Time Tools — Zone Converter, Date Calculator, Countdown & More

Time is deceptively tricky to work with. How many days until your vacation? What time is it in Tokyo when it's 3 PM in New York? How many hours between two timestamps? These four tools handle the math so you don't have to.

Time Zone Converter

You're scheduling a call with someone in Singapore and you're in Berlin. You think Singapore is six hours ahead, but is it seven? Does daylight saving affect it? The time zone converter gives you the answer instantly. Pick two zones, enter the time, and see the result. It handles daylight saving transitions automatically, so you won't accidentally show up an hour late because the clocks changed last weekend.

It's also great for travelers. You're flying from London to Los Angeles and need to figure out what time you'll land in local time. Or you're watching a live event that starts at "8 PM ET" and you need to know when to tune in from wherever you are. The tool supports all major time zones including the weird half-hour offsets like India (UTC+5:30) and Nepal (UTC+5:45).

Date Calculator

How many days between two dates? The date calculator answers that. Pick a start date and end date, and it gives you the difference in days, weeks, and months. It also works the other way — "What date is 90 days from today?"

This comes up more often than you'd think. You signed a contract with a 60-day notice period and need to know your deadline. Your passport expires in a certain number of days and you want to know if it's enough for your trip. Your baby is due in 37 weeks and you want to see the actual date. Straightforward problems that are annoying to solve with mental math.

Countdown Timer

You've got a product launch at a specific date and time. A New Year's Eve party. A deadline. The countdown timer shows you exactly how much time is left — days, hours, minutes, and seconds ticking down in real time.

Set your target date and time and watch it count down. It's satisfying to see the number shrink, and it's useful for keeping yourself on track. Share the URL with your team so everyone sees the same countdown regardless of their time zone.

Time Calculator

You need to add 3 hours and 45 minutes to 10:20 AM. Or subtract 2 hours and 15 minutes from midnight. Or figure out the total duration of a list of time intervals. The time calculator handles time arithmetic that's surprisingly easy to mess up when you're crossing hour boundaries.

It's useful for tracking work hours, calculating cooking times, or figuring out how long a series of meetings will take back-to-back. Time math where 60 minutes becomes 1 hour (not 100 minutes) trips people up constantly — this tool eliminates the confusion.

All four tools run entirely in your browser. No server calls, no login, no tracking.