Iron Energy Cost Calculator

Work out iron energy cost instantly with clear inputs, formula shown and shareable results.

About Iron Energy Cost Calculator

An iron's thermostat cycles the element, so a 2,400 W iron averages around 1,100 W in use. Forty-five minutes a week works out to about twelve pounds a year — small, but the peak draw is high enough to matter on a shared circuit.

Formula

Iron cost

effective kW = rating x duty cycle; annual = kW x hours per week x 52 x tariff

Worked example

With the default values below, Iron Energy Cost Calculator returns Annual running cost of $11.79. Change any input above and every figure here is recalculated in your browser.

Inputs used

Iron rating: 2,400 W
Ironing per week: 45 min
Duty cycle: 45 %
Electricity rate: 0.28

Results

Annual running cost: $11.79
Weekly energy: 0.81 kWh
Cost per session: $0.2268
Annual energy: 42.12 kWh

Step by step

1Values used
2Iron cost
3Annual running cost= 11.79
4Weekly energy= 0.81 kWh
5Cost per session= 0.2268
6Annual energy= 42.12 kWh

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Why does the duty cycle vary so much?

Steam settings and heavy fabrics keep the element on longer. A dry low setting on synthetics might only be 25% duty.

Does a steam generator use more?

More power while running but often less overall, because it irons faster and needs fewer passes over each garment.