How the carpet vs hardwood comparison works
A floor has three costs over 25 years, not one: the upfront install, the replacements, and the resale value at the end. Carpet is installed three times over 25 years — at year 0, year 10 and year 20 — because it lasts about 10 years. Hardwood is installed once and lasts the full 25 years, so it has no replacement. Hardwood is also worth about $3,000 to the house when it sells, while a worn carpet is worth nothing; the net cost is the gross cost minus that resale value. Divide by 25 and you have the net cost per year.
At the defaults — 1,000 sq ft, carpet $5/sq ft installed with a 10-year lifespan, hardwood $12/sq ft installed with a $3,000 resale uplift — the carpet upfront is 1,000 × $5 = $5,000.00 and the hardwood upfront is 1,000 × $12 = $12,000.00, so carpet wins upfront by $7,000.00. The carpet gross is 3 × $5,000.00 = $15,000.00 and the hardwood gross is $12,000.00, so hardwood wins gross by $3,000.00. And the carpet net is $15,000.00 while the hardwood net is $12,000.00 − $3,000.00 = $9,000.00 — so hardwood wins net by $6,000.00, or $600.00 a year against $360.00.
| Carpet | Hardwood |
|---|
| Upfront | $5,000.00 | $12,000.00 |
| Installs in 25 years | 3 | 1 |
| 25-year gross | $15,000.00 | $12,000.00 |
| Resale value | $0.00 | $3,000.00 |
| 25-year net | $15,000.00 | $9,000.00 |
| Net cost per year | $600.00 | $360.00 |
The worked example, line by line
Setup: 1,000 sq ft; carpet $5/sq ft installed, 10-year lifespan; hardwood $12/sq ft installed, $3,000 resale uplift; 25-year horizon.
Line 1 — the upfront cost. Carpet: 1,000 × $5 = $5,000.00. Hardwood: 1,000 × $12 = $12,000.00. Carpet wins by $7,000.00.
Line 2 — the installs. Carpet lasts 10 years, so over a 25-year horizon it is installed 3 times (years 0, 10 and 20). Hardwood lasts 25 years, so it is installed once.
Line 3 — the 25-year gross. Carpet: 3 × $5,000.00 = $15,000.00. Hardwood: 1 × $12,000.00 = $12,000.00. Hardwood wins by $3,000.00.
Line 4 — the 25-year net. Carpet: $15,000.00 (no resale). Hardwood: $12,000.00 − $3,000.00 = $9,000.00. Hardwood wins by $6,000.00.
Line 5 — the net cost per year. Carpet: $15,000.00 ÷ 25 = $600.00/yr. Hardwood: $9,000.00 ÷ 25 = $360.00/yr.
Line 6 — the break-even hardwood price. Hardwood ties carpet on net cost when its installed price is ($15,000.00 + $3,000.00) ÷ 1,000 = $18.00/sq ft. Buy hardwood below that and hardwood wins net; above it, carpet wins net.
Every branch, checked
500 sq ft: the carpet upfront is 500 × $5 = $2,500.00 and the hardwood upfront is 500 × $12 = $6,000.00 (carpet by $3,500.00); the gross is $7,500.00 against $6,000.00 (hardwood by $1,500.00); and the net is $7,500.00 against $3,000.00 (hardwood by $4,500.00). A smaller area shrinks every number by half, but the winner is the same at every size.
Carpet at $8/sq ft: the carpet gross rises to 3 × 1,000 × $8 = $24,000.00, so the net is $24,000.00 against $9,000.00 for hardwood — hardwood wins net by $15,000.00. Expensive carpet is the worst of both worlds: it costs nearly as much as hardwood to buy and still has to be replaced twice.
Hardwood at $8/sq ft: the hardwood gross falls to 1,000 × $8 = $8,000.00, so the net is $8,000.00 − $3,000.00 = $5,000.00 against $15,000.00 for carpet — hardwood wins net by $10,000.00. Cheap hardwood wins at every stage: upfront, gross and net.
Resale $0: with no resale uplift, the hardwood net is the gross cost: $12,000.00 against $15,000.00 for carpet, so hardwood wins net by $3,000.00. Unlike vinyl, hardwood does not need the resale value to win: it wins on the replacements alone, and the resale is a bonus.
Reverse — the break-even hardwood price: hardwood ties carpet on net cost when its installed price is ($15,000.00 + $3,000.00) ÷ 1,000 = $18.00/sq ft. At $12 a square foot hardwood is well below that, so hardwood wins net by a wide margin; at $19 a square foot it is above, so carpet wins net. The $18 line is where the two floors are exactly equal over 25 years.
What the defaults assume
The model counts install, replacements, and resale only: it does not count the cost of removing the old floor, the underlay, the trim, the cleaning of carpet, or the refinishing of hardwood. It assumes carpet lasts 10 years and is replaced twice at the same price — in reality carpet prices may fall, and a carpet in a low-traffic room may last 15 years. It assumes hardwood lasts the full 25 years — a good solid hardwood in a dry room can last that long and longer, but a hardwood floor in a wet room will not, and it may need refinishing once, which this model does not count. It assumes the resale uplift holds: hardwood adds about $3,000 to a house, but the real number depends on the buyer and the market. It assumes prices stay flat for 25 years, which they will not. Rounding convention: money is rounded to cents and all figures are computed from unrounded values, rounded only for display.
Output · formula · meaning
| Output | Formula | What it means |
|---|
| Carpet upfront | area × carpet $/sq ft | $5,000.00. |
| Hardwood upfront | area × hardwood $/sq ft | $12,000.00; carpet wins by $7,000.00. |
| Carpet installs | ceil(25 ÷ carpet lifespan) | 3 (years 0, 10, 20). |
| Carpet 25-yr gross | installs × area × carpet $/sq ft | $15,000.00. |
| Hardwood 25-yr gross | area × hardwood $/sq ft | $12,000.00; hardwood wins by $3,000.00. |
| Carpet net | gross (no resale) | $15,000.00. |
| Hardwood net | gross − resale uplift | $9,000.00; hardwood wins by $6,000.00. |
| Net cost per year | net ÷ 25 | Carpet $600.00, hardwood $360.00. |
| 500 sq ft | same model, 500 sq ft | Upfront $2,500.00/$6,000.00, gross $7,500.00/$6,000.00, net $7,500.00/$3,000.00. |
| Carpet $8/sq ft | same model, carpet $8 | Gross $24,000.00, net $24,000.00/$9,000.00. |
| Hardwood $8/sq ft | same model, hardwood $8 | Gross $8,000.00, net $15,000.00/$5,000.00. |
| Resale $0 | same model, resale $0 | Net = gross $15,000.00/$12,000.00, hardwood by $3,000.00. |
| Reverse: break-even hardwood price | (carpet gross + resale uplift) ÷ area | $18.00/sq ft. |
Who uses this
- The homeowner flooring a living room: they learn carpet costs $15,000.00 net over 25 years against $9,000.00 for hardwood — and hardwood is the floor buyers pay extra for, so the floor that looks better is also the cheaper one.
- The landlord fitting a rental: they will never see the resale value, but with resale at $0 hardwood still wins net by $3,000.00 — so they fit hardwood, knowing the carpet would need replacing twice in 25 years anyway.
- The couple with a dog: hardwood is easy to clean and does not hold smells, and it wins net by $6,000.00 — so the floor that survives the dog is also the floor that costs less over 25 years.
- The renovator who found cheap hardwood: at $8 a square foot installed, hardwood wins upfront at $8,000.00 against $5,000.00 for carpet and wins net by $10,000.00 — so they buy the hardwood before the price goes back up.
Accuracy & limitations
The math is exact for the numbers you enter: the upfront is the area times the installed price, the gross adds the replacements, and the net subtracts the resale value. What the model cannot do is know your house: carpet in a sunny room may fade and need replacing sooner, and hardwood in a low-traffic spare room may last 50 years. It leaves out removal of the old floor, underlay, trim, carpet cleaning, and hardwood refinishing — ask the installer whether the quote includes those. It assumes the resale uplift holds, but the real number depends on the buyer and the market, and a buyer who plans to rip the floor out will pay nothing for it. It assumes prices stay flat for 25 years, which they will not: carpet prices and hardwood prices move with oil and with fashion. For the floor itself, see carpet cost calculator; for the room around it, see paint cost calculator.
Cite this calculatorBright Side Kit. “Carpet vs Hardwood Flooring: 25-Year Cost Calculator.” brightoolbox.com, 2026. Method: carpet upfront = area × carpet $/sq ft; hardwood upfront = area × hardwood $/sq ft; carpet installs = ceil(25 ÷ carpet lifespan); carpet gross = installs × carpet upfront; hardwood gross = hardwood upfront; carpet net = carpet gross; hardwood net = hardwood gross − resale uplift; net per year = net ÷ 25; break-even hardwood price = (carpet gross + resale uplift) ÷ area. Defaults: 1,000 sq ft, carpet $5/sq ft, 10-year lifespan, hardwood $12/sq ft, $3,000 resale uplift → upfront $5,000.00/$12,000.00 (carpet by $7,000.00), gross $15,000.00/$12,000.00 (hardwood by $3,000.00), net $15,000.00/$9,000.00 (hardwood by $6,000.00), $600.00/$360.00 per year; 500 sq ft → upfront $2,500.00/$6,000.00, gross $7,500.00/$6,000.00, net $7,500.00/$3,000.00; carpet $8/sq ft → gross $24,000.00, net $24,000.00/$9,000.00; hardwood $8/sq ft → gross $8,000.00, net $15,000.00/$5,000.00; resale $0 → net $15,000.00/$12,000.00; break-even hardwood price $18.00/sq ft.Bright Side Kit. "Carpet vs Hardwood Flooring: 25-Year Cost Calculator." https://brightoolbox.com/carpet-vs-hardwood-flooring/ Accessed October 24, 2026.
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