Compare times across the world - move the slider to explore
The When2Sync Timezone Converter is a free, DST-aware tool that compares the current (or any chosen) time across up to five cities at once. Search any city, IANA identifier, or abbreviation - ET, EDT, PST, AEDT, GMT, IST, JST, CET, BST - then drag the slider to explore any time of day. No sign-up required.
Use the date picker to check times for any future or past date with correct daylight saving time offsets - EDT in summer, EST in winter, AEDT in Australian summer, AEST in winter - all calculated automatically from the IANA timezone database. Pair it with the free group scheduling tool to find the perfect meeting time across timezones.
Ideal for remote teams scheduling across continents, freelancers coordinating with international clients, and families planning gatherings across time differences. Check whether a proposed meeting time lands in business hours across New York, London, and Sydney simultaneously - or verify how a daylight saving transition affects those offsets before sending a calendar invite. Need to find a time that works for a whole group? Use the free When2Sync group scheduler or compare it to other free options on our When2Meet alternatives page.