# whattimewillitbein.com

> Free timezone calculator and future time converter. Answers the question "What time will it be in [City B] when it's [time] in [City A]?" — DST-accurate, shareable links, 196+ cities, no sign-up required.

## Docs

- [How to use the calculator](/): Enter a source city, pick a time (now, in X hours, or a specific time), and get the converted time in any destination city. Every result has a permanent shareable URL.
- [FAQ](/faq): Answers to 15 common questions about time zones, UTC, Daylight Saving Time, and scheduling across countries.
- [About](/about): What the site is, who it's for, and how it handles DST.

## API / URL Patterns

- [City-pair pages — time difference between two cities](/time/new-york-to-london): URL pattern: /time/{city-a}-to-{city-b} — shows current offset, hourly conversion table, DST info, business overlap, and FAQ.
- [City hub pages — timezone info for one city](/time/tokyo): URL pattern: /time/{city} — shows current timezone abbreviation, UTC offset, DST status, and links to all city-pair conversions.
- [Live calculator — shareable conversion link](/at/15-00/tokyo?from=lisbon): URL pattern: /at/{HH-MM}/{destination}?from={source} — permanent URL encoding a specific time conversion.

## Popular City Pairs

- [New York to London time](/time/new-york-to-london): EST/EDT to GMT/BST — 5h difference (varies by DST season)
- [London to New York time](/time/london-to-new-york): GMT/BST to EST/EDT
- [New York to Paris time](/time/new-york-to-paris): EST to CET/CEST — 6h difference
- [Los Angeles to Tokyo time](/time/los-angeles-to-tokyo): PST/PDT to JST — 17h difference (fixed, Japan has no DST)
- [New York to Dubai time](/time/new-york-to-dubai): EST to GST — 9h difference
- [London to Dubai time](/time/london-to-dubai): GMT to GST — 4h difference
- [New York to Singapore time](/time/new-york-to-singapore): EST to SGT — 13h difference
- [Sydney to London time](/time/sydney-to-london): AEST to GMT — 11h difference (varies by DST)
- [Toronto to London time](/time/toronto-to-london): EST to GMT — 5h difference
- [London to Tokyo time](/time/london-to-tokyo): GMT to JST — 9h difference

## Sitemap

- [Full sitemap — 24,000+ URLs](https://whattimewillitbein.com/sitemap.xml): Covers homepage, 196 city hub pages, and all city-pair combination pages.