MST to AST Converter

Convert between Mountain Standard Time (MST) and Atlantic Standard Time (AST). Click either time field to change the time.

MST and AST time converter

MST uses UTC-07:00. AST uses UTC-04:00.

MST UTC-07:00

AST UTC-04:00

Daylight saving note: this abbreviation page uses the offset for the abbreviation in the URL. Standard and daylight variants are separate pages, such as PST/PDT or EST/EDT. City-level pages need IANA time zones such as America/Los_Angeles to switch automatically.

MST to AST chart

MST time	AST time

Convert other time zones to AST

These converters use AST as the target time zone.

ACDT to AST ACST to AST ADT to AST AEDT to AST AEST to AST AKDT to AST AKST to AST AWST to AST BST to AST CAT to AST CDT to AST CDT to AST CEST to AST CET to AST ChST to AST CST to AST CST to AST CST to AST EAT to AST EDT to AST EEST to AST EET to AST EST to AST GMT to AST HDT to AST HKT to AST HST to AST IDT to AST IST to AST IST to AST IST to AST JST to AST KST to AST MDT to AST MEST to AST MET to AST MSK to AST MST to AST NDT to AST NST to AST NZDT to AST NZST to AST PDT to AST PHT to AST PKT to AST PST to AST SAST to AST SST to AST UTC to AST WAT to AST WEST to AST WET to AST WIB to AST WIT to AST WITA to AST