Free India electricity tool
Electricity Bill Calculator India
Estimate monthly and annual power cost from your electricity use. Choose a current verified state tariff where available, or use your own rate anywhere in India.
Smart result
Your estimate will appear here
Official mode activates only when a current, verified tariff JSON is available.
Quick answer
This calculator estimates your monthly electricity bill from the units (kWh) you use. Pick your state to apply a verified official tariff where one is available, or type your own rate per unit. You get the bill, a yearly figure and a line-by-line breakdown, so you can see what to change before the next bill arrives.
How electricity bills are generally calculated
One unit means one kilowatt-hour (kWh): using a 1,000-watt appliance for one hour consumes roughly one unit. Many tariffs divide consumption into slabs, with a different rate applying to each range. Fixed charges, duties, taxes, fuel adjustments, meter charges, and local rules can then change the final bill.
How TechVodka calculates your electricity bill
Custom Rate mode multiplies your units by the rate you enter, then adds any optional fixed charge. Actual bills can differ because DISCOM rules and adjustments vary.
Real-world example
A home uses 250 units in a month, pays an illustrative flat ₹8 per unit and has a ₹100 fixed charge (Custom Rate mode).
- Units used
- 250 units
- Rate
- ₹8/unit
- Fixed charge
- ₹100
The bill would be about ₹2,100 a month, or ₹25,200 a year.
That is ₹2,000 for energy plus ₹100 fixed, an average of ₹8.40 per unit.
Illustrative rate only. Real state tariffs usually charge different rates for different slabs of units, so select your state where available.
Assumptions
- The units you enter cover the whole billing period shown.
- In Custom Rate mode every unit costs the same; slab pricing is applied only with a verified state tariff.
- Duties, taxes, meter rent and fuel or dynamic adjustments are excluded unless the verified tariff includes them.
What can change the result?
- Units used
- The biggest driver. Cooling, geysers and pumps can add many units in summer or winter.
- Tariff slabs
- Many states charge more per unit as use rises, so the last units often cost the most.
- Fixed charges
- Linked to sanctioned load or connection type; they stay even if you use fewer units.
- Billing period
- A two-month bill covers twice the units. The calculator also shows the monthly equivalent.
- Subsidies and adjustments
- State subsidies, fuel surcharges and duties can raise or lower the final amount.
What should I do next?
- Next: Find which appliances use most of your units →List your appliances to see where the units on this bill come from.
- See what solar size your bill may need →Turn your monthly units into a rooftop solar size estimate.
- Check what your AC adds to the bill →Air conditioning is often the largest summer load.
Frequently asked questions
What is one unit of electricity?+
One unit is one kilowatt-hour (kWh): a 1,000-watt appliance running for one hour, or a 100-watt appliance running for ten hours.
Where do I find my units on the bill?+
Look for units consumed, or subtract the previous meter reading from the present reading. Check whether the bill covers one month or two.
Why is my real bill different from this estimate?+
Bills can include slab rates, fixed charges, electricity duty, fuel or dynamic adjustments, meter rent and subsidies. Only charges supported by the selected tariff, or entered by you, are included.
Why can't I select my state's tariff?+
A state appears only when its current tariff has been verified from official sources. Until then, use Custom Rate with the average rate from your own bill.