Time Zone Converter
Free time zone calculator and converter: compare any cities for any date with DST-aware offsets, 24-hour tables and overlapping meeting hours.
How to Convert Time Zones
Choose any two cities or named time zones, then select the date and time you need to convert. The page starts with London and New York, but both locations can be replaced without leaving the generic converter.
Each row represents the same instant in a different IANA time zone. Offsets are recalculated for the selected date, so daylight-saving changes and fractional-hour zones are reflected by the browser's installed time-zone data.
Add and reorder up to 12 locations for international planning. The 24-hour table and overlapping-hours suggestions help compare a full day, while dedicated city-pair pages remain available for common routes.
Frequently Asked Questions
- Does this time zone converter account for daylight saving time?
- City and regional selections do. Their IANA offsets are requested for the selected date, so available daylight-saving rules are reflected. Explicit abbreviations such as PST or PDT are labeled fixed offsets; choose a city such as Los Angeles when you want seasonal changes applied automatically.
- Can I compare more than two cities or time zones?
- Yes. You can add and reorder up to 12 distinct locations. The first two locations drive the detailed difference, meeting-time suggestions, and 24-hour comparison table.
- How are the suggested meeting times calculated?
- The converter looks for hours that overlap typical daytime working hours in the first two locations. Treat the suggestions as planning aids and confirm each participant's actual availability.
- Can I convert a future or past date?
- Yes. Choose a calendar date and adjust the time. The converter then applies the offsets available for that date instead of assuming today's offset is permanent.
Related free tools
Current UTC offsets in major cities
Each row shows the UTC offset a city uses right now, whether daylight saving time (DST) is in effect, and the next date its clocks change.
| City | Time zone | UTC offset now | DST status | Next clock change |
|---|---|---|---|---|
| London | BST | UTC+1 | DST in effect | 25 October 2026: clocks go back 1 hour |
| New York | EDT | UTC-4 | DST in effect | 1 November 2026: clocks go back 1 hour |
| Los Angeles | PDT | UTC-7 | DST in effect | 1 November 2026: clocks go back 1 hour |
| Chicago | CDT | UTC-5 | DST in effect | 1 November 2026: clocks go back 1 hour |
| Toronto | EDT | UTC-4 | DST in effect | 1 November 2026: clocks go back 1 hour |
| São Paulo | BRT | UTC-3 | No DST | None in the next 12 months |
| Paris | CEST | UTC+2 | DST in effect | 25 October 2026: clocks go back 1 hour |
| Berlin | CEST | UTC+2 | DST in effect | 25 October 2026: clocks go back 1 hour |
| Dubai | GST | UTC+4 | No DST | None in the next 12 months |
| Mumbai | IST | UTC+5:30 | No DST | None in the next 12 months |
| Singapore | SGT | UTC+8 | No DST | None in the next 12 months |
| Hong Kong | HKT | UTC+8 | No DST | None in the next 12 months |
| Tokyo | JST | UTC+9 | No DST | None in the next 12 months |
| Sydney | AEDT | UTC+11 | DST in effect | 4 April 2027: clocks go back 1 hour |
| Auckland | NZDT | UTC+13 | DST in effect | 4 April 2027: clocks go back 1 hour |
| Johannesburg | SAST | UTC+2 | No DST | None in the next 12 months |