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Calculators
Geometric Progression
Calculate the general term and sum of a Geometric Progression. Enter the first term, ratio and number of terms.
Last term (aₙ)
Sum of GP (Sₙ)
Sequence terms:
What is a Geometric Progression?
A GP is a sequence where each term is obtained by multiplying the previous one by the ratio q.
- General term: aₙ = a₁ × q^(n−1)
- Sum (q ≠ 1): Sₙ = a₁ × (q^n − 1) ÷ (q − 1)
- Sum (q = 1): Sₙ = n × a₁
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