Microwave Oven Electricity Cost Calculator
See how many units your microwave uses and what it costs per use, day and month — using the real input wattage.
📊 Your Microwave Running Cost
How This Calculator Works
A microwave draws steady input power while running, so consumption is its input wattage times the minutes used. Convection mode adds a heating element, so it uses the most.
Always use the input wattage (on the label), not the cooking-power figure.
💰 Related Calculators
How Microwave Electricity Use Is Calculated
A microwave's cooking rating (e.g. 800 W) is the power delivered to the food. The magnetron that creates the microwaves is only about 60% efficient, so the oven pulls more from the socket — that input wattage is what your meter measures and what you should use for cost.
Worked Example — solo microwave, 20 min/day
Units/day = 1.2 × (20 ÷ 60) = 0.4 units
Cost/month = 0.4 × 30 × ₹8 = ₹96/month
Microwave Running Cost Reference
At 20 minutes/day, 30 days, ₹8/unit (input wattage).
| Type | Input Power | Units/Month | Cost/Month |
|---|---|---|---|
| Solo | 1200 W | 12.0 | ₹96 |
| Grill | 1400 W | 14.0 | ₹112 |
| Convection | 2100 W | 21.0 | ₹168 |
* Approximate. Convection baking for longer raises this. Use the calculator above.
Frequently Asked Questions
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