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Navigation: Home » Investing » Inflation Adjusted Gold Return Calculator

Inflation Adjusted Gold Return Calculator

Investing     February 23, 2019 by PK

Below is a gold return calculator which will calculate the return an investor might have made buying and selling gold (without transaction fees). We also include inflation adjustments using CPI.  Enter the ending and starting dates for a theoretical investment, and we’ll do the math!

(Note: for the first time you try to calculate a return, please give it a few seconds – the data file is a bit over 1MB.  After the first usage it should be noticeably quicker.)

If you find this interesting, please also see our Treasury Return Calculator, S&P 500 Total Return Calculator and Daily Inflation Calculator.

The Gold Return Calculator (With Daily Inflation Adjustment)

(This article has a Javascript calculator embedded – you must click through to use it)

This gold calculator takes daily gold prices (specifically, the 10:30 AM Gold Fixing price in the London Bullion Market) from the St. Louis Fed and calculates the difference in price levels.  Here’s the key to this calculator:

  • Starting Date – A theoretical investor would have purchased gold on this day.  (This may be modified by the tool if there is missing data – take a look after you hit calculate).
  • Ending Date – A theoretical investor would have sold gold on this day.  (This may also be modified by the tool if there is missing data – take a look after you hit calculate).
  • Total Gold Return – This will either be the total price return on gold from the starting to the ending date, or the same quantity adjusted for inflation.
  • Annualized Gold Return – The calculator will do the math on the number of days in the market and annualize the calculation for you.  This number is also adjusted for whether you use inflation or not.
  • Inflation Adjusted (CPI-U)? – Whether the calculation you did is using CPI adjusted values as explained in the Daily Inflation Calculator methodology section.

Methodology

The gold price used in the calculator is from the St. Louis Fed, and is the 10:30 AM price in the London Bullion market.  Not every day is listed, so the calculator may adjust the dates slightly to avoid weekends or days where there was no trading in London.

The inflation methodology is exactly the same as for the daily inflation calculator.  Please see the methodology section there.

I use Javascript date objects to calculate the number of days between two dates, and use those results to annualize the returns you see and to nicely match this data with the other calculators on this site.

Implications

Unlike with our 10 Year Treasury return calculator or the S&P 500 Total Return Calculator, an investor in gold didn’t have to worry about dividends.  Even with recent run-ups in the price of gold, the investor did have something in common with our theoretical Treasury or S&P 500 investor – the constant battle with inflation.  There are date ranges you can find in the tool where a nominal gain because of the price return of gold would leave real returns negative or flat.

Hopefully the majority of your usage will come with the inflation adjusted portion of this tool.

Picture of gold's returns since 1968: the gold return calculator uses this dataset
Gold’s Wild Ride Through 4/14/2013 (St. Louis Fed)

Limitations on the Gold Return Calculator

The gold return calculator’s results should be used for research or informational purposes, and not be relied on for precision!

As always, the number of assumptions in this tool limit its usefulness – you won’t be able to say with 100% precision how another investor performed.  Like our previous calculator, this tool assumes no transaction fees, management fees, storage fees, or anything of that nature.  Gold, of course, will have transaction fees in most cases, and since there is risk to storing physical gold, often storage and housing fees will also be paid.  The price is also an approximation, or a snapshot of the trading price at 10:30 AM in London.  Gold’s price may have varied widely during the day.

As for the tool, there are a number of off-by-one type errors you can run into around leap years.  The tool will always use 365 days as a year, regardless of whether February 29 would have appeared between the two dates or not – but hey, give me a break – the Treasury uses 360 day years to make monthly math easy.

Thank Yous

St. Louis Fed.  Couldn’t have done it without you, haha.

Is this a useful tool? Anything else you’d like to see added?

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Investing commosidty returns, fiat currency, gold, hard assets, london bullion market

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Comments

  1. Brick By Brick Investing says

    You guys are killing it with these calculators. I have had a lot of friends and family recently come ask me about investing in gold and silver. Unfortunately I few gold as an inflation hedge and not an investment.

    • PK says

      Man, you just blew our master plans!

      Expect silver in the very near future…

      • freeby50 says

        Then copper? 😉

        • PK says

          Honestly, the marginal cost of a calculator using this data is… well, really low. If you find something daily on the St. Louis Fed site (and it’s reasonably relevant here, haha), I’ll definitely put one together.

  2. freeby50 says

    From April 1980 to April 2000 gold had an inflation adjusted annual return of -6.417%.

    Then from April 2000 till today it grew real +11.2%.

    • PK says

      Do the last few days… haha.

  3. Shawn James says

    Thanks for added Gold Return Calculator that’s helpful for us. Yes, this is useful tool. No all functionality and button fine but here I have one question about gold investment that’s good time of invest in gold? or suggest me other metal for investment.

    • PK says

      Thanks for the comments!

      I couldn’t tell you on a good time to invest in gold or another metal – my knowledge on the commodity front limits me mainly to commodity ETFs. I’ve been investing in VAW for a while, but I haven’t invested directly in any precious metals.

      • Shawn James says

        Thanks for reply, No problem mate but that’s good advice for me. Can you share more information about VAW?

        • PK says

          Nothing much to say – it’s an ETF run by Vanguard which invests in commodities, so I don’t have to stay abreast of developments. I prefer it that way.

          • Shawn James says

            Great, Vanguard Materials ETFs !doing well.

          • Shawn James says

            Great, Vanguard Materials ETFs !doing well.

    • Be Here Now says

      The best time to invest in gold is NEVER. Gold is a lump of metal that generates no income and has no practical value.

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PK turns excessive caffeine into interesting posts, useful calculators, and interactive tools.

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