Engineering Calculator

Refrigerator Power Consumption Calculator

Fridge calculation uses average duty-cycle watts, not full compressor nameplate watts.

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Fridge Duty-Cycle Estimate

Estimate refrigerator load using practical duty-cycle logic.

Live calculator

Fill what you know. If a value is unknown, keep the practical default and verify the nameplate later.

Refrigerator Type

Age of Refrigerator

Electricity Rate (â‚¹/kWh)

Monthly units = duty-cycle adjusted average watts Ã— 24 Ã— 30 Ã· 1000. Fridges do not draw full compressor watts continuously.

This is a preliminary planning estimate. For certified audits, use site measurement and nameplate readings.

Why are fridge watts lower than nameplate?

The compressor cycles on/off, so average duty-cycle watts are used.

When should I replace an old fridge?

Only when saving and payback are reasonable or the fridge is very old/inefficient.

Check gasket, coil cleaning, door opening habits and age. Old refrigerators may justify replacement when monthly saving and reliability both matter.

The result is a planning estimate. Use nameplate wattage, measured runtime and current tariff for professional-level accuracy.