Free Geometric Sequence & Series Calculator (Finite & Infinite Sum) Online
Calculate the Nth term a_n = a₁ × r^(n-1), common ratio r, finite series sum, and infinite converging geometric sum S_∞. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Enter First Term (a₁)
Input sequence start value.
Enter Common Ratio (r)
Input multiplier ratio between terms.
Inspect Convergence
If |r| < 1, evaluates infinite converging sum S_∞ = a₁ / (1 - r).
Frequently Asked Questions
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