Calculator
Select a country/region and (if needed) a city. Results include Daylight Saving Time (DST) for the chosen date.
Origin
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Destination
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Time difference
Select origin and destination to calculate the exact time difference.
Share & embed
Share this exact setup with a link, or embed the tool as an iFrame.
Visual time zone converter (2 locations)
Planning a trip, a remote meeting, a customer support window, or a call across the world? Compare two locations in seconds: you’ll get the exact time difference (including DST rules), a clear 24-hour timeline, and a best time to call suggestion based on working hours.
Tip: if a country has multiple time zones, pick a specific city for the most accurate result.
How to use this time difference calculator
The most common question is: “If it’s X here, what time is it there?” Pick two locations plus a date/time for the origin and you’ll instantly get:
- Exact time difference (based on official time zone rules)
- Local times in parallel, including “yesterday/tomorrow” shifts
- Working-hours overlap as a “best time to call” suggestion
- A visual 24-hour timeline to decide in seconds
Why time differences change (Daylight Saving Time)
Time differences aren’t always constant. The main reason is Daylight Saving Time (DST): different countries switch on different dates (and many never switch at all). That’s why pairs like UK ↔ US or Europe ↔ Australia can shift by an hour during certain weeks.
This calculator applies official DST rules for the date you select and shows whether DST is active in each location.
UTC offset and the “wrong day” problem
Time zones are often described by their UTC offset (e.g., UTC+1). When the difference is large, conversions can land on the previous or next day. The timeline marks this with +1d or −1d so you don’t schedule on the wrong date.
Travel, connections, and booking tips
A time zone converter is especially useful when you’re buying tickets, confirming check-in times, or coordinating transfers. Common scenarios:
1) Arrivals, check-ins, and connections
Convert arrival times to local time and save the link. This helps avoid confusion with long layovers and late-night arrivals.
2) Cancellation deadlines and support windows
Some platforms display times in your browser’s time zone, while emails and policies follow the provider’s time zone. Converting both views helps you avoid missed deadlines.
3) Jet lag (planning smarter)
Use the timeline to visualize when it’s “sleep time” at your destination and what that means where you are right now.
Planning international meetings (remote teams & business)
Working-hours overlap helps you choose meeting times that respect both sides—useful for distributed teams, global clients, and support coverage.
Best time to call (overlap)
The default is 09:00–17:00. Adjust it for shift work, flexible schedules, or support teams. You’ll instantly see the best windows for both locations.
Embed this tool on your website
You can copy the embed code (iFrame) directly from the calculator. If you need a white-label version, defaults, or branding, use the contact page.
Related tools on Fieba
For a complete planning toolkit, these pages pair well with a time zone converter:
- Currency converter — estimate costs in your currency
- Exchange rates — check rates before paying
- World clock — multiple cities at once
- All tools — the full toolkit
Frequently asked questions
Does the calculator include Daylight Saving Time (DST)?
Yes. Results are calculated for the selected date using official time zone rules, including DST when it applies.
Why does the destination sometimes show “tomorrow” or “yesterday”?
When the UTC difference is large, conversions can land on the previous or next day. The timeline flags this to help prevent date mistakes.
What does “best time to call” mean?
It’s the overlap between both locations’ working hours (default 09:00–17:00). Adjust the range for shifts or flexible schedules.
Can I share this comparison with a link?
Yes. Copying the link saves your exact setup so anyone opening it sees the same comparison.
Can I embed the calculator on my website?
Yes. Copy the embed code (iFrame). For white-label/branding and default presets, use the contact page.
How accurate is the calculation?
It’s accurate for planning and scheduling because it uses standard time zone rules and DST for the chosen date. Rules can change, so for critical use cases, double-check with official sources.
Does it work on mobile?
Yes. The layout is responsive and the hour tiles are optimized for tapping.