π How long would it take to type every known digit of pi?
How long would it take to type every known digit of pi?
About 380 years of non-stop typing
380 years
📐 The Calculation
As of 2024, pi has been calculated to 105 trillion digits. At a fast typing speed of 80 words per minute (roughly 5 keystrokes per word = 400 keystrokes/minute): 105,000,000,000,000 / 400 / 60 / 24 / 365 = approximately 500,000 years. Even at 1 digit per second: 3.3 million years.
Assumptions:
- • 105 trillion known digits of pi
- • Typing speed: 400 keystrokes per minute
- • No errors, no breaks
- • Each digit = 1 keystroke
🤯 For Perspective...
Longer than modern humans have existed
The universe is only 13.8 billion years old
You could write the complete works of Shakespeare 5 billion times instead
💡 Fun Facts
You only need 39 digits of pi to calculate the circumference of the observable universe to within the width of a hydrogen atom
The current record holder (Emma Haruka Iwao, Google) calculated 100 trillion digits in 2022
Reciting pi from memory, the world record is 70,030 digits (Suresh Kumar Sharma, 2015) — that took 17 hours
⚙️ What If Calculator
What if you could go faster?
At 2× speed
190 years
At 10× speed
38 years
At 1000× speed
139 days
More Absurd Calculations
How long would it take to walk to the Moon?
About 9 years of non-stop walking
How long would it take to count to one million out loud?
About 11.5 days of non-stop counting
How long would it take to count to one billion out loud?
About 31 years of non-stop counting
How long would it take to fill an Olympic swimming pool with tears?
About 7.6 million years of continuous crying
How long would it take to read every book ever published?
About 480,000 years at average reading speed
How long would it take to drive to the Sun?
About 177 years at highway speed