Fibonacci Calculator

Get the nth Fibonacci number and the full sequence up to term n.

n (0 to 1000)

F(10)

55

Sequence (F0 to Fn)

Output

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55

Enter n to compute the nth Fibonacci number exactly with BigInt, along with the whole sequence from term 0 to n.

How to use

Enter a whole number n between 0 and 1000.
Read the exact nth Fibonacci number.
Copy the nth term or the full sequence.

Frequently asked questions

How is the sequence defined?: It starts with F(0) equal to 0 and F(1) equal to 1, and each later term is the sum of the two before it.
Why can it show huge terms exactly?: It uses BigInt, so large Fibonacci numbers are computed and displayed as exact integer strings without rounding.

Related tools