Compound Interest Calculator for Investors
November 23, 2025
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Investment Growth Calculator
Welcome! This tool is designed to help you visualize how your money can grow over time through consistent investment and the power of compound interest.
Enter Your Details
Your Projected Growth
Future Value
£0.00Total Principal
£0.00Total Interest
£0.00Key Terms Explained
- Principal
- This is the initial amount of money you start with, plus all the regular contributions you make over time. It’s the total amount of *your* money you’ve put in.
- Compound Interest
- This is the “interest on your interest.” Your investment earns interest, and then that new, larger amount earns interest, and so on. It’s what causes your wealth to grow exponentially over time.
- Rate of Return
- The estimated percentage your investment will grow each year. This is an estimate; actual returns can be higher or lower and are not guaranteed.
- Frequency
- How often your interest is calculated (compounded) and how often you add new money (invest). More frequent compounding can lead to slightly faster growth.
Important Considerations
The Power of Consistency
Small, regular investments can grow into a large amount over time. The most important step is to start and stay consistent.
The Impact of Inflation
Inflation is the rate at which prices rise. Your ‘real’ return is your investment return *minus* inflation. Aim for returns that beat inflation.
Risk vs. Return
Higher potential returns usually come with higher risk. Safer investments often have lower returns. Diversification helps manage this.
This calculator is for illustrative purposes only and does not constitute financial advice. All investment involves risk.
