Time Tools

Thirteen precise tools for time zones, dates, countdowns, and more.

New York--:--London--:--Dubai--:--Tokyo--:--Sydney--:--

Time Zone Converter

Compare live clocks across the world. Explore overlapping work hours on the 24h timeline.

World ClockTimelineLive
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Age Calculator

Your exact age in years, months, and days. Live birthday countdown and zodiac sign.

ZodiacCountdownLife Stats
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Date Difference

Days between any two dates. Toggle between calendar days and business days instantly.

CalendarBusiness Days
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DateTime Difference

Precise time between two timestamps — hours, minutes, and seconds with a human summary.

HoursMinutesSeconds
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Unix Timestamp

Convert epoch timestamps to readable dates and back. Live counter auto-detects format.

EpochISO 8601Live
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Meeting Planner

Pick a time in your timezone and instantly see it across all your team's locations.

SchedulingMulti-ZoneBest Times
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Countdown Timer

Count down to any date or event. Save events and share via link.

EventsShareablePersistent
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World Clock

Live time in major cities worldwide. Green = work hours, amber = early/late, dark = night.

LiveAll CitiesStatus
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Stopwatch & Timer

Stopwatch with lap tracking and best/worst laps. Countdown timer with circular progress.

LapsTimerProgress Ring
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DST Checker

Is daylight saving time active in your timezone? See transition dates and offset changes.

Daylight SavingUTC OffsetTransitions
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Week Number

What ISO week is it? Day of year, quarter, year progress bar, and full week calendar.

ISO WeekDay of YearQuarter
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Timezone Overlap

Find the hours when it's work time in all your chosen cities simultaneously.

OverlapBest HoursGrid
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Work Hours

Track multiple shifts, calculate totals and earnings. Weekly summary. Export to CSV.

Time TrackingEarningsCSV ExportWeekly
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Precise tools for working with time

TimeDifference.co is a free suite of fourteen focused tools for time zones, dates, durations, and timestamps. Whether you need to schedule an international meeting, calculate how many days until a deadline, decode a Unix timestamp, or find the perfect time slot that works for a distributed team — there's a tool here for it.

Every tool runs entirely in your browser. Calculations happen locally, no data leaves your device, and the site stays fast because it is pre-rendered as static HTML and served from a global CDN.

What can you do here?

Compare current time across multiple cities on a 24-hour timeline
Schedule a meeting and convert it to every participant's local time
Count days, business days, hours, or seconds between any two moments
Calculate exact age from a date of birth, with a live birthday countdown
Build a shareable countdown for any future date or event
Track work hours, breaks, and weekly totals — export to CSV
Decode Unix timestamps to and from human-readable dates
Look up ISO week numbers, day of year, and quarter for any date
Check whether daylight saving time is currently active anywhere
Run a precise stopwatch with laps or a circular countdown timer

Free, privacy-friendly, no sign-up

No account is needed. No personal data is collected by these tools. Saved data — such as recently used tools, named countdowns, and timesheet entries — lives in your browser's local storage and never leaves your device. The site is supported by ads so the tools can stay free for everyone.

Learn more on the About page, or get in touch on the Contact page.