Why the line wins by so much
Almost the whole gap is electricity. At the defaults, a 3000-watt dryer running 45 minutes uses 2.25 kWh per load, and 260 loads a year turn that into 585 kWh. At $0.17 per kWh that is $99.45 of energy alone, before the machine itself is counted. Spread a $600 dryer over 12 years and you add $50.00 a year, landing at $149.45. The clothesline has no energy bill at all: a $40 kit spread over 10 years costs just $4.00 a year, so the line saves $145.45 a year. The gap grows with every extra load and every cent on the electricity rate — at 8 loads a week it reaches $205.12, and at $0.30 per kWh it reaches $221.50. The honest counterweight is time, priced below.
The time trade, priced honestly
Hanging laundry takes longer than tipping it into a dryer. At the defaults, dryer loads need about 5 minutes of hands-on time each — loading, unloading, folding — which is 21.7 hours over 260 loads. Line loads need about 10 minutes each — pegging out and taking in — which is 43.3 hours a year. The line therefore costs 21.7 extra hours a year, and $145.45 divided by 21.7 hours is $6.71 saved per extra hour. Whether that trade is worth it is personal: if your evenings are already full, $6.71 an hour may not tempt you; if you enjoy the routine, or you dry outdoors while doing something else anyway, the saving is close to free money. And the line has a side benefit no spreadsheet captures: sun and air are gentler on fabric than tumble heat, so clothes tend to last longer.
Output · formula · meaning
| Output | Formula | What it means |
| Loads per year | Loads per week × weeks per year | 5 × 52 = 260 loads at the defaults. |
| Dryer energy per load | 3000 W × 45 min ÷ 60 ÷ 1000 | 2.25 kWh per load at the defaults. |
| Dryer energy per year | 2.25 kWh × 260 loads × $0.17 | 585 kWh × $0.17 = $99.45 a year. |
| Dryer total | $99.45 + $600 ÷ 12 years | $99.45 + $50.00 = $149.45 a year. |
| Clothesline total | $0 energy + $40 ÷ 10 years | $4.00 a year at the defaults. |
| Yearly saving | Dryer total − clothesline total | $149.45 − $4.00 = $145.45 a year for the line. |
| Saved per extra hour | $145.45 ÷ 21.7 extra hours | $6.71 saved per extra hour hanging laundry. |
Who uses this
- The household cutting bills: dries 5 loads a week and wants the yearly number before giving up the dryer — $145.45 saved, at $6.71 per extra hour.
- The large family: runs 8 loads a week and learns the line is worth $205.12 a year to them, nearly double the default household's saving.
- The renter with a pricey tariff: pays $0.30 per kWh and discovers the dryer costs $225.50 a year, so even part-time line drying pays.
- The fabric-conscious dresser: weighs gentler sun-drying against tumble wear and uses the $6.71-an-hour figure to decide how much line drying is worth it.
Accuracy & limitations
This is a comparison model, not a meter reading. It assumes the dryer draws its full rated power for the whole cycle, which overstates energy for machines that cycle their heater on and off — real dryer energy is often lower, so treat $149.45 as a high-side estimate. It also assumes every load can go on the line, which is not true where sun, wind, or space are missing: flats without a balcony, rainy climates, and homes with homeowners-association rules against outdoor lines all cut the achievable saving. Line drying is also slower, so a household that needs a shirt dry in an hour still needs the dryer sometimes. Treat the result as the yearly value of line drying every load, then scale it by the share of loads you can realistically hang.
Cite this calculatorBright Side Kit. “Clothesline vs Dryer: Yearly Laundry Drying Cost Calculator.” brightoolbox.com, 2026.Bright Side Kit. "Clothesline vs Dryer: Yearly Laundry Drying Cost Calculator." https://brightoolbox.com/clothesline-vs-dryer/ Accessed October 24, 2026.
Embed this calculatorPaste this into any web page to embed the live calculator. The “Powered by Bright Side Kit” link below it must stay intact.