Online Investment Calculator - Future Value Projection Tool
Investment Calculator solves for the end amount, contribution, return rate, starting amount, or time, with compounding, charts, and full schedules.
Investment
End Balance ($):
Total Principal ($):
Total Interest ($):
End Balance ($):
Required contribution end of each month ($):
Total Principal ($):
Total Interest ($):
End Balance ($):
Required annual return rate:
Total Principal ($):
Total Interest ($):
End Balance ($):
Required initial investment amount ($):
Total Principal ($):
Total Interest ($):
End Balance ($):
Required investment length (Years)
Total Principal ($):
Total Interest ($):
| № | BEGINNING BALANCE ($) | INTEREST ($) | PRINCIPAL ($) | ENDING BALANCE ($) |
|---|
| № | BEGINNING BALANCE ($) | INTEREST ($) | PRINCIPAL ($) | ENDING BALANCE ($) |
|---|
What Is This Tool?
The Investment Calculator works out any one part of an investment plan. Choose what to solve for — the end amount, the contribution needed, the required return rate, the starting amount, or the time required — then enter the values you know. Set the compounding frequency and whether contributions land at the start or end of each month or year. It returns the end balance, total principal, and total interest, with a breakdown chart, a growth chart, and year-by-year and month-by-month schedules. The result can be downloaded as a PDF.
How to Use This Tool?
- Choose what you want to solve for.
- Enter the values you already know.
- Set the compounding frequency and contribution timing.
- Click Calculate to see the result and projection.
Key Features
- Solves for end amount, contribution, return rate, starting amount, or time.
- Supports compounding from monthly through to daily.
- Lets contributions fall at the start or end of each period.
- Splits growth into starting principal, contributions, and interest.
- Shows charts and full schedules with a PDF download.
Examples
- $20,000 plus $200 a month at 6% for 15 years grows to $107,245.61.
- Of that, $56,000.00 is principal you put in.
- And $51,245.61 is interest earned.
- To hit $107,245.61 in 15 years from $20,000, you'd add about $200 a month.
Common Use Cases
- Projecting the future value of an investment plan.
- Finding the monthly contribution needed to reach a goal.
- Solving for the return rate a target requires.
- Working out the starting amount or time needed.
- Comparing compounding frequencies and contribution timing.
Tips & Best Practices
- Use a realistic return rather than a best-case figure.
- Choose beginning-of-period contributions to earn slightly more.
- Match the compounding frequency to your account.
- Stay invested longer to let compounding work.
- Change one input at a time to compare scenarios.
Limitations
- It assumes a constant return and steady contributions.
- Taxes, fees, and inflation are not included.
- The solver modes use iterative estimates, so figures are approximate.
- Nothing is saved between sessions — only the current result can be exported as a PDF.
Frequently Asked Questions
- What can this calculator solve for?
- Any one of five values: the end amount, the contribution, the return rate, the starting amount, or the time required.
- Does contribution timing matter?
- Yes — contributions at the beginning of a period earn interest for longer, so they grow slightly more.
- What does compounding frequency change?
- More frequent compounding adds interest sooner, producing a slightly higher balance for the same rate.
- Why might the solved values be approximate?
- The rate and time modes are found by iteration, so they're very close estimates rather than exact figures.
Key Terminology
- Starting amount
- The initial lump sum invested before any contributions.
- Contribution
- An amount added regularly, each month or year.
- Return rate
- The assumed annual percentage growth on the investment.
- Compounding frequency
- How often interest is added to the balance.
- End balance
- The projected total value at the end of the investment.