AEST to MST Converter

Mountain Time (MST / MDT) is 17 hours behind Australian Eastern Time (AEST / AEDT).

Quick Reference

Australian Eastern Time
AEDT (GMT+11)

AEST starts on Apr 4, 2026

Mountain Time
MDT (GMT-6)

MST starts on Nov 1, 2026

Frequently Asked Questions

What is the difference between AEST and MST?
MST is 17 hours behind AEST.
How do I convert AEST to MST?
To convert from AEST to MST, subtract 17 hours. Use the interactive converter on this page to convert specific times.
What cities are in AEST and MST?
Cities in AEST include Sydney, Newcastle, Canberra. Cities in MST include Denver, El Paso, Albuquerque, Colorado Springs, Salt Lake City.
AEST to MST Converter | Timezone App