator

Enter a start date and end date to calculate the difference in days. Perfect for planning

Date & Time

Working Days Calculator

Calculate the number of working days between two dates, excluding weekends and optional pu

Pregnancy

Due Date Calculator

Calculate your pregnancy due date from last menstrual period (LMP) or conception date. See

Date & Time

Age Calculator

Calculate your exact age in years, months and days from your date of birth.

Math

Debt Payoff Calculator

Calculate how long it will take to pay off a debt and total interest paid with fixed month

Date & Time

Add Days to Date Calculator

Add or subtract any number of days from a date to find a future or past date instantly.

Pregnancy

Fertile Window Calculator

Calculate your fertile window and most likely ovulation date based on your cycle length.

Pregnancy

Menstrual Cycle Calculator

Track your menstrual cycle, predict next period, and calculate average cycle length from p

Date & Time

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates instantly. Supports current time

Date & Time

Calendar Week Number Calculator

Find the ISO week number of any date and see the start and end dates of that week.