Estimate completed pregnancy weeks and days from the first day of the last menstrual period (LMP). The tool also shows a standard 40-week due-date estimate for a 28-day cycle. It is a date-based estimate, not confirmation of pregnancy or a replacement for antenatal care.
Convert a selected local date and time between named time zones. The result includes the target date, time and the difference at that instant. Using a date matters because daylight-saving changes can alter the gap between two cities during the year.
Find completed calendar months between two dates and the days remaining after the final monthly anniversary. This tool deliberately distinguishes calendar months from a days-divided-by-30 estimate. Month-end handling is explained so the result can be reproduced.
Count elapsed calendar days between two dates and compare that with a count that includes both endpoints. This page focuses on day-count conventions for schedules, event lengths and records; it does not subtract weekends or holidays.
Compare two dates as completed years, months and days, alongside the total elapsed day count. Calendar units are useful for a period described by anniversaries, while total days are useful for an elapsed-duration record.
Sharing a birthday, zodiac label or birth month can be a fun conversation starter. It does not provide a scientifically validated relationship-compatibility score. This guide separates harmless birthday traditions from the practical questions that help two people understand each other.
A half birthday is a useful informal milestone six calendar months after your birth date. This calculator finds your first half birthday and explains its convention. It is suitable for a baby’s six-month celebration or for checking the date six months after a birthday.
Start a live countdown to local midnight at the beginning of your next birthday. After you calculate, the result updates every second in this tab. This is a celebration timer; it is not an age calculation to your original birth time.
Find the exact date and weekday of your next birthday and the age you will turn. Use this when booking a celebration or checking whether the next birthday falls on a weekday or weekend. It includes a day count, but the main result is the next birthday date.
Count the calendar days remaining until your next birthday. The result is a day count rather than a ticking timer, so it is useful for party planning, invitations and a simple daily check. Your current day is excluded from the elapsed interval.
