วิธีการคำนวณ Time Zone Converter

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A time zone converter calculates the local time in one location given another, using UTC offsets. UTC is the global reference; all time zones are offset from it.

สูตร

UTC±X | Offset from UTC (−12 to +14) | Daylight Saving Time adds 1 hour for several months

คำแนะนำทีละขั้นตอน

1UTC time = Source local − Source UTC offset
2Target local = UTC + Target UTC offset
3DST shifts clocks +1h in spring; −1h in autumn
4Offsets range from UTC−12 to UTC+14

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อินพุต

3:00 PM London (UTC+0) → Sydney (UTC+11)

ผลลัพธ์

3:00 PM + 11h = 2:00 AM next day Sydney time

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What is Time Zone?

A time zone converter calculates the local time in one location given another, using UTC offsets. UTC is the global reference; all time zones are offset from it

How accurate is the Time Zone calculator?

The calculator uses the standard published formula for time zone. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Time Zone calculator use?

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Time Zone calculator use?

The core formula is: UTC time = Source local − Source UTC offset. Each step in the calculation is shown so you can verify the result manually.

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