Home › Engineering Toolkit › Envelope Heat Loss
🔥 Envelope Heat Loss
Conductive heat loss/gain through a surface: Q = U·A·ΔT (or via R-value).
The Mixadù Envelope Heat Loss is a free online calculator that conductive heat loss/gain through a surface: Q = U·A·ΔT (or via R-value). It runs entirely in your browser — no sign-up, no uploads, and your inputs never leave your device. Supported units include FT2, M2.
- Instant results as you type
- Free — no login or sign-up
- Private: runs entirely in your browser
- Part of the 91-tool Engineering Toolkit
Frequently asked questions
Is the Envelope Heat Loss free?
Yes. The Envelope Heat Loss is completely free, with no login or sign-up.
Are my inputs uploaded anywhere?
No. The Envelope Heat Loss runs entirely in your browser; your inputs never leave your device.
Which units does the Envelope Heat Loss support?
It supports FT2, M2.
Does the Envelope Heat Loss work on mobile?
Yes. It is fully responsive and works on phones and tablets.