Investment Growth Calculator
Investment Growth: Compound interest with monthly contributions.. Free, no account needed – works offline.
Investment Growth
Forecasting & Planning
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Click Calculate to see your result.
How the Investment Growth Works
Computes future value of a lump sum plus monthly deposits at a fixed annual rate, adjusted for inflation.
$5,000 initial, $200/month, 7% return, 20 years → nominal ~$120,000, inflation-adjusted ~$78,000.
Common Mistakes
- Ignoring inflation:
- Using unrealistic return rates:
Frequently Asked Questions
What is a realistic return?
Stock market long-term average is ~7% after inflation.