TimeCal.net — Date & Time Calculators

Future & Past Date Calculator

Add or subtract any number of days, weeks, months, or years from a date. Get the exact result date with its day of the week, week number, and leap-year details. Useful for deadlines, expiry dates, countdowns, and historical research.

Example: 90 days from today

Time Span Calculator

Calculate the exact duration between any two dates in years, months, weeks, and days. Accepts keywords like "today" and "tomorrow" as input. Ideal for age calculations, project durations, and anniversary countdowns.

Example: Days until March 23 next year

Days Until Calculator

Count exactly how many days remain until any date or event. Built-in countdowns for Christmas, Halloween, Thanksgiving, Easter, and more — automatically targets the next occurrence. Includes working days, live countdown timer, and detailed date facts.

Example: Days until Christmas

Days Ago Calculator

Find out how many days have passed since any date or event. Built-in lookups for Christmas, Halloween, Thanksgiving, Easter, and more — automatically targets the most recent occurrence. Includes working days, live elapsed timer, and detailed date facts.

Example: Days since Christmas

Half-Birthday Calculator

Find the date exactly 183 days after any birthday — your half-birthday. Handles leap years and works for any birth date from any year. A fun milestone for kids, adults, and celebrations at the halfway point of the year.

Example: Half-birthday for someone born today

Military Time Converter

Convert any military time (24-hour clock) to standard AM/PM notation instantly. See step-by-step explanations, a full conversion chart, and learn the rules for reading military time aloud.

Example: What is 1700 military time?

AM/PM to Military Time Converter

Convert any AM/PM time to 24-hour clock or military time notation. Enter hours, minutes, and AM/PM to get the military equivalent with step-by-step explanations and a full conversion chart.

Example: What is 5:00 PM in military time?

Day and Night World Map

See which parts of the world are currently in daylight and which are in darkness. The map updates every second based on the real-time position of the Sun, showing the terminator line, Sun, and Moon positions.

What Day of the Week Calculator

Find out what day of the week any date falls on — past or future. Browse full month and year calendars with weekdays for every date. Works from 1900 to 2041.

Example: What day is today?

Hours From Now Calculator

Find out what time it will be in any number of hours from now, or what time it was hours ago. Shows both AM/PM and 24-hour formats with midnight crossing detection.

Example: 8 hours from now

Minutes From Now Calculator

Find out what time it will be in any number of minutes from now, or what time it was minutes ago. Shows AM/PM and 24-hour formats with automatic midnight crossing.

Example: 30 minutes from now

Leap Year Calculator

Check if any year is a leap year, find the next and last leap years, and browse the complete list from 1800 to 2400. Learn the rules behind leap years and why they exist.

Example: Is 2026 a leap year?

Day & Week Number Calculator

Find out what week and day of the year it is today. See how many weeks, days, and working days are in any year, with a complete week number calendar and progress tracking.

Example: Week & day numbers for 2026

Age Calculator

Calculate your exact age in years, months, days, hours, and seconds. Find your zodiac sign, Chinese zodiac, generation, birthstone, and countdown to your next birthday.

Example: Born in 1990

Epoch & Unix Timestamp Converter

Convert Unix timestamps to dates and vice versa. Live epoch clock, Discord timestamp generator, and code snippets for every language.

Example: Timestamp 946684800 (Y2K)

U.S. Holidays

Exact dates, countdowns, and info for every major U.S. holiday. See when Easter, Thanksgiving, Christmas, and 18 more holidays fall for any year from 2020 to 2035.

Example: When is Easter?