🥧 Digits of Pi
By ToolNimba Editorial Team · Updated 2026-06-19
Source precision: pi is stored to 1000 decimal places. Requests above that are capped at 1000.
This tool shows the digits of pi to as many decimal places as you choose, up to 1000. Type the number of places you want and read off pi to that precision, then copy the full string with one click. The digits come from a fixed, verified reference value of pi, so what you see is exact up to the stored precision (1000 decimal places), not an approximation rounded on the fly.
What is the Digits of Pi?
Pi (the Greek letter pi) is the ratio of a circle's circumference to its diameter. That ratio is the same for every circle, which is what makes pi a universal constant: divide any circle's distance around by its distance across and you get pi, roughly 3.14159. It turns up far beyond circles, in trigonometry, probability, signal processing and physics, which is why its digits are so often quoted and memorized.
Pi is an irrational number, meaning it cannot be written as one whole number divided by another. As a consequence its decimal expansion never ends and never settles into a repeating block. Fractions like 22/7 or 355/113 are handy approximations, but they are only approximations: 22/7 is correct to two decimal places, and 355/113 is correct to six. To get more accuracy you simply need more digits, which is exactly what this tool gives you.
This tool does not compute pi when you press a button. Computing pi to high precision needs special arbitrary-precision arithmetic, and ordinary JavaScript numbers only carry about 15 to 17 significant digits, so a naive calculation would go wrong long before 1000 places. Instead the page stores a known-correct value of pi to 1000 decimal places and simply slices off the first N digits you ask for. That keeps every digit shown exact up to the source precision, with no rounding error creeping in.
When to use it
- Grabbing pi to a specific precision (say 15 or 50 places) to paste into a spreadsheet, script or document.
- Checking a memorized stretch of pi digit by digit against a verified reference list.
- Teaching or learning that pi is irrational by seeing its non-repeating expansion run on for hundreds of places.
- Comparing common fraction approximations like 22/7 and 355/113 against the true digits of pi.
How to use the Digits of Pi
- Enter how many decimal places of pi you want, from 0 up to 1000.
- Read the value of pi to that precision in the result box (it updates as you type).
- Use the sample buttons (10, 50, 100, 500, 1000) for quick common lengths.
- Click Copy to put the full string on your clipboard.
Formula & method
Worked examples
You want pi to 5 decimal places for a quick calculation.
- Enter 5 in the decimal places box.
- The tool takes the first 5 stored decimal digits: 1, 4, 1, 5, 9.
- It writes them after the point: 3.14159.
Result: Pi to 5 decimal places = 3.14159
You need pi to 15 decimal places, the precision used by typical double-precision numbers.
- Enter 15 in the decimal places box.
- The tool slices the first 15 stored digits: 141592653589793.
- It joins them onto 3. to form the value.
Result: Pi to 15 decimal places = 3.141592653589793
You ask for 0 decimal places.
- Enter 0 in the box.
- With no decimal digits requested, the tool returns just the whole-number part.
- No rounding of the next digit is applied, the point is simply dropped.
Result: Pi to 0 decimal places = 3
Pi at common precisions
| Decimal places | Value of pi |
|---|---|
| 2 | 3.14 |
| 5 | 3.14159 |
| 10 | 3.1415926535 |
| 15 | 3.141592653589793 |
| 20 | 3.14159265358979323846 |
Common fraction approximations of pi and their accuracy
| Approximation | Decimal value | Correct to |
|---|---|---|
| 22/7 | 3.142857... | 2 decimal places |
| 333/106 | 3.141509... | 4 decimal places |
| 355/113 | 3.141592920... | 6 decimal places |
| Stored value | 3.14159265358979... (1000 places) | 1000 decimal places |
Common mistakes to avoid
- Expecting the digits to start repeating. Pi is irrational, so its decimal expansion never repeats and never terminates. A run of the same digit (like the famous six 9s near place 762, the Feynman point) is just coincidence, not a pattern.
- Trusting more than about 15 digits from a normal calculator. Standard floating-point numbers only hold roughly 15 to 17 significant digits. Pasting a longer "pi" from a basic calculator can give wrong digits after that point. This tool reads from a stored 1000-place reference, so its digits stay exact.
- Treating 22/7 as exactly pi. 22/7 equals 3.142857..., which only matches pi to two decimal places. It is a convenient approximation, not the true value, and using it where precision matters introduces real error.
- Counting the leading 3 as a decimal place. The 3 before the point is the whole-number part. "Pi to 10 decimal places" means the 10 digits after the point (3.1415926535), so do not include the leading 3 in your count.
Glossary
- Pi
- The constant ratio of a circle’s circumference to its diameter, approximately 3.14159, the same for every circle.
- Irrational number
- A number that cannot be written as a ratio of two whole numbers; its decimal expansion never ends and never repeats.
- Decimal place
- A digit position after the decimal point. Pi to 3 places is 3.142 (3 digits after the point).
- Significant digits
- The meaningful digits in a number. Ordinary computer numbers carry about 15 to 17 of them, limiting on-the-fly precision.
- Approximation
- A value close to but not equal to the true number, such as 22/7 standing in for pi.
Frequently asked questions
What are the first digits of pi?
Pi begins 3.14159265358979323846. The first ten decimal places are 1415926535, so pi to 10 places is 3.1415926535. This tool can show the value to any length up to 1000 decimal places.
How many digits of pi does this tool show?
It stores a verified value of pi to 1000 decimal places and shows the first N you request. If you ask for more than 1000, it caps the result at 1000 and tells you that the stored precision is the limit.
Are these digits exact or rounded?
They are exact up to the source precision. The page does not calculate pi on the fly; it slices digits from a fixed 1000-place reference value, so no rounding error is introduced. Only when you reach the 1000-digit limit does the stored precision run out.
Why not just compute pi in the browser?
Ordinary JavaScript numbers carry only about 15 to 17 significant digits, so a direct calculation would be wrong well before 1000 places. Storing a known-correct value and slicing it guarantees accurate digits without arbitrary-precision math.
Is pi exactly 22/7?
No. 22/7 equals 3.142857..., which matches pi only to two decimal places. It is a useful approximation. The fraction 355/113 is closer, correct to six places, but pi itself is irrational and cannot equal any such fraction.
What is the Feynman point?
It is the run of six 9s that begins at the 762nd decimal place of pi (...999999...). It is purely coincidental, since pi is irrational and has no repeating pattern, but it is a memorable landmark you can spot when you list 1000 digits here.