Time & Dates

Time & Dates Calculators, Guides & Tools

Use free UK-friendly tools for age, birthdays, days between dates, working days, time zones, countdowns, time cards and notice period end dates.

Age Working days Time zones Notice dates

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Use the Time & Dates Calculators Guides & Tools

Calculate an exact age from a date of birth, including years, months, days, total days lived, weekday born and next birthday countdown.

Exact age Total days Next birthday

Example result 26 years Plus months, days, total weeks, birthday countdown and weekday born. Use age calculator

Time & date calculators

Choose the tool that matches the question you need answered: exact age, deadline length, working days, time zones, hours worked or a notice-period end date.

Primary tool Age Calculator Work out exact age in years, months and days, plus total days lived and next birthday countdown. Dates Days Between Dates Calculator Count calendar days between two dates, with inclusive or exclusive counting options. Time zones Time Zone Converter Convert a meeting, call or event time between common time zones with GMT/BST notes. Work dates Working Days Calculator Count working days while excluding weekends and selected UK bank holiday regions. Countdown Countdown Timer See days, hours, minutes and seconds until a chosen date and time. Hours Time Card Calculator Total weekly work hours, breaks, overnight shifts, decimal hours and estimated pay. Birthday Birthday Calculator Find your next birthday, day of the week born, age on next birthday and milestone dates. Employment dates Notice Period End Date Calculator Estimate a notice end date using calendar days, working days and UK bank holiday options.

Common date and time jobs

Time & Dates is built around everyday UK questions: how old someone is, how long a deadline lasts, how many workdays are left, or what time a meeting is elsewhere.

Check ages and birthdays Use the age and birthday calculators for exact age, milestone birthdays and days until the next birthday.

Plan deadlines Use days-between-dates and working-days calculators for projects, renewals, school dates and admin deadlines.

Handle work dates Use the notice-period and time-card tools for estimated end dates, weekly hours and pay-related planning.

UK bank holiday note

Working-day and notice-period calculations can depend on region, contract wording and whether bank holidays are counted. Use the result as an estimate and check the relevant calendar or agreement before relying on it.

Time & date guides

Read simple guides that explain the common mistakes behind date calculations, working-day counting, notice periods and time zones.

Guide How to Calculate Your Exact Age Learn how age is counted in years, months and days, and why birthdays matter in the calculation. Guide Calendar Days vs Working Days Understand the difference between total calendar days and workdays that exclude weekends or holidays. UK guide How to Count Working Days in the UK See how weekends, bank holidays and regional calendars can affect working-day totals. Work guide How to Work Out a Notice Period End Date Plain-English guide to estimating a final date while checking contract and Acas caveats. Explainer Time Zones Explained: UTC, GMT and Daylight Saving Understand UTC, GMT, BST and why the same time can land on a different date elsewhere.

Time & date glossary

Quick definitions for the terms that appear across time, deadline, calendar and working-day calculations.

GlossaryCalendar dayAny day on the calendar, including weekends and bank holidays. GlossaryWorking dayA day normally counted as a workday, depending on the context and calendar used. GlossaryBank holidayA public holiday that may affect workdays, deadlines and notice-period calculations. GlossaryLeap yearA year with an extra day in February, which can affect birthdays and date counting. GlossaryUTCThe global time standard used as the base for time-zone offsets. GlossaryGMTGreenwich Mean Time, often used for UK winter time context. GlossaryDaylight saving timeThe seasonal clock change that affects local times in many countries. GlossaryTime zoneA region using the same local time offset from UTC. GlossaryNotice periodThe time between giving notice and the estimated final date of employment. GlossaryISO weekA week-numbering system used in planning, reporting and calendars.

Plan dates and deadlines faster

Start with the age calculator for simple date questions, or use working days, time zones and notice-period tools for practical planning.

Use age calculator Count working days