
InvestMath: Compound Interest
CAGR & Coast FIRE Calculator
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About
InvestMath brings seven investing calculators together in one clean, fast app. Enter a few numbers and get a clear answer in US dollars, British pounds or euros.
QUICK CALCULATORS
• Investment Growth: project a starting balance plus regular contributions
• Annualized Return (CAGR): turn a total return over time into a yearly rate
• Future Return: see the cumulative return a yearly rate produces
• Time to Return: find how many years a target return takes
• Goal Contribution: work out what to invest to reach a portfolio goal
PLANNING TOOLS
• Coast FIRE: find the portfolio value at which you can stop contributing and let compound growth carry you to retirement, and save scenarios to revisit
• Investment Goal: check whether your savings plan reaches your target
SIMPLE BY DESIGN
• No account or sign-up
• The amounts you enter stay on your device
• Light and dark mode
Remove ads anytime with a one-time purchase.
InvestMath provides estimates for educational purposes only. It is not financial advice.
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What's New in InvestMath
1.2.0
October 1, 2026
1
Subscriptions & In-App Purchases
$4.99
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