Verification note: Results are design aids, not stamped engineering or code approval. Always check the current project specification, adopted code, manufacturer data and latest edition of the cited standard before construction or procurement.

POWER & INFRASTRUCTURE

BTU / Power Calculator

Electrical current, circuits and heat rejection estimate.

This tool is ideal for MDF/IDF, AV racks and equipment-room planning. Use final manufacturer power data before issuing construction drawings.

Power and cooling estimate

Entered specification type

Specification value

Supply voltage (V)

Power factor (only needed to convert W ↔ VA)

Planning breaker / circuit rating (A)

Usable loading for planning (%)

Enter values and calculate.

Apparent power VA = V × A
For sinusoidal AC loads, real power W = VA × power factor
Heat estimate: BTU/h = W × 3.412141633
Circuit count here is a planning estimate only; local code and nameplate data control final design.

WORKED EXAMPLE

Example — equipment rack power and cooling

The same electrical load produces heat. This example shows the relationship between connected watts, current draw and heat in BTU/h.

Source details

AVIXA CTS-D Formula Sheet (2024) — heat-load formula reference.
1 W = 3.412 BTU/h conversion and standard electrical power relationships.