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Wardrobe Math · Verified 07/2026

What Is Cost-Per-Wear and How to Use It

The one formula that fixes clothes shopping: price divided by realistic total wears. How to estimate honestly, the category benchmarks, and the three traps that fool the math.

Reviewed & edited by Mr. Gauge

The short answer

Cost-per-wear (CPW) = price ÷ total realistic wears. A $480 blazer worn six times a month for five years costs $1.33 per wear; a $60 impulse shirt worn four times costs $15. Under $2/wear is investment territory; $2–6 is reasonable; above $6 is an expense. The formula only works with honest wear estimates.

The CPW curve and the verdict zones FIG · THE CURVE CPW = PRICE ÷ REAL WEARS $/WEAR TOTAL WEARS → ABOVE $6 — AN EXPENSE (OR A SOUVENIR) $2–6 — REASONABLE UNDER $2 — INVESTMENT TERRITORY $60 SHIRT, WORN 4× = $15 THE IMPULSE BUY $480 BLAZER, 6×/MO FOR 5 YRS = $1.33 THE THREE TRAPS — ASPIRATIONAL WEAR COUNTS · SALES WITH A DENOMINATOR OF ZERO · CHEAP THINGS THAT DIE YOUNG
Fig — the only curve in shopping: frequency, not the sticker, is the asset

The formula

Divide the price by the number of times you will realistically wear it across its life. That single division reframes every purchase: the sticker stops being the cost, and frequency becomes the asset. Run any candidate purchase through the calculator — it applies the benchmarks below automatically.

The benchmarks

Under $2 per wear is investment territory — daily-rotation pieces like good trousers, white sneakers and a navy blazer live here effortlessly. $2–6 is reasonable for genuinely useful but less frequent pieces — the wedding-grade poplin shirt, the winter coat. Above $6 demands an honest question: is this a garment or a souvenir?

The three traps

The aspiration trap: estimating wears for the life you plan, not the life you have. If you attend one gala a year, the tuxedo’s denominator is one. The sale trap: a discount lowers the numerator but does nothing for a denominator of zero — a bargain you don’t wear has infinite CPW. The durability trap: cheap pieces that die young have secretly high CPW; a $45 tee that survives twelve wears costs more per wear than a $220 blazer. Durability is why construction — welted soles, canvas jackets, dense weaves — is the quiet variable in every calculation.

Make it a habit

Log purchases as you make them and review twice a year — the Seasonal Checklist rhythm exists for exactly this. After two cycles, your worst spending pattern becomes visible in one column, and it stops.

To keep the whole book — every purchase logged, every verdict automatic — The Wardrobe Ledger runs this system permanently. $24.

Edge cases, answered

How do I estimate wears honestly?
Look backward, not forward: how often do you wear the most similar thing you already own? Aspirational wear counts are how expensive mistakes pass the math.
Does CPW justify any expensive purchase?
No — it justifies expensive things you'll genuinely wear constantly. It's equally good at exposing costly pieces with no occasion attached.
Should I include care costs?
For precision, yes: add dry-cleaning or resoling to the price. A resoleable boot's CPW keeps falling for a decade — that's the whole argument for welted construction.

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