Financial Tools
Free calculators to help you make better financial decisions
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Real Estate Development ROI Calculator
Calculate your return on investment for building and selling or renting residential units
📋 What This Tool Does
Purpose: Helps real estate developers and investors calculate the potential return on investment (ROI) when building residential units. You can compare two scenarios: selling the units immediately after completion or renting them out over time.
Use Case: You own land and want to build apartments or villas. Should you sell them immediately or rent them out? This calculator shows you the numbers for both strategies, helping you make an informed decision based on your cash flow needs and investment timeline.
What you paid for the land
Total cost to build (materials + labor)
Apartments or villas being built
If selling immediately
If renting out
💰 Your Results
Enter your numbers and click Calculate
💡 How to Use These Results
Selling Strategy: Good if you need cash quickly or want to reinvest in another project. Lower ROI but immediate liquidity.
Renting Strategy: Good for long-term passive income. Higher ROI over time but requires property management and maintenance.
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Compound Interest Calculator
See how your investments grow over time with compound interest
📋 What This Tool Does
Purpose: Shows you how much your money will grow when interest compounds over time. Compound interest means you earn interest not just on your initial investment, but also on the interest you’ve already earned.
Use Case: Planning your savings or investments? This calculator shows you exactly how much you’ll have in the future if you invest a lump sum now and let it grow. Essential for retirement planning, education savings, or any long-term financial goal.
How much you’re investing now
Expected yearly return
How long will it grow?
How often interest is calculated
📊 Your Investment Growth
Enter your numbers and click Calculate
💡 The Power of Compound Interest
Albert Einstein allegedly called compound interest “the eighth wonder of the world.” The key insight: Start early! An investment made 10 years earlier can be worth significantly more than one made later, even with lower contributions, because it has more time to compound.
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Rule of 72 Calculator
Quickly estimate how long it takes for your money to double
📋 What This Tool Does
Purpose: The Rule of 72 is a simple mental math trick to estimate how many years it will take for your investment to double in value. Just divide 72 by your expected annual return rate. For example, at 8% annual return, your money doubles in approximately 9 years (72 ÷ 8 = 9).
Use Case: Quick back-of-the-envelope calculations when evaluating investment opportunities. Want to know if that 6% bond or 10% stock investment will double your money faster? This tool gives you an instant answer without complex formulas.
Expected yearly return on investment
Just for illustration purposes
🎯 Quick Reference
4% return:
18 years to double
6% return:
12 years to double
8% return:
9 years to double
12% return:
6 years to double
⏰ Doubling Timeline
Enter your return rate and click Calculate