Solve future value, present value, rate, or time. Compare simple and compounded growth with clarity. Use clean inputs, exports, formulas, examples, and interactive charts.
Use the fields below to solve for future value, present value, annual rate, or time period.
These examples show how different methods and rates change the ending value.
| Scenario | Principal | Annual Rate | Years | Method | Compounds | Future Value |
|---|---|---|---|---|---|---|
| Retirement saving example | $10,000.00 | 6.00% | 5.00 | Compound | 12 | $13,488.50 |
| Short-term simple growth | $8,500.00 | 4.25% | 3.00 | Simple | 1 | $9,583.75 |
| Quarterly compounding case | $15,000.00 | 7.20% | 4.00 | Compound | 4 | $19,982.42 |
Simple Interest Future Value: FV = PV × (1 + r × t)
Simple Interest Present Value: PV = FV ÷ (1 + r × t)
Simple Interest Rate: r = ((FV ÷ PV) - 1) ÷ t
Simple Interest Time: t = ((FV ÷ PV) - 1) ÷ r
Compound Interest Future Value: FV = PV × (1 + r ÷ n)n × t
Compound Interest Present Value: PV = FV ÷ (1 + r ÷ n)n × t
Compound Interest Rate: r = n × ((FV ÷ PV)1 ÷ (n × t) - 1)
Compound Interest Time: t = ln(FV ÷ PV) ÷ (n × ln(1 + r ÷ n))
PV is present value, FV is future value, r is annual rate, t is time in years, and n is compounding frequency.
Simple interest grows only on the original principal. Compound interest grows on both principal and prior interest, so balances usually increase faster over time.
More frequent compounding adds interest to the balance sooner. That slightly increases the effective annual rate and the final value, especially across longer periods.
Yes. Choose Interest Rate, enter the principal, target future value, time, and method. The calculator then derives the annual nominal rate needed.
Yes. Choose Time Period, enter the principal, future value, and annual rate. The result shows how many years are required to reach the target.
The effective annual rate reflects the real yearly growth after compounding. It helps compare options with different compounding schedules more fairly.
The chart begins at period zero to show the starting principal clearly. That makes total growth easier to visualize from the initial amount to maturity.
Yes. The same time-value math applies to savings balances, investment growth, and some loan comparisons. Always confirm lender fees separately.
The exports include the main results and the period breakdown. The PDF also places the growth chart into the downloadable report.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.