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
2 minutes and 47 seconds3 minutes and 17 seconds4 minutes and 24 seconds6 minutes and 10 seconds11 minutes and 3 seconds11 minutes and 57 seconds12 minutes and 57 seconds22 minutes and 24 seconds22 minutes and 32 seconds23 minutes and 1 seconds23 minutes and 45 seconds34 minutes and 7 seconds37 minutes and 43 seconds39 minutes and 16 seconds40 minutes and 30 seconds41 minutes and 35 seconds46 minutes and 30 seconds48 minutes and 32 seconds55 minutes and 18 seconds56 minutes56 minutes and 36 seconds57 minutes and 55 seconds59 minutes and 41 seconds60 minutes and 21 seconds3 hours and 6 minutes4 hours and 20 minutes6 hours and 1 minutes9 hours and 4 minutes10 hours and 15 minutes12 hours and 3 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.