Pi Digits Reference
Get the value of pi (π) rounded to any number of decimal places.
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Result
π
0
Formula used
π (pi) is the ratio of a circle's circumference to its diameter, approximately 3.14159265358979.
Example: π to 5 decimal places = 3.14159.
How to use this calculator
- Enter Decimal places.
- Press Calculate to see your result instantly.
FAQ
Frequently asked questions
Why is 15 the maximum number of decimal places?
Standard double-precision numbers (used by JavaScript) only reliably store about 15-17 significant digits.
What is pi used for?
Calculating circle area, circumference, and many trigonometric and wave-related formulas.
Is pi a repeating decimal?
No — pi is irrational, meaning its digits go on forever without repeating.
Where does the value of pi come from?
It's read from JavaScript's built-in Math.PI constant.