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As a side benefit of this calculator's date accuracy, you can also use it to do date math calculations. That is, it will find the date that is "X" days from the start date or given two dates, it will calculate the number of days between them.

Calendar Tip: When using the calendar, click on the month at the top to list the months, then, if needed, click on the year at the top to list years. Click to pick a year, pick a month, and pick a day. Naturally, you can scroll through the months and days too. Or you can click on "Today" to quickly select the current date.

If you prefer not using a calendar, single click on a date or use the [Tab] key (or [Shift][Tab]) to select a date. Then, as mentioned, type 8 digits only - no need to type the date part separators. Also, because the date is selected, you do not need to clear the prior date before typing. If your selected date format equals mm/dd/yyyy, then for March 15, 2016, type 03152016.

Updated 09/15/2019: Your desired ROR

At some point, a user might need to know what they should pay for an investment to achieve a desired return-on-investment. Or what they need to sell it for if they have already entered into the invesetment.

With the most recent update, this calculator can now perform either calculation. All the user need do is provide the goal ROI (and click "Calc" to update). The calculator calculates the adjustment amount required for both the initial investment and the final value. It also calculates the absolute amount for both.

To double-check the accuracy of the results, copy and paste the value into the appropriate location and recalculate. The ROI should now equal your goal ROI (plus or minus a minimal rounding amount).

And now for an essential word about ROI/ROR financial calculators.

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154 Comments on “Roi Calculator”

financial online calculator Join the conversation. Tell me what you think.
    • Thanks Margy. Glad you found it useful. Do you know about the IRR Calculator on this site? It is also an ROI calculator. The difference between the two is that the IRR calculates ROI when there are many investments and / or withdrawals.

    • That’s interesting. Sorry it doesn’t do the job for you. However, since you have provided no details about the calculation itself or the type of device you are using, it is impossible for me to either offer suggestions or attempt to fix what may be broken. Also, I assume that `*@me.com` is not your valid email address, it is also impossible for me to contact you privately to resolve any issues.

      Perhaps you’ll come back here and read this and you’ll update your comment with more details?

    • You’re welcome. Along these lines, there is another calculator on this site which may be useful. The IRR Calculator calculates an annualized return as well. The difference is, the IRR calc. allows the user to input multiple investments and withdrawals. This can be used to include subsequent investment and/or withdrawals during the term you are measuring the ROI. Also, you can use it to include multiple mutual funds and calculate an overall ROI.

      Perhaps knowing about it will come in handy for you someday.

    • Very interesting use. I guess it depends on location and electric rates, but at this point, can someone switch just based on the economics?

  • Charlie Uslander says:

    IMHO the calculator should not permit Annualized ROI on investment windows less than a year as is the ethical norm:

    According to the CFA Institute’s Global Investment Performance Standards (GIPS),

    “Returns for periods of less than one year must not be annualized.”
    (Source: PROVISIONS OF THE GLOBAL INVESTMENT PERFORMANCE STANDARDS 5.A.4 [3])

    This is because an annualized rate of return over a period of less than one year is statistically unlikely to be indicative of the annualized rate of return over the long run.[4] Annualizing a return over a period of less than one year might be interpreted as suggesting that the rest of the year is most likely to have the same rate of return, effectively projecting that rate of return over the whole year.

    • I was not aware of this. However, (1) there is a big difference between an individual wanting to know an annualized return on one of their investments and a firm calculating an annualized return on a short term investment and using that ROI to promote their firm and products.

      (2) Additionally, it is important to be able to compare investments, and how does one compare them if they can’t be annualized?

      (3) I also believe I would have a lot of very upset people if I turned this feature off.

      What I’ve done though is edit your comment to provide a link back to the Institute’s site. And when this page is updated, I’ll probably add some details around this. It is a good point that one should be very careful about extrapolating. However, (4) I think it’s best not to hinder the tool but rather it is better to provide an education about its use and risk.

      Thank you for the comment. It is very much appreciated.

  • Jesse Ferrell says:

    Use ROI calculator associated with tracking watch list of stocks.
    Saves lots of time when compared to using hand calculator. Currently having problems trying to print out data due to information not being displayed on print out sheet. Strongly recommend seeking adds from Stock Broker firms to support your business. I’m not a broker just individual with a few stocks.
    In summary love your ROI Calculator!!

    • Thank you for your comment.

      First, I rolled out a change Monday that unfortunately broke printing on many calculators. I just rolled the change back and the problem appears to be fixed. If you try it, you may have to refresh/reload the page in your browser to make sure the change has downloaded. Thanks for letting me know.

      About the advertising. That’s tricky. The old site did have advertising and the income, while not nothing, was pretty low. Also, a lot of the advertising, to catch consumer’s attention, has become pretty obnoxious. I just hate the pop-ups that many sites now seem to be using. My hopes are, that I can eventually attract enough traffic to this site that I’ll be able to find a single sponsor that will pay slightly above market rates in order to have exclusive access to this site’s visitors and whose ads will be served directly from this site’s domain which means, I think, that an ad blocker won’t be able to block.

      I probably need to triple the unique visitors though – to about 300,000 / month.

  • This calculator is the best ROI calculator on the internet. No question about it, its the very best! It is simple to use and easy to understand. Very intuitive interface and does exactly what I would expect. Does not overload the user with useless extraneous options. Thanks to the software engineer who fabricated this useful tool. Best regards, Pablo

  • Dear sir,
    Please teach me.
    Am working in one financial sector.
    While am facing a customer., he ask.

    We give : 3 Lac loan in
    ROI 23 %
    processing fee : 2 %

    CUSTOMER calculate :
    My company EMI monthly : 11,613

    11,613*36 = 4,18,068 – 3Lac
    = 1,18,068 ÷ 36
    =3279.6 / 3280

    Now customer ask what is the ROI
    And how the roi calculated to rupees.

    Regards
    Arun
    Mobile 94 87 227 587

    —————– —————- —————-
    Mean while how convert roi to rupees
    And rupees to roi .

    Give an example sum.

    Regards
    Arun

    • I will be happy to try to help, but I’m not clear on everything. I don’t know what “EMI” is for one thing, and for another, the questions are implied ones I think rather than being direct ones. Please ask direct questions.

      I’ll try to answer what I think I understand.

      The ROI is no different if a loan is in Ruppees or if it’s in dollars, or any other currency.

      To calculate an ROI on a loan, you can’t use this calculator, because if it for lump sum investments. Please use the IRR Calculator. An IRR is also an ROI calculation. The difference it, the IRR Calculator works with a cash flow stream – in your case, that would be the loan payments.

      If you have any follow-up questions, please do NOT reply to the email you get. Rather, come back to the website and continue to post questions in the comment area. This way everyone benefits from the discussion and I might save some typing. Thanks!

  • Bob Christensen says:

    I made a lump sum investment more than 23 years ago and wanted to see what the annualized rate of return was. Your calculator worked great. It was easy, fast and I am confident, accurate. Thank you!

  • Mark W. aka Mr. Energy says:

    I’m trying to understand the ROI calculation.
    I work in the energy conservation industry.
    So I created a simple hypothetical example so I could ‘follow along’
    I put in an investment of $1,000,000 to purchase a widget to save energy. I determined the annual $ savings to be $250,000.
    The life of the widget is 15 years … therefore I save a total of $3,750,000 over the 15 year life. This is a gain of $2,750,000 over the 15 yrs
    I divide the $2,750,000 by 15 and that by the original investment, I get 18% annual return. But the calculator above says like 9% and change.

    I’m a little financially challenged with some of this, but understand some concepts. I’m trying to solidify this so I don’t have to constantly revisit this.

    • Good question. A couple of things…

      The formula you are using is calculating a gross return and allocating an equal portion of the return over the 15 years. That’s not the same thing as an annualized return.

      Additionally, this ROI calculator is to be used for a single investment followed by a single return on that investment at some point in the future. That to say, the return realized from the investment is not available until the day the investment matures or is liquidated. So the return is going to be lower than an investment that grosses the same amount, but where the return can be utilized prior to the maturity date.

      To calculate a return on an investment that involves intermediate cash flows (either additional investment and / or withdrawals) one should use the IRR Calculator.

      Please try it. And if you have other questions, just ask.

  • I was looking to calculate rate of return on investment property that we sold, but paid equal monthly payments for over a period of 17yrs (no interest). Plus, I’d like to be able to calculate the return after taxes are paid.

    • Please try the Ultimate Financial Calculator

      Scroll down the above page and you’ll see about 25 tutorials. Everyone should look at #1 to get an introduction into how this calculator works. Then the one the is applicable to your calculation is:

      22. Calculate Rate of Return (ROR) on Annuity
      How to set up an annualized ROR calculation

      If you look at the concepts discussed above, you can apply them to your real estate investment. Also, you can click on the “Setting” button and select “Analytics”. Turn on the IRR (which is an annualized ROI calculation) and the IRR will appear in the footer of the amortization schedule. If you have questions, just ask.

      You can also take a look at the IRR Calculator. This calculator is a bit more straight forward, but I think 17 years of input will be a little tedious.

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