Heat Loss
Calculate Heat Loss instantly with the exact formula and a worked example.
Heat Loss
Area, m²
ΔT, °C
U-value, W/(m²·K)
Heat loss
2,000W
More about: Heat Loss
What it calculates
The “Heat Loss” calculator computes Heat loss in W from 3 parameters: area, m², δt, °c, u-value, w/(m²·k).
Used in design, material estimation, and structural calculations.
Example calculation
With parameters Area, m² = 100, ΔT, °C = 40, U-value, W/(m²·K) = 0.5 the result is 2,000 W.
How to use
- Enter area, m², δt, °c and u-value, w/(m²·k) — each field above is adjustable with a slider.
- Heat loss (W) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Heat Loss calculated?
The Heat Loss calculator computes Heat loss (in W) from area, m², δt, °c, u-value, w/(m²·k). Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Heat Loss calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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