A time zone converter lets you instantly translate a time in one location to the equivalent time in another. Whether you are scheduling international meetings, coordinating with remote teams, or planning travel across time zones, this free tool handles DST transitions automatically and shows overlapping business hours at a glance.
Source Time
Converted Times
Quick Presets
Meeting Planner
Find overlapping business hours (9 AM - 5 PM) across all your selected timezones.
Add at least two timezones above to see the meeting planner.
How to Use the Time Zone Converter
Coordinating across time zones can be confusing, especially when Daylight Saving Time shifts are involved. This free time zone converter takes the guesswork out of scheduling by letting you convert any time to multiple target zones simultaneously and find overlapping working hours for global teams.
Step 1: Set Your Source Time
Start by selecting your source timezone from the dropdown. The tool automatically detects your local timezone and pre-fills it for you. Then set the date and time you want to convert. Click "Use current time" to quickly reset to right now. The UTC offset and DST status are displayed next to the source time so you always know which offset is being used.
Step 2: Add Target Timezones
Click the "Add Timezone" button or use the quick presets to add destination zones. You can add up to five target timezones at once. Popular presets include US Eastern, US Pacific, UK, Central Europe, India, Japan, and Australia. Each target zone shows the converted time, the current local time, the UTC offset, and whether Daylight Saving Time is active.
Step 3: Use the Meeting Planner
When you have two or more timezones selected, the Meeting Planner section activates. It displays a 24-hour grid for each timezone and highlights the hours where standard business hours (9 AM to 5 PM) overlap in all selected zones. Green cells indicate times suitable for scheduling a meeting that works for everyone. The summary below the grid tells you how many overlapping hours are available.
Understanding DST and UTC Offsets
Each timezone card displays the current UTC offset, such as UTC-5 for US Eastern Standard Time. When a region observes Daylight Saving Time, the offset changes (for example, US Eastern becomes UTC-4 during summer). The tool handles these transitions automatically based on the date you select and shows an amber "DST" badge when daylight saving is active in a particular zone.
Tips for Global Scheduling
When scheduling meetings across many time zones, try to find a window during the late morning of the westernmost participant and the early evening of the easternmost participant. The Meeting Planner makes this visual and fast. You can also bookmark specific configurations by noting the timezones you compare most frequently and using the preset buttons for quick access.
FAQ
Is this time zone converter completely free?
Yes, the Time Zone Converter is 100% free with no usage limits. You can convert times, compare multiple zones, and plan meetings as many times as you want. No signup required and no premium features locked behind a paywall.
Is my data private when using this tool?
Yes, all conversions run entirely in your browser using JavaScript. No data is sent to any server, stored in any database, or shared with third parties. Your timezone and time information stays completely private on your device.
How does the tool handle Daylight Saving Time (DST)?
The converter uses the Intl.DateTimeFormat API built into your browser, which automatically accounts for Daylight Saving Time transitions. It shows the correct UTC offset for each timezone based on the specific date you select, and indicates whether DST is currently active.
What is UTC and how do timezone offsets work?
UTC (Coordinated Universal Time) is the global time standard from which all time zones are calculated. Each timezone is expressed as an offset from UTC, such as UTC-5 for US Eastern Standard Time or UTC+9 for Japan Standard Time. The offset tells you how many hours ahead or behind UTC a location is.
How do I find overlapping business hours across time zones?
Use the Meeting Planner section at the bottom of the tool. Select two or more timezones, and the tool will highlight the hours where standard business hours (9 AM to 5 PM) overlap in all selected zones. Green cells indicate times that work for everyone.
Can I compare more than two time zones at once?
Yes, you can add up to five target timezones and compare them all simultaneously. Each zone shows the converted time, UTC offset, and DST status. The Meeting Planner also works with all selected zones to find common business hours.
Does the converter detect my local timezone automatically?
Yes, the tool automatically detects your browser's local timezone and sets it as the default source timezone. You can change it to any other timezone using the dropdown selector. This makes quick conversions from your current location effortless.