What is the difference between EST and EDT?

EST is Eastern Standard Time, UTC−5, used from early November to mid-March. EDT is Eastern Daylight Time, UTC−4, used from mid-March to early November. The zone is called Eastern Time (ET) year-round.

How do I convert 3 PM EST to PST?

Subtract 3 hours. 3 PM EST is 12 PM PST. This works the same during DST because both zones shift together.

Is the converter accurate for future dates?

Yes. The converter uses the IANA time zone database, which contains DST rules for years ahead. It correctly handles the 2026 and 2027 transitions.

Why does India have a 30-minute offset?

India Standard Time is UTC+5:30, a half-hour offset chosen after independence to keep the country on a single time zone despite its wide geography.

What happens to converted times during the fall-back clock change?

At 2:00 AM local on the first Sunday of November, clocks go back to 1:00 AM. Times between 1:00 AM and 2:00 AM occur twice. The converter uses the earlier occurrence for standard time and the later for daylight time, matching how most systems handle the ambiguity.

When is the next DST change for Eastern Time?

The next change is Sunday 8 March 2026 at 2:00 AM local. Clocks spring forward to 3:00 AM, and EST becomes EDT. After that, the next fall-back is Sunday 1 November 2026.

EST Time Converter

How the Conversion Works

Eastern Standard Time sits five hours behind Coordinated Universal Time. Noon UTC is 7 AM EST. That relationship never changes for EST itself. What does change is whether the Eastern Time zone is observing EST or EDT.

The most common mistake is forgetting that "EST" and "EDT" are not the same offset. EST is UTC−5. EDT is UTC−4. Grab the wrong one and your meeting starts an hour early or late.

Check the date. If it falls between the second Sunday of March and the first Sunday of November, use EDT (UTC−4). Otherwise, use EST (UTC−5).

Converting to US Time Zones

The continental US time zones all trail Eastern Time.

EST to Pacific (PST/PDT): Subtract 3 hours. 2 PM EST is 11 AM PST. EST to Central (CST/CDT): Subtract 1 hour. 2 PM EST is 1 PM CST. EST to Mountain (MST/MDT): Subtract 2 hours. 2 PM EST is 12 PM MST.

These offsets stay the same during DST because all four zones shift together. When it is EDT, Pacific is still 3 hours behind, but now it is PDT. The relative difference holds.

Converting to European Time

Europe runs ahead of Eastern Time.

EST to GMT: Add 5 hours. 9 AM EST is 2 PM GMT. EST to CET (Central European Time): Add 6 hours. 9 AM EST is 3 PM CET. EST to BST (British Summer Time): Add 5 hours. BST is UTC+1, so the offset matches GMT.

The trap: Europe and North America do not switch clocks on the same dates. Europe moves forward the last Sunday of March, later than the US. For roughly two weeks in March, the gap between Eastern Time and Central European Time shrinks to 5 hours instead of 6. The converter adjusts for this. You doing it by hand will miss it.

Converting to Asian Time

Asia sits far ahead of Eastern Time.

EST to IST (India Standard Time): Add 10 hours 30 minutes. 9 AM EST is 7:30 PM IST. EST to JST (Japan Standard Time): Add 14 hours. 9 AM EST is 11 PM JST. EST to CST (China Standard Time): Add 13 hours. 9 AM EST is 10 PM CST.

India's half-hour offset causes the most errors. Many people add 10 hours when they should add 10.5. A 9 AM EST call lands at 7:30 PM IST, not 7 PM. Miss those 30 minutes and you schedule a meeting nobody attends.

Converting to Australian Time

Australia's three time zones are all far ahead. Their DST runs opposite to the Northern Hemisphere.

EST to AEST (Australian Eastern Standard Time): Add 16 hours. 9 AM EST is 1 AM AEST the next day. EST to ACST (Australian Central Standard Time): Add 15.5 hours. EST to AWST (Australian Western Standard Time): Add 13 hours.

When it is summer in the US (EDT), it is winter in Australia. The offsets change by one hour in the opposite direction. Check the date for both zones before you do the math.

DST Considerations: When EST Becomes EDT

The Eastern Time zone changes twice a year. In 2026, the shifts happen on these dates:

Spring forward: Sunday 8 March 2026, 2:00 AM local. Clocks go to 3:00 AM. EST (UTC−5) becomes EDT (UTC−4). Fall back: Sunday 1 November 2026, 2:00 AM local. Clocks go to 1:00 AM. EDT (UTC−4) becomes EST (UTC−5).

During EDT, every conversion shifts by one hour. EST to London is 5 hours ahead. EDT to London is 4 hours ahead. The same applies to every other zone. If you are converting for a future date, confirm the DST status for both your zone and the target zone.

For the full schedule of exact dates each year, see the EST DST Dates page.

Tips for Accurate Time Conversion

Always pin the conversion to a date. A conversion for 15 January is not the same as one for 15 July. On 15 January 2026, relative to EST: London is 5 hours ahead, Mumbai is 10.5 hours ahead, Tokyo is 14 hours ahead. On 15 July 2026, relative to EDT: London is 5 hours ahead, Mumbai is 9.5 hours ahead, Tokyo is 13 hours ahead.

Stop writing "EST" in summer. Many calendar invites label meetings as "9 AM EST" even in July. That is EDT. The person receiving the invite may interpret it as UTC−5 and show up an hour late. Write "ET" if you are unsure.

Use the tool for dates near DST transitions. The clock change happens at 2:00 AM local. Times between 1:00 AM and 2:00 AM on the day of the fall-back occur twice. The converter handles this. Manual math does not.

Check the target zone's DST rules. Not every zone that uses "CST" or "BST" follows the same schedule. China Standard Time (UTC+8) never changes. British Summer Time (UTC+1) does. The converter uses the IANA database for each zone.

When in doubt, send UTC. If you send a meeting invitation with the UTC time, everyone converts to their local time correctly. Many scheduling tools now default to UTC for international events.

For a full breakdown of all offset calculations and edge cases, see the EST Offsets page. For scheduling advice across multiple zones, see Scheduling Across Time Zones.