About

About 4InvestSimulator

A free, no-nonsense investment calculator that shows how your money grows over time — clearly and instantly.

4InvestSimulator was built on a simple idea: growing your money is one of the most powerful things you can do, and you deserve a clear picture of how it adds up over time. Our calculator shows how an investment grows with simple or compound interest and monthly contributions — separating what you put in from what you earn.

What our calculator does

Clear breakdown. See your final balance split into total invested and interest earned, so you know exactly where your growth comes from.

Simple or compound. Switch between simple and compound interest, and add a monthly contribution to see the difference compounding makes.

Instant results. The numbers update as you type — no waiting, no page reloads.

Private by design. Everything runs in your browser. Nothing you enter is sent to a server.

Part of the 4Utilities family

4InvestSimulator is one of a growing family of free, focused online tools. We believe everyday software should be fast, accessible, and respect your privacy — and we build every tool with that in mind.

Have feedback or an idea? Visit our Contact page — we'd love to hear from you.

4InvestSimulator provides estimates for planning and educational purposes only and is not financial advice. Real returns vary and are not guaranteed.