Electricity Cost Calculator
Appliance running cost from wattage, usage hours and tariff.
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About this calculator
A 1.5-ton AC (~1500W) running 6 hours daily consumes ~270 units monthly — often ₹2,000–3,000 depending on state tariffs. Knowing per-appliance costs drives real savings: an old fridge can quietly burn more than your TV and fans combined.
Slab tariffs complicate marginal maths: adding a high-consumption appliance can push entire usage into pricier brackets.
Formula
kWh = watts × hours ÷ 1000; Cost = kWh × tariff
Frequently Asked Questions
Where do I find my tariff?
State discom websites publish slab cards (₹/unit by consumption band). Use your latest bill's marginal slab rate for accuracy.
Do inverter appliances really save?
Yes for variable loads — inverter ACs/fridges modulate compressor speed, typically saving 20–40% versus fixed-speed equivalents under partial load.