MST to AEST Converter
See the current time in MST (Denver) and AEST (Sydney) side by side, the exact time difference right now, and convert any time between the two zones.
MST to AEST Converter
Uses your browser's built-in, DST-aware time-zone data.
About converting MST to AEST
Mountain Time (Denver) and Australian Eastern Time (Sydney) are in different time zones, so a meeting, call or stream that's convenient in one may be early or late in the other. The clocks above update live and account for daylight saving automatically, so the time difference you see is the real one for today — not a fixed number that goes stale twice a year.
To plan across the two, type a time into the MST box (or tap a quick preset) and read the AEST equivalent, including a "next day" or "previous day" note when the conversion crosses midnight. For any other pair of zones or cities, use the full timezone converter.
MST vs AEST: the time difference through the year
The gap between MST and AEST changes during the year because they switch to and from daylight saving on different dates.
| Period | Difference |
|---|---|
| Oct 23, 2026 – Oct 31, 2026 | AEST 17 h ahead of MST |
| Nov 1, 2026 – Mar 13, 2027 | AEST 18 h ahead of MST |
| Mar 14, 2027 – Apr 3, 2027 | AEST 17 h ahead of MST |
| Apr 4, 2027 – Oct 2, 2027 | AEST 16 h ahead of MST |
| Oct 3, 2027 – Oct 23, 2027 | AEST 17 h ahead of MST |
Daylight-saving changes in the next year
| Zone | Date | Offset | Change |
|---|---|---|---|
| MST | Nov 1, 2026 | UTC−6 → UTC−7 | Clocks go back 1 hour |
| MST | Mar 14, 2027 | UTC−7 → UTC−6 | Clocks go forward 1 hour |
| MST | Nov 7, 2027 | UTC−6 → UTC−7 | Clocks go back 1 hour |
| AEST | Apr 4, 2027 | UTC+11 → UTC+10 | Clocks go back 1 hour |
| AEST | Oct 3, 2027 | UTC+10 → UTC+11 | Clocks go forward 1 hour |
MST to AEST conversion table
| MST | AEST (when 17 h ahead) | AEST (when 18 h ahead) |
|---|---|---|
| 12:00 AM | 5:00 PM | 6:00 PM |
| 1:00 AM | 6:00 PM | 7:00 PM |
| 2:00 AM | 7:00 PM | 8:00 PM |
| 3:00 AM | 8:00 PM | 9:00 PM |
| 4:00 AM | 9:00 PM | 10:00 PM |
| 5:00 AM | 10:00 PM | 11:00 PM |
| 6:00 AM | 11:00 PM | 12:00 AM (next day) |
| 7:00 AM | 12:00 AM (next day) | 1:00 AM (next day) |
| 8:00 AM | 1:00 AM (next day) | 2:00 AM (next day) |
| 9:00 AM | 2:00 AM (next day) | 3:00 AM (next day) |
| 10:00 AM | 3:00 AM (next day) | 4:00 AM (next day) |
| 11:00 AM | 4:00 AM (next day) | 5:00 AM (next day) |
| 12:00 PM | 5:00 AM (next day) | 6:00 AM (next day) |
| 1:00 PM | 6:00 AM (next day) | 7:00 AM (next day) |
| 2:00 PM | 7:00 AM (next day) | 8:00 AM (next day) |
| 3:00 PM | 8:00 AM (next day) | 9:00 AM (next day) |
| 4:00 PM | 9:00 AM (next day) | 10:00 AM (next day) |
| 5:00 PM | 10:00 AM (next day) | 11:00 AM (next day) |
| 6:00 PM | 11:00 AM (next day) | 12:00 PM (next day) |
| 7:00 PM | 12:00 PM (next day) | 1:00 PM (next day) |
| 8:00 PM | 1:00 PM (next day) | 2:00 PM (next day) |
| 9:00 PM | 2:00 PM (next day) | 3:00 PM (next day) |
| 10:00 PM | 3:00 PM (next day) | 4:00 PM (next day) |
| 11:00 PM | 4:00 PM (next day) | 5:00 PM (next day) |
Best time to meet
- 9 AM–5 PM overlap when AEST is 17 h ahead4:00 PM–5:00 PM MST = 9:00 AM–10:00 AM AEST (1 h)
- 9 AM–5 PM overlap when AEST is 18 h ahead3:00 PM–5:00 PM MST = 9:00 AM–11:00 AM AEST (2 h)
The two zones
Mountain Time is UTC−7 in winter (MST) and UTC−6 in summer (MDT) for Denver, Salt Lake City and Calgary. Most of Arizona stays on MST (UTC−7) all year.
Sydney is on AEST (UTC+10) from April to October and on daylight-saving AEDT (UTC+11) from the first Sunday in October to the first Sunday in April. Queensland (Brisbane) stays on AEST all year.