Online Clock — Six Types of Clocks in One Place
Free online clock displaying the current time in six different formats simultaneously: digital, analog, Roman numeral, binary, sundial, and flip clock. Each type includes an educational guide explaining how to read it — perfect for children learning to tell time and adults exploring world time zones.
Explore digital, analog, Roman, binary, sundial, and flip clocks with timezone support
Features
How to Use
- View clocks. Open the page to see all six clock types showing your local time with seconds.
- Change timezone. Click the timezone button and search for any city or timezone to see that location's time.
- Switch format. Toggle between 12-hour (AM/PM) and 24-hour format using the buttons above the clocks.
- Learn. Scroll to the educational section and click any clock type tab to learn how to read it.
- Mini window. Click the PiP button to open a floating mini clock that stays on screen while you browse.
Frequently Asked Questions
Do the clocks keep running if I switch to another tab?
Yes. The clocks use your device's system time (Date.now()), so they are always accurate regardless of tab activity. When you return, you will see the correct current time instantly.
How does the timezone picker work?
Click the timezone button to open a searchable list of 50+ popular cities and all IANA timezones. Select any location to see its current time on all six clocks. Your selection is saved automatically.
Is this tool suitable for children?
Absolutely! The educational section has step-by-step guides for each clock type, written in simple language. Children can see the same time in different formats and learn how to read analog, Roman, and binary clocks.
What is a binary clock?
A binary clock shows each digit of the time using binary numbers (powers of 2). Each column has 4 dots representing 8, 4, 2, and 1. Lit dots are added together to form the digit. It's a fun way to learn the binary system used by computers.
What is the difference between AM and PM?
AM (ante meridiem) covers midnight to just before noon (12:00 AM to 11:59 AM). PM (post meridiem) covers noon to just before midnight (12:00 PM to 11:59 PM). The educational section has a full explanation with a conversion table.
How accurate are the clocks?
The clocks read your device's system clock, which is typically synchronized via NTP (Network Time Protocol). Accuracy depends on your device but is usually within 1 second of atomic time.
