Timezone Converter

Set a base date, time, and zone, add target IANA time zones, and compare local meeting times with dates and UTC offsets.

Compare a base time with multiple IANA zones, local dates, and UTC offsets.

Plan calls across EST, PST, IST, UTC, Europe, Asia, and Australia.

Add multiple target zones
See local date changes
Account for daylight saving

How to use Timezone Converter

Use this time zone conversion flow when a meeting, webinar, interview, class, travel call, or launch time needs date-specific local times.

1
Set the base date and time
Choose the date, local time, and starting time zone for the meeting or event. Use current time only when you are comparing right now, not a future invite.
2
Add each target time zone
Select every city or IANA zone you need to compare, such as America/New_York, Europe/London, Asia/Kolkata, or Australia/Sydney, then add it to the results panel.
3
Check offsets before sending
Read the converted time, local date, and UTC offset for each zone so day changes and daylight saving differences are caught before the invite is written.

IANA time zone selector

The selector uses browser-supported IANA time zone names, giving clearer choices than ambiguous abbreviations such as CST, IST, or PST alone.

Multi zone meeting comparison

Add several target zones to compare a meeting time across regions, making it easier to coordinate clients, teammates, interviews, classes, or webinars.

Date aware offset display

Each result shows the local date and UTC offset, which helps catch midnight crossings and daylight saving differences before a time is shared.

Current time shortcut

Use the current time button for quick live comparisons, then switch back to a specific date when planning a future call or event.

Removable target zones

Remove extra zones as the invite list changes, keeping the comparison focused on the locations that still matter.

Browser based time conversion

The date, time, and zone choices are converted in the browser page, so quick planning does not require creating an account.

Timezone Converter privacy and processing

Timezone Converter describes browser calculation, storage behavior, and account access so date-specific meeting times can be checked before they move into calendars, emails, or event pages.

Browser time conversion

Timezone Converter uses browser-supported IANA time zones to calculate local times, dates, and UTC offsets inside the page as target zones are added.

No server storage

Regular Timezone Converter use does not upload meeting times or selected zones to Rune servers during the browser session.

Guest time zone planning

Guest visitors can compare UTC, local time, EST, PST, IST, London, Tokyo, and other IANA zones without signing in.

Before You Use Timezone Converter

Review these notes before using converted meeting times in calendar invites, sales calls, interviews, classes, livestreams, or travel planning.

Privacy

Meeting times can reveal availability, travel, or client plans, so avoid entering confidential labels in nearby notes.

The converter only needs the date, time, and zones; attendee names and invite details can stay in your calendar.

Accuracy

Use city or IANA time zone names where possible, because abbreviations such as CST or IST can point to different regions.

Always set the actual meeting date, since daylight saving transitions can change offsets by one hour between regions.

Compatibility

Your browser provides the supported time zone list; older browsers may fall back to a shorter set of common zones.

Calendar apps may format 12-hour and 24-hour time differently, so confirm the copied time in the final invite.

Output

Send the local date together with the local time, especially when Asia, America, and Pacific zones cross midnight.

Include the UTC offset when sharing with technical teams, event pages, or participants who track schedules in UTC.

Limits

Timezone Converter handles one base date and time with selected browser-supported IANA target zones in the active session; recurring schedules, calendar invites, and legal deadlines should be checked in your calendar system.

Questions about Timezone Converter

Does this Timezone Converter handle daylight saving time?

Yes. It calculates from the selected date and IANA time zone rules, so daylight saving differences are reflected when the browser supports the relevant zone data.

Why should I choose an IANA time zone instead of EST or IST?

Abbreviations can be ambiguous. CST, IST, and PST may refer to different regions or seasonal rules, while IANA names such as Asia/Kolkata point to a specific zone.

Can I compare more than two time zones?

Yes. Add multiple target zones and the result area will show each local time, local date, and UTC offset beside the base zone.

Is this enough for recurring international meetings?

Use it to check a specific meeting time, then confirm recurring events in your calendar because daylight saving changes can affect future occurrences differently.