Simple Interest Calculator

Interest = principal × (annual rate ÷ 100) × years. Not compound interest.

Principal Annual rate (%) Time (years)

Result
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How this calculation works

What each input means

Principal — Dollar base.
Rate % — Annual simple rate.
Time (years) — Whole years in the product (not converted to months).

Formula used

Interest ≈ principal × (rate ÷ 100) × time (simple interest; no compounding within the period).

How this result is estimated

This simple interest calculator applies the formulas described on this page to the values you enter. Outputs are not financial, tax, legal, or medical advice.

Inputs are user-provided and may include rounding.
Where accuracy, eligibility, or obligations matter, rely on official disclosures and licensed professionals.

Last reviewed: 2026-04-17

Frequently asked questions

Is this calculator result exact?

It is an estimate based on your inputs and may differ from official or provider-specific calculations.

Does this site provide financial, tax, or legal advice?

No. Each tool applies explicit formulas to values you supply. Financial, tax, and legal conclusions belong with licensed professionals and official documents.

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