Answer in brief
Calculator cost per wear = (purchase price + alterations − entered resale value + care per wear × planned wears) ÷ planned wears. The resale input is a scenario until the sale happens; repairs and selling fees require a separate ledger.
Start with the answer, then define the boundary
A wardrobe cost-per-wear calculator answers a narrow question: what is the modeled cost of each use? Its inputs are purchase price, alterations, care cost per wear, an entered resale value and planned wears. It computes (purchase + alterations − resale + care per wear × wears) ÷ wears. Wears must exceed zero. The calculator labels the count planned and the resale value expected; you can enter recorded wears for a retrospective view, but a future sale remains an assumption until money arrives. Repairs, selling fees and storage are outside this tool. Keep those in a separate ledger if they matter to your decision.
This method is most useful at a decision point: keep, tailor, repair, borrow, replace or leave a tempting purchase on the shelf. It is less useful as a leaderboard mixing a work uniform with an occasional formal outfit. Those items do different jobs. A low figure may reflect real value, but the number alone does not tell you that you liked wearing the item. Conversely, an expensive one-off for an important event need not be called a failure because it lacks dozens of wears. Name the purpose first; let the arithmetic inform, rather than dictate, the decision.
Choose costs that belong to the garment
Start with the amount actually paid, including unavoidable non-refundable delivery in the purchase input if you choose that boundary. Add tailoring in alterations. Estimate care as a cost for each wear, using the same method across items. If you wash a full load together, do not allocate the entire bill to one shirt. Repairs are not a calculator field: note them beside the result in a separate ownership ledger. Avoid comparing a complete historical ledger for one item with a purchase-only estimate for another; missing data can manufacture a winner.
A discount percentage is not a cost. The purchase field holds what left your account, not the crossed-out ticket. The calculator allows an expected resale value for planning; that figure is a scenario, not recovered cash. Enter zero for a conservative case. If a sale later happens, use the amount actually received and record selling costs separately. Put one-off costs and repeated care on different lines, and do not pretend that repair or platform fees are included automatically. This keeps the displayed result interpretable even when a fuller ownership ledger would be preferable.
Count use honestly, then forecast separately
A ‘wear’ should be a real occasion of use under a rule you can repeat. A day in a jacket may count once even if you take it off at lunch; trying it on at home normally does not. Record each wear quickly in a note, calendar or photograph, then check the tally monthly. If two people share a coat and the question is household cost, their actual uses can be counted together. If the question is your personal wardrobe, use only yours. These choices do not change the formula, but they change what its denominator means.
Before buying, actual wears do not exist. Make three explicit scenarios instead: conservative, plausible and demanding. The demanding scenario should not be chosen merely because it makes the item look affordable. Look at how often a similar piece was worn last season and at realistic combinations with clothes you own. State the expected period and future care assumption beside each scenario. Once the garment is in use, replace those guesses with the ledger. This separation prevents an estimate from being reported as an observed value or used to justify a purchase you were going to make anyway.
Read the care label before estimating upkeep
Care can change both the numerator and the chance that the garment will be worn. The US Federal Trade Commission's clothing care guidance explains that, for garments covered by its rule, manufacturers and importers provide supported cleaning instructions and warnings. That is a US labeling rule, not a universal law for every market. As a shopping practice anywhere, read the actual garment's instructions rather than assuming a fabric name guarantees home washing. A lined, trimmed or decorated piece may require a different process from a plain fabric sample. Ask what cleaning the garment will realistically receive in your household.
Record a quoted professional cleaning expense only when you intend to use that service; do not borrow a number from a different city or claim one universal rate. Consider whether a small alteration could make an owned garment wearable before paying for another. The US Environmental Protection Agency recommends maintaining and repairing items so they need replacing less often and describes refuse, reduce, reuse and repair as waste-reduction actions. That advice supports considering repair; it does not prove a specific garment's carbon footprint or turn cost per wear into an environmental score. Money, material impact and personal use are related but distinct questions.
A fully hypothetical example you can check
Select EUR in the tool. Imagine a jacket bought for €120, altered for €20 and expected to need €0.25 of care each time it is worn. Enter resale value €0 and 80 planned wears. These are invented teaching inputs, not a merchant price or market average. The calculator computes care of €0.25 × 80 = €20, then (€120 + €20 − €0 + €20) ÷ 80 = €2 per wear. At 40 planned wears, care is only €10, so the same formula gives (€120 + €20 + €10) ÷ 40 = €3.75, not €4. The care input grows with the wear count; keeping a fixed €20 while changing wears would use a different model.
The tool's doubled-wears comparison uses 160 planned wears and gives (€120 + €20 + €0.25 × 160) ÷ 160 = €1.125. In this hypothetical scenario, 100 planned wears at the same care rate would produce (€120 + €20 − €0 + €0.25 × 100) ÷ 100 = €1.65. If you enter an expected resale value of €30, the modeled result becomes (€120 + €20 − €30 + €25) ÷ 100 = €1.35. That €30 is not recovered money until a sale occurs. A later €16 repair is outside the calculator: a separate full ledger would add it to the total, giving (€120 + €20 + €25 + €16 − €0) ÷ 100 = €1.81 before any sale. Keep the tool estimate and that fuller ledger distinctly labeled.
Compare alternatives without forcing a false winner
Use the same time frame and inclusions for any alternative. Imagine a cheaper jacket at €70 that needs €10 of alteration and gets ten wears, with no other assigned cost or proceeds: (€70 + €10) ÷ 10 = €8 per wear. That is a hypothetical comparison, not a claim that low-priced clothing performs worse. It shows why a sale price alone cannot determine value. The honest comparison asks whether both jackets could meet the same need, whether each fits now, and whether the estimated use has any basis in your previous behavior. A piece you cannot comfortably move in may remain unworn regardless of its mathematical promise.
Also look at the marginal decision. If an already-owned garment needs a €15 repair and you expect to wear it ten additional times, the forward-looking repair cost is €1.50 per additional wear. Historical purchase spending is already gone; it matters for a lifetime record but should not be paid again in a keep-versus-replace decision. Consider rental or borrowing for rare needs, and inspect return terms before buying something uncertain. The EPA's reuse and repair guidance is a reason to include those options in the choice set, not a guarantee that any particular option always has the smallest footprint.
Use the calculator as a scenario tool
Enter purchase, alterations, care per wear, expected resale and planned wears in one currency. The calculator multiplies care by wears, subtracts entered resale from purchase plus alterations and divides by the same positive wear count. For a possible purchase, run conservative and plausible future wears and label both outputs estimates. If the result looks too low, inspect an inflated wear count or speculative resale. If it looks high, inspect the care estimate. Repairs and selling fees belong in a separate adjustment because no input field accepts them.
For a quick threshold with zero resale, the example's fixed €140 purchase-plus-alteration amount is spread across wears and €0.25 of care is added each time: cost per wear = €140 ÷ wears + €0.25. At a personal €4 target, at least 38 wears are needed; at €2, exactly 80. These targets are preferences, not industry standards. Compare the required use with your next twelve months and existing outfits. An optimistic sale value could lower the modeled threshold, but only by adding uncertainty. If the required wears are implausible, the calculator has already helped before you spend.
Keep a useful record after the purchase
Write a short note when you buy: role, price, likely combinations, the care instruction and the reason the item is missing from your wardrobe. Review after a month and a season. If the piece stays unworn, diagnose the obstacle: fit, weather, styling, cleaning effort or simply no real need. A tailor, a different combination, lending it or reselling it may be more helpful than buying a second version. Update the cost fields when money changes hands and the wear count when use occurs; a single live record is easier to trust than a perfect spreadsheet assembled from memory a year later.
The practical verdict is deliberately modest. Cost per wear is arithmetic attached to a declared scope. It can reveal that an inexpensive purchase had little use, or that a repair was worthwhile in your own budget. It cannot certify durability, worker conditions, comfort or total environmental impact. Those judgments need other evidence. Use the figure to make a more honest wardrobe conversation possible: what do I repeatedly reach for, what does it cost me to keep it useful, and what purchase can I avoid because the answer is already hanging at home?
Practical checklist
- Name the garment's actual role and check whether something already owned serves it.
- Enter purchase, alterations, care per wear, resale assumption and planned wears in one currency; track repairs separately.
- Count wears, not days owned or outfits imagined; use zero resale until a sale is complete.
- Compare realistic low, middle and high wear scenarios before buying.
- Review the care label, fit and repair options, then update the ledger after use.
Questions and answers
What counts as one wear?
Choose one consistent rule, such as a day or occasion on which the garment was actually used. Do not count trying it on, time hanging in a wardrobe or an outfit planned but never worn. Use the same rule for the items you compare.
Should I enter a resale price I hope to receive?
The calculator accepts an expected resale value for a scenario. Enter zero for a conservative view until a sale is complete. For an observed lifetime ledger, use actual net proceeds and account for selling fees separately.
Does a lower cost per wear mean a better purchase?
No. The ratio cannot establish whether the piece fits, is comfortable, meets a real need or has a lower environmental impact. It is useful when comparing credible alternatives for the same job, alongside those other questions.