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Free Time Zone Calculator - Global Time Made Easy

Convert times between time zones worldwide. Schedule international meetings, coordinate global teams, and understand UTC offsets.

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Convert Time Zone

Quick Answer

Major US offsets from UTC: EST/EDT = -5/-4, CST/CDT = -6/-5, PST/PDT = -8/-7. London (GMT/BST) = 0/+1.

Key Facts about Time Zone Calculator:

  • UTC is the global standard
  • EST = UTC-5, PST = UTC-8
  • London GMT = UTC+0
  • Daylight saving changes offset
  • 24 primary time zones worldwide

Why Use Our Time Zone Calculator?

Complete time zone tools:

🌍

World Zones

All global time zones.

🔄

Conversion

Any zone to any zone.

☀️

DST Aware

Handles daylight saving.

📅

Meeting Planner

Find overlap times.

⚡

Instant Results

Get conversions immediately.

🔒

100% Private

Your data stays private.

Try Time Zone Calculator Now

How to Time Zone Calculator in 3 Easy Steps

Convert time zones:

1

Enter Time

Time and source zone.

2

Select Target

Destination time zone.

3

Get Converted

See time in new zone.

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Go Global

Convert any time zone

Schedule meetings

Coordinate teams

DST handling

Convert Time Zone
🌍
Global Time
Any zone, anytime

Common Use Cases for Time Zone Calculator

Perfect for:

Meetings

Schedule across zones.

Schedule Meeting

Travel

Know local times.

Convert Time

Teams

Coordinate globally.

Find Overlap

Frequently Asked Questions

Everything you need to know about our time zone calculator

How do I convert between time zones?

Add/subtract hour difference between zones

Add or subtract the hour difference. EST to PST: subtract 3 hours (9 AM EST = 6 AM PST). EST to London: add 5 hours (9 AM EST = 2 PM GMT).

What is UTC?

The global reference time; zones are UTC +/- hours

UTC (Coordinated Universal Time) is the primary time standard. EST = UTC-5, PST = UTC-8, London = UTC+0 (winter). All zones are expressed as offset from UTC.

How does Daylight Saving Time affect conversions?

Changes offsets by 1 hour; dates vary by region

DST shifts clocks 1 hour (spring forward, fall back). Not all regions observe DST, and dates vary globally. Always verify current offset during spring/fall.

Still have questions? Try the tool yourself!

Convert Time Zone

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