Máy tính múi giờ
Convert time between time zones, see time difference, and view current time in multiple zones with step-by-step solutions.
Your Input
Select a calculation type, enter time and timezones (or pick zones for difference/current), then click Calculate to see results with step-by-step solution.
Kết quả
Giải pháp từng bước
Hướng dẫn sử dụng hoàn chỉnh
Múi giờ là gì?
A time zone is a region that observes a uniform standard time for legal, commercial, and social purposes. This calculator converts time between zones, shows the difference between two zones, and displays current time in selected zones (UTC-based).
Time format: HH:MM or HH:MM:SS (24-hour). UTC = reference.
Các loại tính toán
Chuyển đổi múi giờ
Enter a time and convert from one timezone to another (e.g. 14:00 UTC to EST).
Chênh lệch múi giờ
Get the hour/minute/second difference between two timezones.
Thời gian hiện tại
Show current time (UTC-based) in selected timezones.
Cách sử dụng máy tính này
- Select calculation type: Convert Time Zone, Time Zone Difference, or Current Time.
- Enter time (HH:MM or HH:MM:SS) and select source/target timezones, or select timezones for difference/current.
- Click Calculate to see results, chart (when available), and step-by-step solution.
- Click Reset to clear inputs and results.
Múi giờ chung
UTC/GMT: Reference (0). EST/EDT, CST/CDT, MST/MDT, PST/PDT (US). CET/CEST, EET/EEST (Europe). JST, IST, AEST/AEDT, NZST/NZDT.
Ghi chú quan trọng
- Use 24-hour format. UTC is the standard reference. Offsets are hours ahead (+) or behind (-) UTC.
- Daylight Saving Time (DST) shifts some zones (e.g. EDT, CDT, PDT, CEST); dates vary by location and year.
- Conversion accounts for day overflow/underflow when crossing midnight.