Timezone Converter

Timezone Converterの無料・高速・高精度ツール

Converted Time

Current Time Around the World

世界時計・タイムゾーン時差変換 — 国際オンライン会議・旅行の時差計算

瞬時の時差比較と標準時

日本標準時(JST / UTC+9)を基準に、アメリカ東部時間(EST/EDT)、太平洋時間(PST/PDT)、協定世界時(UTC)、ロンドン(GMT/BST)、中央ヨーロッパ時間(CET/CEST)など、世界各都市の現在時刻と時差を直感的に比較・変換できます。サマータイム(夏時間)も自動考慮されます。

Frequently Asked Questions

India Standard Time (IST, UTC+5:30) is 10 hours and 30 minutes ahead of Eastern Standard Time (EST, UTC-5) in winter, and 9 hours and 30 minutes ahead of Eastern Daylight Time (EDT, UTC-4) in summer. For example, 7:00 PM IST is 8:30 AM EST or 9:30 AM EDT.

Pacific Standard Time (PST, UTC-8) is 13 hours and 30 minutes behind IST (UTC+5:30) in winter. During summer (PDT, UTC-7), Pacific time is 12 hours and 30 minutes behind IST. For example, 5:00 PM PST is 6:30 AM IST the next day.

To convert UTC to IST, simply add 5 hours and 30 minutes to the UTC time. For instance, 12:00 PM (Noon) UTC equals 5:30 PM IST on the exact same date.

To convert EST to IST, add 10 hours and 30 minutes to the Eastern Standard Time (or 9 hours and 30 minutes during EDT summer time). For example, 9:00 AM EST is 7:30 PM IST.

India Standard Time (IST, UTC+5:30) is 11 hours and 30 minutes ahead of Central Standard Time (CST, UTC-6) in winter, and 10 hours and 30 minutes ahead of Central Daylight Time (CDT, UTC-5) in summer.

UTC (Coordinated Universal Time) is the global atomic time standard, while GMT (Greenwich Mean Time) is a specific time zone based on longitude 0°. In practice, UTC and GMT display the exact same time.

There are 39 official UTC offsets globally. Including half-hour offsets (like IST at UTC+5:30) and 45-minute offsets (like Nepal at UTC+5:45), the IANA database tracks over 400 distinct regional time zones.

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