HubTools

MST to EST

Convert Denver time (MST) to New York time (EST). DST-aware via IANA. Live, free, no signup.

Converting MST to EST

Converting time from MST (Denver, US Mountain) to EST (New York, US East) means adjusting for the offset between the two zones — and that offset can shift by an hour twice a year because Denver and New York may observe Daylight Saving Time on different schedules. The converter below uses the IANA time-zone database (America/Denver ↔ America/New_York), which carries the full DST history and ruleset. Type a time in either side, pick the date, and the matching local time on the other side updates with the correct offset for that exact day. Need to compare more than these two zones? Open the full Time Zone Converter to add up to 6 zones at once, or use the Unix Timestamp Converter for epoch-to-date arithmetic across zones.
Date
● Live
Zones
MST · Denver
GMT-6Mon, 2026-05-11
EST · New York
GMT-4Mon, 2026-05-11
24-hour overlap
Zone01234567891011121314151617181920212223
America/Denver18192021222301234567891011121314151617
America/New_York20212223012345678910111213141516171819
Each cell shows the local hour in that zone. Highlighted cells are standard 9 AM–5 PM business hours; look for columns where every row is highlighted to find shared work-hour windows.

How to use this tool

  1. 1
    Set the date
    DST rules differ between Denver and New York; pick the date you're converting for.
  2. 2
    Type the MST time
    Enter the time you have in MST (or click "Set to now" for the current moment).
  3. 3
    Read the EST time
    The EST row updates instantly with the correct local time and offset tag.
  4. 4
    Find a shared work hour
    Scroll to the 24-hour overlap grid — highlighted columns are 9-to-5 in both zones.

Frequently asked questions

What is the time difference between MST and EST?
The offset between MST (Denver) and EST (New York) is computed for the exact date you select using the browser's IANA time-zone database. Both zones may observe Daylight Saving Time on different schedules, so the gap can shift by an hour twice a year. The converter handles this automatically — type a time in either field and the other side updates with the correct offset for that date.

Related tools

Age Calculator
Calculate your exact age in years, months, days, hours, minutes, and seconds. See zodiac signs, day you were born, and a live next-birthday countdown.
Open
Age Difference Calculator
Compare the age gap between two or more people. Add up to 8 named people and view every pairwise difference plus an oldest-to-youngest ranking.
Open
Day of Week Calculator
Find what day of the week any date falls on. Get ISO week number, US week, day of year, quarter, and leap-year status.
Open
Week Number Calculator
Find the ISO 8601 and US week number for any date. Browse all 52 or 53 weeks of the year with start and end dates.
Open