Time Zone Converter

Pick a source and destination pair from the grid to convert times instantly with DST-aware accuracy.

About Time Zone Conversion

Our free time zone converter supports conversion between 34 time zones worldwide (second-accurate, IANA-based, DST-aware) including UTC, EST, PST, GMT, JST, Singapore, Mumbai, and more. All conversions run in your browser.

Supported Time Zones:

UTC, US zones, GMT/BST, CET/CEST, JST (Tokyo), China, SGT, Dubai, IST (Mumbai), Sydney, Auckland, and many more cities.

Pick a conversion from the grid, or use the All-in-One Timezone Converter for a visual timeline.

Related tools

Why Use a Time Zone Converter?

Coordinate internationally, schedule across zones, support global operations, and keep accurate local times.

Benefits of Time Zone Conversion

  • International Communication: Meetings and calls
  • Scheduling: Events and appointments
  • Business Operations: Global teams
  • Travel Planning: Adjust to local time
  • Coordination: Align many regions

How Time Zone Conversion Works

We compute differences with DST rules and show results in real time in your browser using IANA zones.

Supported Time Zones

  • UTC: Coordinated Universal Time
  • EST/EDT: US Eastern
  • CST/CDT: US Central
  • MST/MDT: US Mountain
  • PST/PDT: US Pacific
  • GMT/BST: London
  • CET/CEST: Central Europe
  • JST: Tokyo
  • CST: China (Shanghai)
  • GST: Gulf (Dubai)
  • IST: India (Mumbai)
  • AEDT/AEST: Sydney
  • NZDT/NZST: Auckland

When to Use a Time Zone Converter

Whenever you coordinate people or systems in different regions.

Ideal Use Cases

  • International Meetings: Schedule across zones
  • Business Operations: Global coordination
  • Travel Planning: Local arrival times
  • Communication: Calls and messages
  • Event Scheduling: Multi-region events

Time Zone Conversion Facts

Context for better scheduling.

Key Statistics

  • Roughly 24 primary longitudinal zones worldwide
  • DST changes relative offsets during the year
  • UTC is the standard reference
  • Some regions use fractional-hour offsets
  • Live conversion respects current DST rules

Best Practices

Improve accuracy when it matters.

Quality Considerations

  • Confirm DST for both locations
  • Check differences before invites
  • Remember spring/fall transitions
  • Use live conversion when possible
  • Verify critical events twice

When Not to Use

  • Historical instants without checking old DST rules
  • Far-future rules that may change
  • When legally binding time is required without authority
  • Do not use as sole legal time proof

Fast pair discovery and conversion links.

Time Zone Converter List - Convert 40+ Popular Zone Pairs Fast