Calculators

Simple Interest Calculator

Quick interest estimate without compounding. Choose years, months, or days (360/365). Built by Tolyo.

CalculatorsUpdated

Inputs

Currency symbol

E.g. $, €, ₨

Principal

Annual interest rate (%)

Time value

Unit

Show breakdown

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t (years): 2.000000

Results

Interest (I)

$1,500.00

Total (A = P + I)

$11,500.00

Principal (P)

$10,000.00

Rate (annual)

7.5000%

Breakdown

Time input

2 years

Time in years (t)

2.000000

Formula

I = P × r × t • A = P + I

Tips

Formula: I = P × r × t, where t is time in years and r is annual rate (decimal).
Pick Days for exact spans—choose 360 (“ordinary”) or 365 (“actual”) day-count.
Use the currency symbol field (e.g., $, €, ₨) for formatted results.