Question 1

What is the Fibonacci sequence?

Accepted Answer

Each number is the sum of the two before it: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34... Appears in nature and mathematics.

Question 2

How do I calculate Fibonacci numbers?

Accepted Answer

F(n) = F(n-1) + F(n-2). Start with F(0)=0, F(1)=1. F(10) = 55. Large values use Binet's formula.

Question 3

How accurate are these calculations?

Accepted Answer

Our calculator uses double-precision floating-point arithmetic, accurate to about 15-16 significant digits for most calculations.

Question 4

Can I use the result in further calculations?

Accepted Answer

Yes, results are calculated to full precision. You can copy the exact value or use the rounded display depending on your needs.

Fibonacci Calculator - Free Online Tool

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