# Time Zone Converter > Convert a chosen time across many cities at once with UTC offsets, day/night, and a meeting-overlap planner — or run it live. Daylight saving is handled automatically. Free, real-time. Set a base city and a specific date and time — or leave it running live — and see the equivalent moment in every city you add, each with its UTC offset, the hour difference from your base, and a day or night indicator. A meeting planner strip lays 24 hours side by side across all zones and colour-codes working hours, so you can eyeball the overlap where everyone is awake. All daylight-saving rules come from the IANA database via your browser, so the results stay correct across DST changes. - **Live tool:** https://www.toolnova.org/utilities/time-zone-converter - **Category:** Calculators & Converters (https://www.toolnova.org/utilities) - **Price:** Free - **Requirements:** Runs in a modern web browser · No signup · No install ## What this tool does - Convert one chosen time across unlimited cities at once - Live mode with second-by-second world clocks - UTC offset and hour-difference from your base city on every card - Meeting-overlap planner with colour-coded working hours - Day/night indicator per city - Automatic, DST-aware conversion via the IANA time-zone database - Add cities from a curated global list — no IANA codes to memorize ## How to use Time Zone Converter 1. **Choose your base city** — Pick the city you're planning from. It defaults to your device's local zone and is marked 'Base' in the grid. 2. **Set a time — or stay live** — Enter the date and time you want to convert, or hit 'Now' to track the current moment live. Times you enter are read as your base city's local wall clock. 3. **Add the other cities** — Use the 'Add city' picker to drop in every location you care about. Each card shows the converted time, offset, and whether it's day or night there. 4. **Find the overlap** — Scan the meeting planner strip for columns where the most cities are green (9–5). That's the window where a call suits everyone. ## Common use cases - Scheduling a call that works across several countries at once - Checking what time a launch, stream, or deadline lands in your day - Planning travel arrivals and beating jet lag - Coordinating a distributed remote team's working hours - Converting PST/EST/GMT/IST between each other during DST weeks - Comparing world clocks live on a single dashboard ## About ### Find the real overlap between time zones Pick a source and target zone and see the converted time immediately, with daylight-saving handled for you — the part manual math gets wrong twice a year. It's made for scheduling a call across continents, catching a live stream, or working out when a deadline actually lands in your own day. ### Plan meetings without the guesswork Because DST shifts are applied automatically, a 3 PM London slot resolves to the correct local time in New York, Dubai, or Sydney even during the weeks the offsets change. Convert once and share a time everyone reads correctly, instead of a UTC offset people have to decode. ## FAQ ### How do I convert time between time zones? Select your source time zone, enter the time, then select your target time zone. The tool instantly shows the equivalent time, including automatic daylight saving time adjustments. ### What is UTC and why is it used? UTC (Coordinated Universal Time) is the primary time standard used globally. It doesn't change for daylight saving. All time zones are expressed as UTC+ or UTC- offsets. New York is UTC-5 (EST) or UTC-4 (EDT). ### How do I find the best meeting time for a global team? Use the meeting planner: enter times during business hours in your time zone and see what time it is for team members in other zones. Aim for overlap in standard business hours (9am-5pm) for all participants. ### How does daylight saving time affect time zone conversions? Daylight Saving Time (DST) shifts the clock forward 1 hour in spring and back in fall. Not all countries observe DST, and they change on different dates. This tool automatically accounts for current DST status in each time zone. ### What time zones does the US have? The contiguous US has 4 time zones: Eastern (ET, UTC-5/4), Central (CT, UTC-6/5), Mountain (MT, UTC-7/6), and Pacific (PT, UTC-8/7). Hawaii is UTC-10, Alaska is UTC-9. Numbers in parentheses show Standard/Daylight Saving Time offsets. ### What is the difference between a time zone and a UTC offset? A UTC offset is a fixed number like +5:30 (India) or -8:00 (Pacific). A time zone is a named region (e.g., 'America/New_York') that may have multiple UTC offsets throughout the year due to daylight saving. Time zones are always preferred over raw offsets for scheduling because they handle DST automatically. ### Does it handle daylight saving time? Yes — DST transitions are applied automatically for each zone, so conversions stay accurate year-round. ### What is UTC? Coordinated Universal Time is the global reference from which all time zones are offset, used as a neutral baseline for scheduling. --- ToolNova — free, privacy-first browser tools. Most tools process data locally on your device. See https://www.toolnova.org/llms.txt for the full directory.