Calculate compound interest
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Computed in your browser from the same formulas the full app uses — it is not saved and does not factor in every detail (taxes, exact compounding dates, fees) the way a saved scenario does. Sign in to save, share, or view history →
Compound interest uses A = P × (1 + r/n)^(n×t), where P is principal, r is annual rate, n is compounding frequency per year, and t is time in years.
Simple interest is calculated only on the principal. Compound interest is calculated on the principal plus previously earned interest, so it grows faster over time.
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