Inverter Load Calculator

Calculate total load on your inverter and check if your inverter capacity is sufficient for all connected appliances.

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Formula

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Core Formula
Total Load=Appliance Wattages\text{Total Load} = \sum \text{Appliance Wattages}

How it works: Adds up the wattage of all devices you want to run on the inverter and compares it to the inverter VA capacity (accounting for power factor).

Worked Example

3 fans (75W each) + 5 lights (10W each) + 1 TV (100W) = 225 + 50 + 100 = 375W. With PF 0.8, need 375 ÷ 0.8 = 469 VA inverter minimum.

Frequently Asked Questions

What is the difference between VA and Watts?

VA (Volt-Amperes) is apparent power; Watts is real power. The ratio between them is the Power Factor. A 1000VA inverter at 0.8 PF can deliver 800W of real power.

What is a safe load percentage?

Do not load an inverter beyond 80% of its rated capacity for sustained use. Brief surges (like motor startup) can draw more temporarily.

What power factor should I use?

Most home inverters have a power factor of 0.7 to 0.8. Check your inverter specifications for the exact value.

How do I add this Inverter Load Calculator to my site?

Absolutely. Use the "Embed" option above to tailor the dimensions, color scheme, and styling to match your site. Copy the generated iframe snippet and drop it into your HTML, WordPress editor, or any CMS. There is no cost and no account required. See calculory.com/services/embed-calculators for a step-by-step walkthrough.

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