Compound Interest Calculator

Take control of your financial future with Compound Interest Planner, an advanced investment calculator designed to help you simulate, compare, and plan your savings with confidence.

Whether you're investing for retirement, building wealth, saving for a major purchase, or simply exploring different financial scenarios, the app makes it easy to understand how your money can grow over time.

Create accurate simulations using both compound and simple interest, visualize long-term growth, compare strategies, and make better financial decisions.

COMPOUND & SIMPLE INTEREST

• Calculate compound or simple interest
• Monthly or yearly interest rates
• Flexible investment periods in months or years
• Initial investment and recurring contributions
• Future value calculations
• Total invested amount
• Total interest earned
• Investment return overview

PLAN YOUR FINANCIAL GOALS

Use the app to plan:

• Retirement savings
• Long-term investments
• Emergency funds
• College savings
• Wealth building
• Monthly investment strategies
• Financial goals

POWERFUL VISUALIZATION

Understand your investment growth with interactive charts and detailed projections.

• Investment growth charts
• Principal vs. interest visualization
• Month-by-month schedule
• Detailed investment breakdown

COMPARE DIFFERENT SCENARIOS (PRO)

Find the best strategy by comparing two simulations side by side.

• Compare different interest rates
• Compare contribution amounts
• Compare investment periods
• Evaluate multiple scenarios before investing

ADJUST FOR INFLATION (PRO)

See the purchasing power of your future investment using inflation-adjusted calculations.

PROGRESSIVE CONTRIBUTIONS (PRO)

Simulate increasing your monthly contributions over time to better reflect real investment strategies.

SAVE YOUR SIMULATIONS

Keep your calculations available whenever you need them.

Free
• Recent simulation history
• Local storage

PRO
• Unlimited history
• Organize simulations
• Access previous calculations anytime

PERSONALIZE YOUR EXPERIENCE

• Light theme
• Dark theme
• System theme
• Multiple currencies
• Multiple languages
• Default rate settings
• Custom calculation preferences

WORKS EVERYWHERE

• No account required
• No login
• Works completely offline
• Fast and lightweight
• Share your simulation results

PRO FEATURES

• Unlimited history
• Compare simulations
• Inflation adjustment
• Progressive contributions
• Advanced charts
• Ad-free experience
• One-time lifetime purchase
• No subscription required

Ideal for beginner investors, experienced investors, students, and anyone who wants to understand compound interest, estimate future investment value, grow wealth, and make smarter financial decisions.

Disclaimer: This application is intended for educational and informational purposes only. Calculations are estimates and should not be considered financial advice. Always consult a qualified financial professional before making investment decisions.

Recent changes:
• Brand-new app redesign
• New dark theme
• Compare simulations
• Notes for saved simulations
• More currencies supported
• New languages added
• Bug fixes and performance improvements