Generates the Fibonacci sequence up to a specified number of terms or up to a maximum value. Also checks whether a given number is a Fibonacci number and finds its position in the sequence. Shows the golden ratio approximation as the sequence grows. Supports arbitrary precision for very large Fibonacci numbers using BigInt.
Enter a term count or maximum value to generate the Fibonacci sequence, or check if a number is Fibonacci. For prime number checks, use the Prime Number Checker.
First 10 terms
Input
10 terms
Output
0, 1, 1, 2, 3, 5, 8, 13, 21, 34
Check if a number is prime and generate prime numbers in a range.
Calculate the Greatest Common Divisor and Least Common Multiple.
Calculate mean, median, mode, standard deviation, and more from a dataset.
Format numbers with locale-specific separators, currency, and scientific notation.
Convert between length, weight, temperature, volume, area, and more.
Calculate percentages, percentage change, and percentage of a total.