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Fileraz
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Date & Time Calculator
Calendar arithmetic, reviewed October 2026 — weekends count unless a page says otherwise, and the sample holiday list is not an official gazette.
Your files never leave your device
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Work starts the moment you drop a file
No daily limit, no sign-up, no watermark
A timezone converter takes a date and time in one IANA time zone and shows the equivalent local time in another, using your browser's built-in Intl time-zone data — the same database your operating system relies on. Noon in Asia/Kolkata (IST, UTC+5:30) is 06:30 the same morning in UTC, which is exactly the kind of cross-region scheduling mix-up this prevents.
Type the moment, then the from and to zones as IANA names — Asia/Kolkata, America/New_York, Europe/London, UTC — not abbreviations like IST or EST, which collide across countries. Always state both zones when inviting: “4 pm IST / 10:30 am GMT” leaves no room for the classic off-by-one-hour daylight-saving error that abbreviations cause.
It does not send meeting invites, does not resolve ambiguous wall-clock times during a fall-back transition for you, and is not authoritative for historical offsets that changed by decree — verify legal time elsewhere.
Depends on browser timezone database — verify for legal time.
For current dates it applies the zone's DST rules through the Intl database. Very old dates or recent political offset changes may not be perfectly represented.
No. Conversion happens locally.
That is the promise behind every tool here. Files are read in your browser tab, processed there, and discarded when you close it — never uploaded to our servers.