Nth Term Calculator

Calculate the nth term of various mathematical sequences accurately.

Sequence Type

Value of n

First Term (a)

Difference / Ratio (d or r)

Coefficient a

Coefficient b

Coefficient c

Coefficient a

Coefficient b

Coefficient c

Coefficient d

Formula (use n)

📘 User Guide (Click to Open)

What is Nth Term?

The nth term formula helps you find any term of a sequence without listing all previous terms.

Supported Sequences

AP: a + (n − 1)d
GP: a × rⁿ⁻¹
HP: Reciprocal of AP
Fibonacci: 0, 1, 1, 2, 3…
Quadratic: an² + bn + c
Cubic: an³ + bn² + cn + d
Custom: Any valid formula using n

How to Use

Select sequence type
Enter required values
Enter n
Click calculate