Teracom Solutions free tools

Rack Size, Power & Heat Calculator

Pick the rack height for your equipment and work out its power, current, heat load and UPS size.

Rack Size, Power & Heat Calculator

Pick the rack height for your equipment and work out its power, current, heat load and UPS size.

Equipment height (rack units)

Add up the U of every server, switch, patch panel, recorder and UPS. 1U is 44.45 mm.

Total power of the equipment (W)

Spare space (%)

Supply voltage (V)

Results

Rack space with spare: 18U

Rack to buy: 18U

Power: 1.50 kW (6.5 A)

Heat to remove: 5,118 BTU/h

UPS for the rack: at least 2,083 VA

Every watt the equipment uses becomes heat: 1 W is 3.412 BTU/h. The UPS figure assumes a 0.9 power factor with 25% headroom. A single 10 A outlet supplies about 2,300 W.

Building a bigger job?Add these figures to a project, then add results from any of the other calculators. The project becomes one report you can save as a PDF and import again later to make changes.

Name this result (optional) Open project

How it works

Rack space is the equipment height plus the spare space, rounded up to the next rack sold. Power in kW is the watts divided by 1,000, and current is the watts divided by the supply voltage. Heat is 3.412 BTU/h for every watt. The UPS is the watts divided by a 0.9 power factor, with 25% headroom.

Need help designing a system? Talk to our team, or see all 41 free calculators.

Not sure what to enter, or what the result means? , our AI support assistant.

Free tools from Teracom Solutions

Worked it out? We can build it.

Teracom Solutions designs, supplies, installs and monitors CCTV, alarms, access control, intercoms, networks and AV for businesses. Send us your Rack Size, Power & Heat Calculator results and we will quote the job, free.

Get a free quote Shop the parts All free tools

DesignSite surveys, plans and cable schedules
SupplyTrade pricing on the brands we install
InstallInstalled and commissioned by our own team
MonitorMonitoring and support once it is running

Now you have the number

Shop the parts.

Prices are shown to everyone. Sign in for member pricing, or ask us and we will quote the lot.

Networking

Networking solutions that keep your business connected and productive -- lowering communication costs, enhancing efficiency and improving customer service.

UPS & Power Protection

Uninterruptible power systems and power filtration products, engineered for reliability in the Australian market.

Can't see what you need? Tell us the spec and we will source it.