MST to EST Converter
Convert time between Mountain Standard Time (MST) and Eastern Time (EST/EDT).
Convert a specific time
- IndiaIST, UTC+5:30
- Eastern Time – New YorkEDT, UTC-4
- Central Time – ChicagoCDT, UTC-5
- Mountain Time – DenverMDT, UTC-6
- Arizona – PhoenixMST, UTC-7
- Pacific Time – Los AngelesPDT, UTC-7
- Mexico CityCST, UTC-6
- Saskatchewan – ReginaCST, UTC-6
- UTC / GMTUTC, UTC+0
- United Kingdom – LondonBST, UTC+1
- Central Europe – Paris, BerlinCEST, UTC+2
- Gulf – DubaiGST, UTC+4
- SingaporeSGT, UTC+8
- Japan – TokyoJST, UTC+9
- Australia Eastern – SydneyAEST, UTC+10
- EST (always UTC-5)Fixed offset, no DST
- CST (always UTC-6)Fixed offset, no DST
- MST (always UTC-7)Fixed offset, no DST
- PST (always UTC-8)Fixed offset, no DST
- IndiaIST, UTC+5:30
- Eastern Time – New YorkEDT, UTC-4
- Central Time – ChicagoCDT, UTC-5
- Mountain Time – DenverMDT, UTC-6
- Arizona – PhoenixMST, UTC-7
- Pacific Time – Los AngelesPDT, UTC-7
- Mexico CityCST, UTC-6
- Saskatchewan – ReginaCST, UTC-6
- UTC / GMTUTC, UTC+0
- United Kingdom – LondonBST, UTC+1
- Central Europe – Paris, BerlinCEST, UTC+2
- Gulf – DubaiGST, UTC+4
- SingaporeSGT, UTC+8
- Japan – TokyoJST, UTC+9
- Australia Eastern – SydneyAEST, UTC+10
- EST (always UTC-5)Fixed offset, no DST
- CST (always UTC-6)Fixed offset, no DST
- MST (always UTC-7)Fixed offset, no DST
- PST (always UTC-8)Fixed offset, no DST
Time Difference
Mountain Time is 2 hours behind Eastern Time right now.
- Now until Nov 1, 2026: Mountain Time is 2 hours behind Eastern Time (MDT → EDT).
- Nov 1, 2026 – Nov 1, 2026: Mountain Time is 1 hour behind Eastern Time (MDT → EST).
- Nov 1, 2026 – Mar 14, 2027: Mountain Time is 2 hours behind Eastern Time (MST → EST).
- Mar 14, 2027 – Mar 14, 2027: Mountain Time is 3 hours behind Eastern Time (MST → EDT).
- From Mar 14, 2027: Mountain Time is 2 hours behind Eastern Time (MDT → EDT).
Mountain Time is on MDT right now, not MST
Eastern Time is on EDT right now, not EST
Best time to call
Convenient overlapping hours on Saturday, September 19, 2026.
| MST (Mountain Time) | EDT (Eastern Time) |
|---|---|
| 9:00 AM | 11:00 AM |
| 10:00 AM | 12:00 PM |
| 11:00 AM | 1:00 PM |
| 12:00 PM | 2:00 PM |
These hours fall within 9 AM–5 PM in both places.
Convert another time zone Plan a meeting across MST and ESTMST to EST conversion table
For Saturday, September 19, 2026 in Mountain Time.
| MDT | EDT |
|---|---|
| 12:00 AM | 2:00 AM |
| 1:00 AM | 3:00 AM |
| 2:00 AM | 4:00 AM |
| 3:00 AM | 5:00 AM |
| 4:00 AM | 6:00 AM |
| 5:00 AM | 7:00 AM |
| 6:00 AM | 8:00 AM |
| 7:00 AM | 9:00 AM |
| 8:00 AM | 10:00 AM |
| 9:00 AM | 11:00 AM |
| 10:00 AM | 12:00 PM |
| 11:00 AM | 1:00 PM |
| 12:00 PM | 2:00 PM |
| 1:00 PM | 3:00 PM |
| 2:00 PM | 4:00 PM |
| 3:00 PM | 5:00 PM |
| 4:00 PM | 6:00 PM |
| 5:00 PM | 7:00 PM |
| 6:00 PM | 8:00 PM |
| 7:00 PM | 9:00 PM |
| 8:00 PM | 10:00 PM |
| 9:00 PM | 11:00 PM |
| 10:00 PM | 12:00 AM(next day) |
| 11:00 PM | 1:00 AM(next day) |
About these time zones
Mountain Standard Time (MST)
Mountain Standard Time (MST) is UTC-7. Denver, Salt Lake City, Alberta and most of the Mountain region use MST in winter and Mountain Daylight Time (MDT, UTC-6) in summer. Arizona (except the Navajo Nation), Sonora, several other Mexican states, Yukon and parts of British Columbia use UTC-7 all year, so in summer they match Pacific Daylight Time.
Eastern Standard Time (EST)
Eastern Standard Time (EST) is UTC-5. Most places on Eastern Time use EST only in winter; from the second Sunday in March to the first Sunday in November they observe Eastern Daylight Time (EDT, UTC-4). People often write “EST” all year when they mean Eastern Time, so check which one is in effect.
MST to EST FAQs
What time is it in EST when it is 9 AM MST?
On Saturday, September 19, 2026, 9:00 AM MDT is 11:00 AM EDT in Eastern Time.
How many hours ahead is MST from EST?
It depends on the time of year because of daylight saving time. Now until Nov 1, 2026: Mountain Time is 2 hours behind Eastern Time (MDT → EDT). Nov 1, 2026 – Nov 1, 2026: Mountain Time is 1 hour behind Eastern Time (MDT → EST).
Should I use EST or EDT?
Eastern Time is on EDT (UTC-4) on Saturday, September 19, 2026. Many people write “EST” all year, but strictly EST means Eastern Standard Time (always UTC-5). This converter follows the real local time in Eastern Time, including daylight saving time.
What is the best time for a call between MST and EST?
On Saturday, September 19, 2026, good options are 9:00 AM MDT (11:00 AM EDT), 10:00 AM MDT (12:00 PM EDT), 11:00 AM MDT (1:00 PM EDT), 12:00 PM MDT (2:00 PM EDT). These fall within normal 9 AM–5 PM working hours in both places.
Does MST change for daylight saving time?
The region changes: Mountain Time switches between MST and MDT, so conversions depend on the date. MST itself always means UTC-7.
Does EST change for daylight saving time?
The region changes: Eastern Time switches between EST and EDT, so conversions depend on the date. EST itself always means UTC-5.