Pi Calculator
Get the value of pi (π) to any number of decimal places, up to 15.
- Free to use
- Accurate results
- No registration required
- Works on all devices
Enter a number of decimal places to get pi (π) to that precision.
Your result
3.1415926536
π
AI explanation
Formula
Pi, π ≈ 3.14159265358979323846...Worked example
Pi to 10 decimal places
| Field | Value |
|---|---|
| Decimal places | 10 |
| π | 3.1415926536 |
Assumptions
- Capped at 15 decimal places, the practical limit of JavaScript's double-precision floating point — beyond that, there's no genuine additional precision to show. For thousands of digits of pi, a specialized arbitrary-precision tool is needed instead.
Frequently asked questions
What is pi?
The ratio of a circle's circumference to its diameter, approximately 3.14159 — a fundamental constant throughout geometry and trigonometry.
Why can't this show thousands of digits of pi?
JavaScript's standard number precision only supports about 15-17 significant digits — computing pi to thousands of digits needs specialized arbitrary-precision software.
I need Euler's number instead — is there a calculator for that?
Yes — see the Euler Number Calculator.