Use this MST to AWST time converter to compare US Mountain and Australia time instantly. AWST is 15 hours ahead of MST, so 9:00 AM MST becomes 12:00 AM (next day) AWST and 5:00 PM MST becomes 8:00 AM (next day) AWST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.
Use this MST to AWST converter to compare US Mountain and Australia time, check the 15 hours gap, and confirm the right slot for calls, handoffs, and deadlines. Find the best overlap for calls and meetings.
Converting between Mountain Standard Time and Australian Western Standard Time means accounting for a 15 hours gap — here's how to do it in under 10 seconds with no sign-up.
Pick the date and time in Mountain Standard Time (UTC -7) that you want to convert. Hit "Now" to load the current MST time instantly, or use "+1h" to step forward and compare.
The equivalent Australian Western Standard Time (UTC +8) time appears immediately. Since AWST is 15 hours ahead of MST, conversions often cross midnight — look for the date-change label.
Click "Copy Time" to grab the AWST result for your calendar or message. Use "+1d" to check how the conversion shifts across dates — helpful for scheduling recurring United States–Australia calls.
With 15 hours between MST and AWST, business-hours overlap is limited. This tool instantly shows which hours work on both sides, so you can lock in a meeting without a chain of "does 3 PM work for you?" emails.
A MST evening at 9 PM is already the next morning in AWST. This converter flags date changes beside the result — critical when booking flights, hitting deadlines, or scheduling across the United States–Australia corridor.
Daylight Saving adjustments can widen or narrow the MST–AWST gap by an hour. During transition weeks many people get it wrong. This converter pulls the current UTC offsets automatically, so the result is right even on the changeover day.
Product launches, sports matches, and webinars are often announced in MST. Convert the event time to AWST so you know exactly when to tune in — with a 15 hours difference, a morning event in United States falls during work hours in Australia.
Quick-reference conversion table covering every hour of the day at a glance.
Mountain Standard Time to Australian Western Standard Time full day schedule
| Mountain Standard Time | Australian Western Standard Time |
|---|---|
| 12:00 AM |
3:00 PM
|
| 1:00 AM |
4:00 PM
|
| 2:00 AM |
5:00 PM
|
| 3:00 AM |
6:00 PM
|
| 4:00 AM |
7:00 PM
|
| 5:00 AM |
8:00 PM
|
| 6:00 AM |
9:00 PM
|
| 7:00 AM |
10:00 PM
|
| 8:00 AM |
11:00 PM
|
| 9:00 AM |
12:00 AM
(next day)
|
| 10:00 AM |
1:00 AM
(next day)
|
| 11:00 AM |
2:00 AM
(next day)
|
| 12:00 PM |
3:00 AM
(next day)
|
| 1:00 PM |
4:00 AM
(next day)
|
| 2:00 PM |
5:00 AM
(next day)
|
| 3:00 PM |
6:00 AM
(next day)
|
| 4:00 PM |
7:00 AM
(next day)
|
| 5:00 PM |
8:00 AM
(next day)
|
| 6:00 PM |
9:00 AM
(next day)
|
| 7:00 PM |
10:00 AM
(next day)
|
| 8:00 PM |
11:00 AM
(next day)
|
| 9:00 PM |
12:00 PM
(next day)
|
| 10:00 PM |
1:00 PM
(next day)
|
| 11:00 PM |
2:00 PM
(next day)
|
US Mountain — Denver, Salt Lake City, most of Arizona (Arizona notably observes no DST, so it's MST year-round while its neighbours flip). Business hours 9 AM – 5 PM MT.
Explore more MST conversions for major business and travel corridors. Each page includes a 24-hour chart, time difference summary, and meeting overlap guidance.
Find the time difference from any major zone into Australian Western Standard Time. Use these pages when scheduling with Australia from a different region.
