Date Calculator Tools

Calculate the exact number of days, weeks, months, and years between two dates. Supports business days, weekend exclusion, and add/subtract mode.

Find exactly how many weekends, Saturdays, and Sundays are in any year. Includes monthly breakdown, leap year detection, and multi-year comparison.

Find exactly how many hours are in any month. Supports specific month/year selection, work-hours mode, and full 12-month comparison tables.

Find the exact date that was X years ago from today or any custom date. Shows full breakdown with day of week, total days, and leap year handling.

Find how many weeks are left in the current year with a live countdown. Shows days remaining, work weeks left, year progress percentage, and more.

Find how many hours are in any year. A common year has 8,760 hours; a leap year has 8,784. Includes work hours, monthly breakdown, and multi-year comparison.

Find the exact date and time X hours ago from now or any custom time. Supports decimal hours, 12/24h format, quick presets, and reverse lookup.

Find the exact date X months from today. Defaults to 6 months. Handles month-end edge cases, leap years, and includes a reverse month-counting mode.

Find how many days are left in the current year with a live countdown. Shows year progress, workdays remaining, multi-unit breakdown, and more.

Find how many weeks are in any year. A common year has 52 weeks + 1 day; a leap year has 52 weeks + 2 days. Includes work weeks, years-to-weeks converter, and ISO week info.

Find the exact date and time X hours from now. Supports decimal hours, 12/24h format, quick presets, reverse lookup, and custom base time.

Find the exact date 3 months from today. Handles month-end edge cases and leap years. Quick-switch to 1, 2, 6, 9, or 12 months.

Find the exact date 30 days from today. Supports business days mode, custom start date, reverse lookup, and common day presets.

Find the exact date 90 days ago from today. Supports business days mode, custom base date, reverse lookup, and common day presets.

Find the exact date 60 days from today. Supports business days mode, custom start date, reverse lookup, and common day presets.

Find the exact date 6 weeks (42 days) from today. Supports business weeks mode, custom start date, reverse lookup, and common week presets.

Find the exact date 90 days from today. Supports business days mode, custom start date, reverse lookup, and common day presets.

Check how many days are in any year. Includes leap year checker, year comparison table, month breakdown, hours/minutes/seconds, and year progress bar.

Estimate work weeks in a year based on workdays, weekends, holidays, vacation, and schedule. Country holiday presets, monthly breakdown, and year progress.

Check how many weeks are in any month. Includes all-months comparison table, leap-year February handling, and reverse weeks-to-months converter.

Find the exact date 45 days from today. Supports custom start dates, business days mode, and shareable results.

Find the date any number of days from today or a custom date. Business days mode, presets, reverse lookup, and shareable URLs.

Find the exact date any number of days ago from today or a custom date. Business days mode, presets, and reverse date lookup.

Find the exact date any number of weeks ago from today or a custom date. Business weeks mode, presets, and reverse lookup.

Find the current week number of the year. ISO and US week systems, reverse lookup, year progress, and custom date support.

Calculate annual work hours with 4 methods: standard weekly, daily schedule, calendar year, and adjusted with holidays/PTO. Full-time 40h/week = 2,080 hours/year.

Find the exact date any number of weeks from today, weeks ago, or from a custom date. Business weeks, extra days, step-by-step, and calendar export.

Calculate time until any date with a live countdown. Supports countdown, time-ago, and between-dates modes. Business days, event labels, quick presets.

Live spring countdown. Supports astronomical (equinox) and meteorological definitions for both Northern and Southern hemispheres. Shows days, hours, minutes, seconds.