Free Interest Calculator - Simple & Compound Interest, Loans, Savings | FreeWWW
๐Ÿ’ฐ

Interest Calculator

Calculate simple and compound interest, plan your savings, analyze loans, and reach your financial goals โ€” all 100% free!

๐Ÿ“Š How to Use This Calculator

Choose a calculator tab below based on your needs. Savings Calculator helps you grow your money with deposits. Loan Calculator shows payment schedules and total costs. Compare lets you evaluate two scenarios side-by-side. Goal Planner calculates how much to save monthly. Quick Tools provides handy shortcuts like Rule of 72 and APR/APY conversion.

๐Ÿ“ˆ
Savings & Investment Calculator
$
%
๐Ÿ’ต Regular Contributions (Optional) โ–ผ
$
๐Ÿ“‰ Inflation Adjustment (Optional) โ–ผ
%
๐Ÿ“Š
Results
Final Balance
$0.00
Total Principal
$0.00
Total Interest Earned
$0.00
APY (Effective Rate)
0.00%
Interest/Principal Ratio
0.00%
๐Ÿ“‹ Year-by-Year Breakdown โ–ผ
Year Starting Balance Contributions Interest Ending Balance
๐Ÿฆ
Loan Calculator
$
%
๐Ÿ’ฐ Extra Payments (Optional) โ–ผ
$
๐Ÿ“Š
Loan Summary
Monthly Payment
$0.00
Total Principal
$0.00
Total Interest
$0.00
Total Cost of Loan
$0.00
Payoff Date
-
๐Ÿ“‹ Amortization Schedule โ–ผ
Payment # Payment Principal Interest Balance
Scenario A
A
First Scenario
$
%
$
Scenario B
B
Second Scenario
$
%
$
๐Ÿ“Š
Comparison Results
Scenario A Final Balance
$0.00
Scenario B Final Balance
$0.00
Difference
$0.00
Final Balance Comparison
A: 50%
B: 50%
Enter values to compare
๐ŸŽฏ
Savings Goal Planner
$
$
%
๐Ÿ“Š
Goal Analysis
Required Contribution
$0.00
per month
Total Contributions
$0.00
Interest Earned
$0.00
Starting Balance Grows To
$0.00
Contribution Growth To
$0.00
๐Ÿ“‹ Year-by-Year Progress โ–ผ
Year Contributions Interest Balance Progress
โฑ๏ธ Rule of 72 Calculator

Estimate how long it takes to double your money at a given interest rate.

%
-
years to double
Rule of 72: 72 รท rate = years to double
Rule of 69.3: More accurate for continuous compounding
๐Ÿ”„ APR to APY Converter

Convert between Annual Percentage Rate and Annual Percentage Yield.

%
-
APY
๐Ÿ“… Present Value Calculator

Calculate the present value of a future sum of money.

$
%
-
present value today
๐Ÿ“ˆ Future Value Calculator

Calculate what today's money will be worth in the future.

$
%
-
future value
๐Ÿ’ต Simple Interest Calculator

Quick calculation for simple (non-compounding) interest.

$
%
-
total interest
Final Amount: -
๐ŸŽฏ Rate Finder

Find the interest rate needed to reach a goal.

$
$
-
annual rate needed
โœ“ Action completed