The live Unix epoch, and the math around it.
Convert timestamps, calculate date durations, run age math, and check the world clock — all in one fast, ad-light toolkit that runs entirely in your browser. The Unix timestamp below ticks live in every format you'd ever paste.
Live Unix Timestamp
ticking
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The toolkit
Unix Timestamp
Epoch ↔ human-readable. Auto-detects ms vs. s.
Epoch Math
Add/subtract any unit: "now + 7d", "1748876543 - 3600".
ISO 8601
Validate any timestamp; build one in every variant.
Date Duration
Years, months, weeks, weekdays between two dates.
Age Calculator
Exact age plus zodiac and next-birthday countdown.
Countdown
Live countdown to any moment, with shareable URL.
World Clock
Track current time across any cities, live-ticking.
Timezone Converter
Translate a moment between any two time zones.
Meeting Planner
Visualize business-hour overlap across teams.
Search
Jump to any city, zone, or conversion route.
Right now around the world
Open World Clock →New York
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London
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Paris
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Dubai
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Singapore
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Tokyo
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Los Angeles
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Sydney
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Browse by category
Time in any city
Current local time in 50+ world cities, with DST and offsets.
Time zone conversions
Pre-built UTC, PST, EST, IST, JST, GMT conversion pages.
Time differences
Hour gap between any two cities, year-round with DST notes.
City-to-city clocks
Two cities side by side — see both clocks at a glance.
Days until
Countdowns to holidays, events, and custom dates.
Popular conversions
Popular countdowns
See all →From the blog
UTC vs GMT — what’s the actual difference?
They overlap, but UTC and GMT aren’t the same thing. The history matters, especially if you work with logs or scientific data.
Daylight saving time, explained
Why we change the clocks, which countries don’t, and the 2026 transition dates you need.
Scheduling meetings across time zones
The five working-hour windows that cover almost any cross-continent meeting, with examples.
Frequently asked
- Is Epoch Calculator free to use?
- Yes. Every tool on Epoch Calculator runs entirely in your browser and is completely free. No sign-up, no account, and no data ever leaves your device. All time zone math happens locally using the IANA tz database, so you get accurate results without trusting us with anything personal.
- Does Epoch Calculator handle daylight saving time?
- Yes. All date and time zone calculations use the IANA time zone database via Luxon, so DST transitions are handled correctly for every zone worldwide. Whether you are converting times across continents or planning a meeting that spans a daylight saving boundary, the arithmetic accounts for each zone's specific transition rules automatically.
- What time zones are supported?
- Every IANA time zone — roughly 400 named zones covering every country and region on earth. You can search by city name, country, or zone identifier such as America/New_York or Europe/London in any tool. Common abbreviations like PST, IST, and GMT are also recognized and mapped to their canonical IANA counterparts.
- Do my saved world-clock zones sync across devices?
- No. Your saved world-clock cities are stored in your browser's local storage only. There is no account, no server sync, and no data sent anywhere. This means they stay private to your device and browser profile. If you switch browsers or clear local storage, you will need to re-add your saved zones.
- Can I share a countdown with someone?
- Yes. The countdown tool encodes the target date, time zone, and title directly in the URL as query parameters. Anyone you share the link with sees the same countdown, already configured for the same moment. No account required on either end — just copy the URL from your browser's address bar and send it.
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