Investment Calculator
Investing & MarketsProject the future value of an investment, or solve for the contribution, return rate, starting amount, or time needed to reach a specific goal amount.
Future Value
Total value at the end of the period, including your starting amount and every contribution
Total Contributions
$24,000.00
The sum of every contribution made over the full time period, not counting the starting amount
Interest Earned
$20,713.58
Total interest earned, excluding your starting amount and contributions
Return on Starting Amount
447.1%
Future value as a percentage return on your starting amount alone, not counting contributions
Found this calculator useful?
From Scratch To $10K/Month In 60 Days
This is a proven money making system that takes students by the hand to make at least $10,000 per month, every month. Students get 12 weeks of guided coaching in addition to the "MPS Super Funnel" and tools.
We value your privacy and promise not to sell or misuse your information. Here's our privacy policy.
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Investing & Markets calculators
Most investment calculators only do one thing: show what a fixed contribution and return rate will grow into by some future date. This one works the other way too. Pick what you actually want to solve for, the final balance, how much to contribute each period, what rate of return you would need, how much to start with, or how long it will take, and enter the rest. The math is the same compound-growth formula behind nearly every long-term savings and investing decision; this calculator just lets you rearrange it around the question you are actually asking.
Enter a starting amount, a recurring contribution (choosing whether it lands at the start or end of each period), an annual return rate, how often that return compounds, and a time horizon. Switch modes to solve for a different variable instead, and enter a goal amount in its place; the calculator finds whichever value you removed, using straightforward algebra for the contribution and starting amount, and a numerical search for the return rate and time length.
A few honest limits: the return rate you enter is a fixed, hypothetical assumption, not a guarantee. Real markets do not compound at a smooth, constant rate year over year. This tool also does not account for taxes, investment fees or expense ratios, or inflation; the number you get is a nominal projection, useful for planning and comparison, not a promise. For a version tailored to a specific goal or asset type, a 529 college fund, index funds, real estate, or startup equity, see the related calculators below.
How the 5 Calculation Modes Work
Switch modes using the dropdown at the top of the calculator. Each mode hides the variable you are solving for and asks for a goal amount instead:
- End Amount - the default mode. Enter everything you know and see what your investment grows to.
- Additional Contribution - enter your goal amount and see how much you need to contribute each period to reach it.
- Return Rate - enter your goal amount and see what annual return you would need, found numerically since there is no simple formula for solving rate directly.
- Starting Amount - enter your goal amount and see how much you would need to invest today, with no other changes, to reach it.
- Investment Length - enter your goal amount and see how many years it will take, found the same numerical way as Return Rate.
Compounding Frequency and Contribution Timing
Compounding frequency controls how often your return is added to the balance and starts earning its own return: annually, quarterly, monthly, or daily. More frequent compounding produces a slightly higher result for the same nominal rate, since interest starts earning interest sooner. If you only want a straight future-value projection without solving for anything else, the Compound Interest Calculator covers that same calculation with a simpler, single-mode layout.
Contribute At controls whether each periodic contribution lands at the beginning or the end of its period. A contribution made at the beginning of the period earns a return for that whole period; one made at the end does not start earning until the next period begins. Over a long time horizon with regular contributions, beginning-of-period contributing produces a modestly larger final balance.
What Counts as a Good Investment Return
There is no single right answer, since return and risk move together: a higher typical return generally comes with more year-to-year volatility. These are commonly cited long-run figures for a few broad categories, useful as a starting point for the Annual Return Rate field, not a prediction of any specific investment:
| Investment Type | Typical Long-Run Annual Return | Relative Risk |
|---|---|---|
| US large-cap stocks | ~10% before inflation | Higher - value swings significantly year to year |
| Investment-grade bonds | ~4-5% | Lower - more stable, yields shift with interest rates |
| High-yield savings and CDs | ~4-5% at current rates | Lowest - principal is stable and often insured |
| US real estate (price appreciation only) | ~4-5% | Medium - illiquid, plus potential rental income |
The large-cap stock figure above is a nominal, before-inflation average pulled from nearly a century of real market data; a widely used public dataset covering every year back to 1928 is linked in the sources below. For a projection built around broad-market index funds specifically, see the Investment Calculator for Index Funds; for real estate, see the Investment Calculator for Real Estate.
What This Calculator Does Not Account For
The return rate you enter is treated as fixed and constant, which no real investment actually does; real returns vary year to year, and the order those returns happen in (sequence-of-returns risk) can matter as much as the average itself, especially if you are withdrawing money during a downturn rather than only contributing.
This calculator also does not subtract taxes on gains or dividends, investment fees or fund expense ratios, or adjust the result for inflation; every figure shown is a nominal dollar amount in today's terms, not its future real purchasing power. Build in a margin for these when using the result to plan toward a real goal.
Saving in a tax-advantaged account, like a 401(k) or IRA, changes the real return-versus-tax tradeoff considerably. For a projection built specifically around a 529 education account, see the Investment Calculator for 529 College Fund.
Investment Calculators by Asset Type
This is the general-purpose, goal-seeking version. For a calculator already set up around a specific asset type or goal, one of these may fit better:
- Investment Calculator for Index Funds - broad-market fund investing
- Investment Calculator for Bonds - fixed-income investing
- Investment Calculator for Real Estate - property investment growth
- Investment Calculator for Dividend Stocks - dividend-focused equity investing
- Investment Calculator for 529 College Fund - education savings
- Investment Calculator for Crypto Portfolio - cryptocurrency holdings
- Investment Calculator for Gold and Commodities - commodity investing
- Investment Calculator for Peer-to-Peer Lending - P2P lending returns
- Investment Calculator for Startup Equity - startup equity growth
- Investment Calculator for Angel Investing - angel investment returns
Frequently Asked Questions
What is the difference between this and the Compound Interest Calculator?
This calculator can solve for five different variables (final balance, contribution, return rate, starting amount, or time), while the Compound Interest Calculator only projects a final balance forward from the inputs you give it. If you already know your starting amount, contribution, rate, and time, and just want the projection, the Compound Interest Calculator is the simpler tool.
How much do I need to invest monthly to reach $1 million?
It depends heavily on your starting amount, return rate, and time horizon. Switch this calculator to Additional Contribution mode, set your goal amount to $1,000,000, and enter your own starting amount, return rate, compounding frequency, and years to get a real number for your situation.
What return rate do I need to hit a specific goal?
Switch to Return Rate mode, enter your starting amount, contribution, time horizon, and goal amount, and the calculator solves numerically for the annual return rate that gets you there. If the required rate comes back unrealistically high, consider increasing your contribution or time horizon instead.
How long will it take to reach my investment goal?
Switch to Investment Length mode, enter your starting amount, contribution, and return rate, and set a goal amount. The calculator solves numerically for the number of years needed.
Is $1,000 a good amount to start investing with?
As a one-time amount with no further contributions, $1,000 takes a long time to grow into a large sum on its own. As the start of a plan with regular ongoing contributions, it is a perfectly reasonable starting point; the contribution habit typically matters more than the size of the initial deposit.
Does the beginning-versus-end contribution timing setting actually matter much?
Usually only modestly. Over a long, regularly contributed timeline it typically adds up to a low single-digit percentage difference in your final balance, rarely a reason on its own to change how you contribute. Run your own numbers in both settings and compare the End Amount result to see the actual size of the gap for your situation.
How can I roughly approximate an after-inflation result myself?
A common shortcut is to subtract your assumed inflation rate from the Annual Return Rate before entering it; a 10% nominal return assumption with 3% inflation becomes a rough 7% real-return entry. It is an approximation, not an exact conversion, but it is a reasonable way to see what your projected balance is worth in today's purchasing power.
Why is Return Rate solved numerically instead of with a formula?
When there are regular contributions on top of a starting amount, the equation for the future value cannot be rearranged into a simple formula for the rate. The calculator instead searches for the rate that produces your goal amount, narrowing in until the result matches to a fraction of a cent.
What compounding frequency should I choose?
Match it to your actual investment if you know it: most brokerage and stock market investments are commonly modeled as compounding daily or monthly, while a bond or CD usually states its own compounding frequency directly. When in doubt, monthly is a reasonable middle-ground default.
Spot a mistake? Tell us what's wrong.
Request a calculator. The most-requested ones get built first in our monthly batch.
Request a calculatorWant this calculator on your website?
Embed the Investment Calculator on any site — no code needed. Customize colors, remove branding, and track usage.
