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UPS kVA Load Calculator

With our user-friendly UPS kVA calculator you can quickly identify your UPS requirements. Simply answer our straightforward questions based on load and characteristics and we’ll provide you with recommendations for your UPS capacity in kVA, ensuring optimal performance and protection for your critical infrastructure.

Whether you know your exact load or need help estimating it, our tool guides you through the process.

  • If you know your load details, enter them directly to get your required kVA and recommended UPS products.
  • If you’re unsure, just follow a few quick questions about your IT systems. We’ll calculate the load and suggest the right UPS solutions for you.
Progress

Do you know your load and load characteristics?

Is it Single Phase or Three Phase?

Is it IT or Non IT?

Single Phase
KW to kVA Conversion

KW to kVA Conversion Tool

Three Phase
KW to kVA Conversion

KW to kVA Conversion Tool

IT Equipment kVA
Equipment Typical VA Qty (Max 500) Total VA
Workstations - Qty Typical VA 200
Workstation With 15" Monitors - Qty Typical VA 300
Workstation With 17" Monitors - Qty Typical VA 300
Server - Qty Typical VA 400
Blade Server - Qty Typical VA 750
Network Hubs - Qty Typical VA 100
Storage Arrays Per Drive - Qty Typical VA 75

Contact Our Hardware Sales Team

From initial contact through installation, service, maintenance to disposal, KUP provides its customers with an unrivalled single source for complete power protection.

Call: 0800 731 3269

Email: [email protected]

Recommended UPS Products

Your KVA Value: kVA

Please note that this result is for indicative purposes only. If you would like us to email your recommendations to you please fill out the form below.

Or why not give us a call on 0800 731 3269 and chat directly to a member of our team.

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    Behind the Uninterruptible Power Supply Calculations

    Choosing the right UPS (Uninterruptible Power Supply) is critical.
    Whether you’re protecting servers, medical devices, or industrial systems—accurate sizing matters.
    An undersized UPS won’t protect your equipment.
    An oversized one leads to wasted energy and higher costs.

    Use our UPS Load Calculator to find the right solution quickly and easily.

    How we calculate UPS Load in kVA

    UPS systems are typically rated in kilovolt-amperes (kVA) because they need to account for both real and apparent power. Why? Because not all electrical loads use power efficiently—especially when motors, transformers, or other inductive components are involved. That’s where the power factor (PF) comes in.
    Here’s the simple formula:
    kW = kVA × Power Factor (PF)

    Real Power (kW)

    This is the actual power your equipment consumes to operate.
    You’ll usually find this figure listed by the manufacturer in kilowatts (kW).

    Power Factor (PF)

    Power factor measures how effectively power is used.

    • A PF of 1 means all power is used effectively. kW =kVA
    • A lower PF means some is wasted—often due to inductive or capacitive loads causing a leading or lagging power factor.

    Most industrial equipment has a PF around 0.8 lagging, but it varies depending on the device and type of equipment as it can also be a leading power factor.

    How to Calculate UPS Load in kVA

    The power factor measures how effectively your equipment uses electricity. A PF of 1 means kVA =KW .

    Take the Guesswork Out of UPS Sizing. With the Kohler UPS Load Calculator, you’ll instantly know your exact load requirements using your system’s volts, amps per phase, and power factor.

    Easily determine your UPS requirements with our simple and accurate UPS kVA Load Calculator.

    On hand and ready to support you

    Whether considering design concepts for a new facility or how to tackle an upgrade, our trusted experts are on hand to help you find an efficient, resilient system and service package that works for you.

    Get In Touch

    Or why not give us a call on 0800 731 3269 and chat directly to a member of our team.

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