Explanation

What is Simple Interest?

Simple interest grows linearly on principal over time.

What this calculator does

Calculate interest with a flat rate over time.

Inputs you need

• Principal
• Annual rate (%)
• Time (years)

Formula

• Interest: P x r x t
• Total: P + interest

Example

P=10000, r=6%, t=3 years:

• Interest = 1800
• Total = 11800

Quick input set you can try:

• Principal: 10000
• Annual rate (%): 6
• Time (years): 3

FAQ

1) What does this calculator help with? It helps you calculate Simple Interest quickly and with consistent formulas.

2) Which formula is used? It uses the standard method shown in the formula section on this page.

3) Can I use decimal values? Yes. Decimal values are supported for most numeric fields.

4) Should I rely on this for final decisions? Use it as a practical estimate, and verify critical decisions with official documents or expert advice.