Time Zone Converter
Convert time between any two time zones, save favourite cities, and plan international meetings across multiple locations. Displays current local time for all major world time zones, automatically accounts for Daylight Saving Time (DST), and supports both 12-hour and 24-hour display formats. Ideal for remote teams, global scheduling, and international travel planning.
Source Time
Target Time
Saved Times
No saved times yet. Convert and save times to see them here.
World Clock
UTC & Time Zone Basics
UTC (Coordinated Universal Time) is the world's primary time standard — the baseline from which all time zones are calculated. Time zones are expressed as UTC offsets. For example, UTC+10:00 is 10 hours ahead of UTC (used by Sydney in winter).
Unlike GMT (Greenwich Mean Time), UTC is a modern scientific standard that does not change with DST. UTC and GMT are numerically equivalent but conceptually different.
Daylight Saving Time (DST)
DST advances clocks by 1 hour in spring ("spring forward") and moves back 1 hour in autumn ("fall back") to extend evening daylight in summer months.
- USA, Canada, EU — observe DST (most regions)
- Japan, China, India, most of Africa — do NOT observe DST
- Australia — observes DST but in opposite season to Northern Hemisphere
- DST dates differ between USA and EU by ~2–3 weeks
Key World Time Zones
Time Zone Converter Use Cases
Remote Teams
Find overlap hours when your team spans New York, London, and Singapore.
Global Meetings
Find the best meeting time across timezones without confusion over AM/PM.
Travel Planning
Convert flight arrival/departure times to your local time for travel itineraries.
Live Events
Follow live streams, launches, or sports events at the right time in your city.
Frequently Asked Questions
Related Tools
Navigating Time Zones in a Global World
Time zone management is one of the most deceptively complex challenges in software development and international collaboration. With 38 distinct UTC offsets, daylight saving rules that change annually, and half-hour and quarter-hour offsets in some regions, converting between time zones accurately requires more than simple arithmetic. Our time converter handles all IANA time zones, accounts for DST transitions, and shows conversions in real time — essential for scheduling international meetings, coordinating deployments across regions, and debugging timestamp-related issues in distributed systems.
UTC and ISO 8601: The Developer Standard
Coordinated Universal Time (UTC) is the global reference for timestamps in computing. Best practice is to store all times in UTC and convert to local time only at the presentation layer. ISO 8601 format — 2024-01-15T09:30:00Z — is the unambiguous standard for timestamp serialisation in APIs, databases, and log files. JavaScript's Date object, PostgreSQL's timestamptz type, and every modern API framework support ISO 8601 natively. Avoid storing local times without timezone information — they become ambiguous the moment your application serves users across regions.
Time in Software Architecture
Distributed systems face unique time challenges: clock skew between servers, event ordering in message queues, and cache TTL calculations all depend on accurate time handling. Use NTP for clock synchronisation, and prefer monotonic clocks for measuring durations. For scheduling recurring tasks, explore the Cron Expression Generator. Measure intervals with the Stopwatch. Calculate date differences with the Age Calculator. Convert units with the Unit Converter. Explore all tools on the homepage.