12 hours and 21 minutes timer
Set a timer for 12 hours and 21 minutes. Rings when it's done.
12:21:00
A countdown timer for 12 hours and 21 minutes. Press the "Start" button to start the timer. The timer will alert you when it expires. You can reset the timer at any time using the "Reset" button. You can also pause the timer at any time using the "Pause" button.
Custom timer
Hours
Minutes
Seconds
Things you can do in 12 hours and 21 minutes
- Have 92 showers
- Wash your teeth 370 times
- Watch 32 episodes of Friends
- Read 370 pages of a book
- Walk 37 miles
- Listen to Bohemian Rhapsody 123 times
- Watch Titanic 3 times
- Change 370 light bulbs
- Water 741 plants
- Read 2,223 emails
- Watch 2,964 TikToks
- Plant 24 trees
- Plant 24 trees
- Read 49 book summaries on Blinkist
- Blink 88,920 times
- Click this 277,875 times
In 12 hours and 21 minutes...
- Your heart beats 44,460 times
- Light travels 8,269,566,284 miles
- Earth travels 844,740 miles around the Sun
- Your body produces 12 oz of saliva
- The International Space Station travels 211,616 miles
- Elon Musk earns $222,300,000
- 2,800,982,800 Google searches get made
- The U.S. national debt increases by $2,022,307
Popular timers
1 minute timer
2 minute timer
3 minute timer
4 minute timer
5 minute timer
6 minute timer
7 minute timer
8 minute timer
9 minute timer
10 minute timer
15 minute timer
20 minute timer
25 minute timer
30 minute timer
35 minute timer
40 minute timer
45 minute timer
45 minute timer
50 minute timer
55 minute timer
60 minute timer
Other timers
9 minutes and 7 seconds11 minutes and 14 seconds11 minutes and 23 seconds11 minutes and 25 seconds17 minutes and 58 seconds19 minutes and 1 seconds20 minutes and 18 seconds23 minutes and 26 seconds31 minutes and 3 seconds36 minutes and 31 seconds38 seconds38 minutes and 33 seconds40 minutes and 50 seconds41 minutes and 24 seconds43 minutes and 24 seconds45 minutes and 53 seconds49 minutes and 41 seconds50 minutes and 39 seconds53 minutes and 39 seconds54 minutes and 1 seconds58 minutes and 10 seconds1 hours3 hours and 23 minutes6 hours and 17 minutes7 hours and 27 minutes10 hours and 1 minutes13 hours and 19 minutes13 hours and 24 minutes14 hours and 45 minutes16 hours and 51 minutes
Frequently asked questions
Why do I need a timer?
If you're here, you probably already need it for something. In any case, timers are useful any time you need to perform a certain action for a specific amount of time. The timer alerts you when that time period is over.
How do I know when the timer is up?
When the timer is up, we'll play a 2 second alert and the timer will blink red. We'll also update the timer in the page title, so you will instantly see it even if you have multiple browser tabs open.
Can I use it on my phone?
Yes, it works on any device with a browser.
How can I support you?
Bookmark timer.guru and share it on social media.