Pevlika Browser Apps

Arithmetic Sequence Calculator

Find the nth term and the sum of an arithmetic sequence.

Runs in your browser — nothing is uploaded

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How to use Arithmetic Sequence Calculator

  1. Enter your values — the unit for each field is shown next to it.
  2. The result updates instantly as you type.
  3. Copy the results, or change inputs to compare scenarios.

Formula & assumptions

aₙ = a₁ + (n − 1)d

Sₙ = n(a₁ + aₙ) / 2

Example: a₁ = 3, d = 4 → a₁₀ = 39 and S₁₀ = 210.

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