Simple Interest Calculator

Simple interest is charged only on the principal — no compounding. Useful for short-term loans and some bonds.

Your details

Principal$Annual rate%Years

Interest

$1,500.00

Total value: $11,500.00

Principal vs interest

Principal: $10,000.0087%
Interest: $1,500.0013%

Interest$1,500.00

Formula

Interest = principal × rate × time. Total = principal + interest.

Sources & methodology

•U.S. SEC — interest — SEC

Last updated: 2026-07-20

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