MST to AEST Converter
MST to AEST, made simple. AEST is 17 hours ahead of MST. Change the time or date in either card and the conversion follows along instantly.
Daylight saving notes
In the United States and Canada, daylight saving time runs from the second Sunday in March to the first Sunday in November. That affects Mountain Standard Time (MST).
In southern Australia, daylight saving time runs from the first Sunday in October to the first Sunday in April. That affects Australian Eastern Standard Time (AEST).
MST to AEST conversion chart
For example, a 9:00 AM MST meeting takes place at 2:00 AM AEST (+1 day). Concretely, when Denver (MST) and Sydney (AEST) set up a call, aEST is 17 hours ahead of MST.
| MST time | AEST time |
|---|---|
| 12:00 AM | 5:00 PM |
| 1:00 AM | 6:00 PM |
| 2:00 AM | 7:00 PM |
| 3:00 AM | 8:00 PM |
| 4:00 AM | 9:00 PM |
| 5:00 AM | 10:00 PM |
| 6:00 AM | 11:00 PM |
| 7:00 AM | 12:00 AM+1 day |
| 8:00 AM | 1:00 AM+1 day |
| 9:00 AM | 2:00 AM+1 day |
| 10:00 AM | 3:00 AM+1 day |
| 11:00 AM | 4:00 AM+1 day |
| 12:00 PM | 5:00 AM+1 day |
| 1:00 PM | 6:00 AM+1 day |
| 2:00 PM | 7:00 AM+1 day |
| 3:00 PM | 8:00 AM+1 day |
| 4:00 PM | 9:00 AM+1 day |
| 5:00 PM | 10:00 AM+1 day |
| 6:00 PM | 11:00 AM+1 day |
| 7:00 PM | 12:00 PM+1 day |
| 8:00 PM | 1:00 PM+1 day |
| 9:00 PM | 2:00 PM+1 day |
| 10:00 PM | 3:00 PM+1 day |
| 11:00 PM | 4:00 PM+1 day |
This chart uses the fixed MST and AEST offsets; the live converter above follows current daylight saving.
Convert MST to AEST Time Zone
Everything you need for MST to AEST — the difference, the current times, and how to plan around it.
How do I convert MST to AEST?
It takes three quick steps:
- Click the MST field on the left and pick the time you want to convert.
- The matching AEST time updates on the right automatically — there’s no button to press.
- Need a different day? Click the date field and the result follows, rolling over if it crosses midnight.
What is the time difference between MST and AEST?
AEST is 17 hours ahead of MST. In everyday terms, once you know the time on one side you just add 17 hours to get the other — so a call between Denver and Sydney is always 17 hours apart.
What time is it in AEST right now?
Right now the time in Australian Eastern Standard Time (AEST) is Tuesday, June 30, 2026 · 3:53:56 AM. It ticks every second, so you’re always looking at the live AEST clock.
What time is it in MST right now?
And in Mountain Standard Time (MST), it’s currently Monday, June 29, 2026 · 10:53:56 AM. Compare the two and the 17 hours gap is easy to see.
What's the best time for a MST–AEST call?
For example, a 9:00 AM MST meeting takes place at 2:00 AM AEST (+1 day). The trick is to aim for a slot that lands inside normal working hours on both sides. Once you’ve found a time, hit Share on the converter to copy a link with the time built in — easy to send to a colleague. Juggling three or more zones? The meeting planner highlights the hours that overlap for everyone.
How does daylight saving affect MST to AEST?
The labels MST and AEST are fixed offsets, so the result on this page is always exact. Both regions move their clocks for daylight saving on roughly the same weekends, so the 17 hours gap usually holds steady right through the year.
Why can you trust this MST to AEST converter?
Every conversion here is calculated from the IANA time zone database — the same source your phone, computer, and browser rely on. Plenty of tools hard-code a single offset, which quietly goes wrong whenever a region changes its rules or flips for daylight saving. We follow the real rules instead, so MST to AEST stays accurate for today and for any past or future date you type in.
Convert MST to other time zones
- UTC Coordinated Universal Time
- GMT Greenwich Mean Time
- EST Eastern Standard Time
- EDT Eastern Daylight Time
- CST Central Standard Time
- CDT Central Daylight Time
- MDT Mountain Daylight Time
- PST Pacific Standard Time
- PDT Pacific Daylight Time
- AKST Alaska Standard Time
- AKDT Alaska Daylight Time
- HST Hawaii Standard Time
- AST Atlantic Standard Time
- ADT Atlantic Daylight Time
- NST Newfoundland Standard Time
- NDT Newfoundland Daylight Time
- BRT Brasília Time
- ART Argentina Time
- WET Western European Time
- WEST Western European Summer Time
- CET Central European Time
- CEST Central European Summer Time
- EET Eastern European Time
- EEST Eastern European Summer Time
- BST British Summer Time
- IST Irish Standard Time
- MSK Moscow Standard Time
- TRT Turkey Time
- WAT West Africa Time
- CAT Central Africa Time
- EAT East Africa Time
- SAST South Africa Standard Time
- GST Gulf Standard Time
- IST Israel Standard Time
- IDT Israel Daylight Time
- IST India Standard Time
- PKT Pakistan Standard Time
- BDT Bangladesh Standard Time
- ICT Indochina Time
- WIB Western Indonesian Time
- WITA Central Indonesian Time
- WIT Eastern Indonesian Time
- CST China Standard Time
- HKT Hong Kong Time
- SGT Singapore Time
- PHT Philippine Time
- JST Japan Standard Time
- KST Korea Standard Time
- AWST Australian Western Standard Time
- ACST Australian Central Standard Time
- ACDT Australian Central Daylight Time
- AEST Australian Eastern Standard Time
- AEDT Australian Eastern Daylight Time
- NZST New Zealand Standard Time
- NZDT New Zealand Daylight Time
Convert to AEST from other time zones
- UTC Coordinated Universal Time
- GMT Greenwich Mean Time
- EST Eastern Standard Time
- EDT Eastern Daylight Time
- CST Central Standard Time
- CDT Central Daylight Time
- MST Mountain Standard Time
- MDT Mountain Daylight Time
- PST Pacific Standard Time
- PDT Pacific Daylight Time
- AKST Alaska Standard Time
- AKDT Alaska Daylight Time
- HST Hawaii Standard Time
- AST Atlantic Standard Time
- ADT Atlantic Daylight Time
- NST Newfoundland Standard Time
- NDT Newfoundland Daylight Time
- BRT Brasília Time
- ART Argentina Time
- WET Western European Time
- WEST Western European Summer Time
- CET Central European Time
- CEST Central European Summer Time
- EET Eastern European Time
- EEST Eastern European Summer Time
- BST British Summer Time
- IST Irish Standard Time
- MSK Moscow Standard Time
- TRT Turkey Time
- WAT West Africa Time
- CAT Central Africa Time
- EAT East Africa Time
- SAST South Africa Standard Time
- GST Gulf Standard Time
- IST Israel Standard Time
- IDT Israel Daylight Time
- IST India Standard Time
- PKT Pakistan Standard Time
- BDT Bangladesh Standard Time
- ICT Indochina Time
- WIB Western Indonesian Time
- WITA Central Indonesian Time
- WIT Eastern Indonesian Time
- CST China Standard Time
- HKT Hong Kong Time
- SGT Singapore Time
- PHT Philippine Time
- JST Japan Standard Time
- KST Korea Standard Time
- AWST Australian Western Standard Time
- ACST Australian Central Standard Time
- ACDT Australian Central Daylight Time
- AEDT Australian Eastern Daylight Time
- NZST New Zealand Standard Time
- NZDT New Zealand Daylight Time
Frequently asked questions
How many hours ahead of MST is AEST?
AEST is 17 hours ahead of MST — a fixed 17 hours difference, since both are fixed-offset labels.
What time is it in AEST when it's 12:00 PM MST?
When it's 12:00 PM (noon) MST, it's 5:00 AM AEST the next day.
Do MST or AEST use daylight saving time?
Mountain Standard Time (MST) observes daylight saving, alternating with MDT; Australian Eastern Standard Time (AEST) observes daylight saving, alternating with AEDT.
Why might the real-world MST–AEST difference change during the year?
The labels MST and AEST are fixed offsets, so this converter is always exact. But Mountain Standard Time's region switches between standard and summer time, so for part of the year you may actually want MDT to AEST. Always check which label a region is currently using before you schedule.