Toolman

Time zone converters

848 time zone conversions. Each page has a live converter, a full 24-hour table and the working-hours overlap between the two zones.

Zones covered

AbbreviationOffsetName
UTCUTC+0Coordinated Universal Time
GMTUTC+0Greenwich Mean Time
ESTUTC−5Eastern Standard Time
EDTUTC−4Eastern Daylight Time
CSTUTC−6Central Standard Time
CDTUTC−5Central Daylight Time
MSTUTC−7Mountain Standard Time
MDTUTC−6Mountain Daylight Time
PSTUTC−8Pacific Standard Time
PDTUTC−7Pacific Daylight Time
AKSTUTC−9Alaska Standard Time
HSTUTC−10Hawaii Standard Time
BRTUTC−3Brasília Time
BSTUTC+1British Summer Time
CETUTC+1Central European Time
CESTUTC+2Central European Summer Time
EETUTC+2Eastern European Time
EESTUTC+3Eastern European Summer Time
MSKUTC+3Moscow Time
GSTUTC+4Gulf Standard Time
ISTUTC+5:30India Standard Time
ICTUTC+7Indochina Time
SGTUTC+8Singapore Time
HKTUTC+8Hong Kong Time
AWSTUTC+8Australian Western Standard Time
JSTUTC+9Japan Standard Time
KSTUTC+9Korea Standard Time
AESTUTC+10Australian Eastern Standard Time
AEDTUTC+11Australian Eastern Daylight Time
NZSTUTC+12New Zealand Standard Time

Why offsets are not time zones

An offset such as UTC−5 is a number. A time zone is a place plus a set of rules about when that number changes. New York is UTC−5 in winter and UTC−4 in summer; Phoenix is UTC−7 all year even though it shares a "Mountain" label with Denver. Store instants in UTC, store user preferences as an IANA zone name such as America/New_York, and let the library do the arithmetic.

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