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Fibonacci Calculator.

Calculate an exact Fibonacci term or generate a bounded sequence from F₀ = 0 and F₁ = 1.

Этот калькулятор пока переведён не полностью — часть текста отображается на английском.

Расчёт на устройствеБез регистрации
01

Введите значения

Результаты обновляются во время ввода.

Whole number from 0 to 10,000.

Terms from F₀, up to 100.

Fibonacci term: 55

Fibonacci term

55

Разбор

IndexF10
Exact typeBigInt

Sequence from F₀

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

Формула

Fₙ = Fₙ₋₁ + Fₙ₋₂ for n ≥ 2. Values are calculated exactly; no floating-point rounding is used.

Как пользоваться

The Fibonacci sequence starts F₀ = 0, F₁ = 1; each following term is the sum of the two before it.

Exact BigInt output is capped at n = 10 000; sequences are capped at 100 terms so the page stays responsive.

Вопросы и ответы

What are the first Fibonacci numbers?

Using the zero-based convention, F₀ = 0, F₁ = 1, and each next term is the sum of the two preceding terms.

Are the results rounded?

No. The calculator uses exact integer arithmetic and caps the input so the browser stays responsive.