Budgeting & Income
Cost Per Use Calculator
Price tells you what leaves your account today. Cost per use tells you what the thing is worth having. A $400 coat worn twice a week for five years costs less per wearing than an $80 one replaced every winter.
Formula shown below · Tested against worked examplesHow we verify
Be honest — this is where the maths usually turns.
What you could sell it for when you're done.
Cost per use: $1.17
Cost per use
$1.17
Net cost spread across every use.
- Total uses
- 300
- Net cost after resale
- $350
- Cost per year
- $70.00
Compare scenariosTry three values of one input
| Purchase price | |||
|---|---|---|---|
| Cost per use | $1.03 | $1.17+$0.14 | $1.30+$0.27 |
| Net cost after resale | $310 | $350+$40 | $390+$80 |
| Cost per year | $62.00 | $70.00+$8.00 | $78.00+$16.00 |
Every other input stays at the value you set above — currently $400 for purchase price. Differences are measured against the first column.
Saved scenariosSave this calculation
Saved in this browser only — no account, and nothing is sent to us. Clearing your browser data deletes them.
How this calculator works
Total uses = uses per year × years kept. Net cost = price − resale value, floored at zero. Cost per use divides one by the other; cost per year divides the net cost by the years.
Purchase price only — maintenance, consumables, insurance, and storage are excluded. Nothing is discounted for the time value of money, which is immaterial at these amounts and horizons.
Formula
Net cost = Price − Resale
Total uses = Uses per year × Years owned
Cost per use = Net cost ÷ Total uses- Price
- What you paid
- Resale
- What you expect to recover when you sell it
- Uses per year
- Realistic frequency, not aspirational
The denominator is the input people overestimate. Halving the expected uses doubles the cost per use, which is why this calculation flatters purchases so easily.
What this assumes
- The number of uses you expect. Optimistic use estimates are the usual reason this calculation flatters a purchase.
- Purchase price only — maintenance, storage and resale value are excluded unless entered.
- It measures cost per use, not whether the purchase was necessary.
What changes this number
- Expected uses
- The denominator, and the input people overestimate most. Halving it doubles the cost per use.
- Durability
- An item that fails early raises the cost per use retroactively, which is the argument for buying quality once.
- Resale value
- Reduces the true cost for items with a real second-hand market and is worth entering where one exists.
A worked example
Take the $400 coat, 60 wears a year scenario. These figures are produced by the calculator above, not written alongside it, so they always match what the tool returns.
What you enter
- Purchase price
- $400
- Uses per year
- 60
- Years you'll keep it
- 5 years
- Resale value later
- $50
What it returns
- Cost per use
- $1.17
- Total uses
- 300
- Net cost after resale
- $350
- Cost per year
- $70.00
Sources
This calculator uses no external data — the result follows entirely from the formula above and the values you enter, so there is nothing to cite beyond the arithmetic.
Calculator last reviewed August 9, 2026. How we verify
Try an example
Frequently asked questions
How is cost per use calculated?
Subtract anything you will recover by reselling, then divide by the total number of uses — uses per year multiplied by the years you keep it. A $400 coat worn 60 times a year for five years and resold for $50 works out to about $1.17 per wearing.
Does this justify buying expensive things?
Only when the expensive version genuinely lasts or gets used more. The maths cuts both ways: it is just as good at exposing the premium item worn twice, and the equipment bought for a hobby abandoned in March. The honest input is uses per year, not price.
What about maintenance and running costs?
Not included — this covers purchase price against uses. For things that cost money to run (a car, a printer, a boat), add the annual running cost to the price before entering it, or the comparison flatters the expensive option.
Should I use this for subscriptions?
Yes, and it is unusually revealing there. Enter the annual price, the number of times you actually used it, and one year: a $180 streaming service watched eight times costs $22.50 an evening, which is a different decision from '$15 a month'.
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Disclaimer: DayCents provides this calculator for educational purposes only. Results are estimates based on your inputs and the stated assumptions — they are not financial advice, a quote, or an offer of credit. Consult a qualified financial professional before making major money decisions.