Buy the phone
- Phone price
- $799
- Resale value
- Not included
- Net cost
- $799
Turn on “Include phone resale value” to see a net cost.
Phone vs Investment CalculatorWhat If You Invested Your Phone Money Instead?
Compare the cost of a smartphone today with the potential future value of investing the same amount.
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Phone vs Investment Calculator
See how your phone purchase compares with the potential growth of the same money if invested.
Your $799 Could Potentially Become
after 10 years at a 7% hypothetical annual return
Important: This calculator provides hypothetical illustrations for educational purposes only. Investment returns are not guaranteed, and actual results may differ.
The calculator does not provide personalized financial advice.
Starting amount$799The phone price you entered
Potential future value$1,572Hypothetical growth, before any fees or taxes
Potential gain+$773Future value minus starting amount
How Your Money Could Grow
View the chart data as a table
Invest the money
- Initial amount
- $799
- Potential future value
- $1,572
- In today's purchasing power
- $1,170
- Potential gain
- +$773
Hypothetical only. Actual returns vary and can be lower or negative.
The Difference Is Time
Today$799
10 years
Potentially$1,572
This is a hypothetical illustration. It assumes the same return every year, which real investments do not deliver.
Phone Upgrade Habit
What if you invested the money you might otherwise spend on repeated phone upgrades?
Phones over time, or the same money invested
Money spent on phone upgrades$3,9955 phones × $799
Potential investment value$7,651Each amount invested at the year it would have been spent
Potential difference$3,656Investment value minus money spent
Spending and hypothetical growth, year by year
See each phone and its hypothetical value
Important: This calculator provides hypothetical illustrations for educational purposes only. Investment returns are not guaranteed, and actual results may differ.
The calculator does not provide personalized financial advice.
What If You Bought a Cheaper Phone?
Compare two phone prices, then see what the price gap could become if it were invested instead.
How the calculator works, in plain language
Everything here is a hypothetical illustration built from a few simple formulas and the assumptions you choose. Change any assumption and the numbers change with it.
How Does the Phone vs Investment Calculator Work?
The calculator takes the price of a smartphone and asks a single what-if question: if that same amount were invested instead, what might it be worth later? You choose a hypothetical annual return and a length of time, and the tool applies compound growth to show a potential future value.
It then puts the two options side by side: the phone's price (or its net cost if you include resale value) next to the hypothetical value of the investment. The tool doesn't say which option is better. It shows the numbers so you can weigh them against what a phone is worth to you.
Future value = P × (1 + r)tP is the amount, r is the annual return as a decimal, t is the number of years.What Happens If You Invest $799 for 10 Years?
Compound growth means each year's growth is added to the balance, and the next year's growth is calculated on the larger total. At a hypothetical 7% a year, $799 grows to about $1,572 after 10 years, a gain of about $773.
| Years | Potential value | Potential gain |
|---|---|---|
| 5 | $1,121 | $322 |
| 10 | $1,572 | $773 |
| 20 | $3,092 | $2,293 |
| 30 | $6,082 | $5,283 |
Real returns are not smooth or guaranteed. They move up and down from year to year and can be lower than expected, or negative.
What Happens When You Upgrade Your Phone Every Few Years?
Phone spending often repeats. Buying a $799 phone every 3 years over 15 years means five purchases, or $3,995 in total. The Phone Upgrade Habit tab treats each of those purchases as its own hypothetical investment, made in the year the phone would have been bought.
Because money invested earlier has more time to grow, the first amount contributes the most and the last contributes the least. At a hypothetical 7% return, those five amounts could grow to about $7,651 by year 15. The calculator adds each one up and shows how the totals compare.
Value at year T = sum of P × (1 + r)(T − t)t is the year each phone would have been bought.Understanding Opportunity Cost
Opportunity cost is what you give up when you choose one use of money over another. Money spent on a phone can't also be invested at the same time, and the reverse is true too. It's a way of describing trade-offs, not a judgment about either choice.
A phone also delivers things a calculator can't put a number on: daily use, work, safety, photos, staying in touch. The calculator only measures the investment side of the trade, so it works best as one input among several.
How Inflation Changes Future Purchasing Power
Nominal value is the raw number of currency units. Real value adjusts that number for rising prices, showing what it might buy in today's terms. If you switch on the inflation setting, the calculator divides the future value by (1 + inflation)years.
For example, $1,572 after 10 years with 3% assumed yearly inflation is worth about $1,170 in today's purchasing power. The inflation rate is your own assumption. Actual inflation varies by country and by period.
Phone Resale Value and Depreciation
Many phones can be sold or traded in later, which lowers their net cost. How much you get depends on the device, its age, its condition, the market and demand at the time. No single depreciation rate is right for every phone, so the calculator never assumes one.
If you include resale value, you either type your own estimate or pick a depreciation rate and the number of years you'd own the phone. The net cost is the purchase price minus that resale value.
Frequently asked questions
What is a Phone vs Investment Calculator?
It's a free educational tool that compares the price of a smartphone with the hypothetical future value of investing the same amount. You choose the phone price, a hypothetical annual return and a time period, and it shows the potential outcome next to the phone's cost.
What happens if I invest $799 for 10 years?
At a hypothetical 7% annual return, $799 would grow to about $1,572 after 10 years, a gain of about $773. At 0% it stays $799, and at 10% it would be about $2,072. These are illustrations, not predictions.
How is the future value calculated?
The calculator uses compound growth: future value = amount × (1 + annual return)years. For $799 at 7% over 10 years, that's 799 × 1.0710, which is about $1,572. It assumes the same return every year and ignores fees and taxes.
Are investment returns guaranteed?
No. Investment returns are not guaranteed, and actual results can be higher, lower or negative. The 7% default is only a starting example. You can change it to any hypothetical return you like.
What happens if I upgrade my phone every three years?
Use the Phone Upgrade Habit tab. For example, a $799 phone every 3 years over 15 years is five purchases and $3,995 in total. Investing each of those amounts at the same times, at a hypothetical 7%, could grow to about $7,651 by year 15.
Can I include inflation?
Yes. Turn on “Adjust for inflation” and enter a yearly rate. The calculator will also show the estimated value in today's purchasing power, using future value ÷ (1 + inflation)years.
Can I include my phone's resale value?
Yes. Turn on “Include phone resale value”, then either enter an estimated resale value or estimate one from a yearly depreciation rate and the years you'd own the phone. The net cost is the purchase price minus the resale value.
Can I compare two different phone prices?
Yes. The “What If You Bought a Cheaper Phone?” calculator takes an original and an alternative price and invests the difference. For $799 versus $499, the $300 difference could grow to about $590 after 10 years at a hypothetical 7%.
Does the calculator provide financial advice?
No. It provides hypothetical illustrations for educational purposes only, and it doesn't tell you whether to buy a phone or invest. For advice about your own situation, consider speaking with a qualified financial professional.
Can I use the calculator in different currencies?
Yes. Choose US dollars, euros, British pounds, Canadian dollars, Australian dollars or Indian rupees. The math is the same in every currency. The selector changes how amounts are formatted and doesn't convert your numbers.
Disclaimer: This calculator provides hypothetical illustrations for educational purposes only. Investment returns are not guaranteed, and actual results may differ. It does not account for fees, taxes or changing market conditions, and it does not provide personalized financial advice.