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Electricity Bill Calculator India 2026 – Monthly Power Cost
Use this free Electricity Bill Calculator in India to estimate your monthly power bill from units consumed — and identify which appliances are costing you the most.
Monthly electricity cost from units
Total Bill
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Energy Charges
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Fixed Charges
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Tax (16%)
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Total Bill
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❓ FAQs
How does this calculator work?▼
Enter the required values and click Calculate. Results appear instantly using standard financial formulas.
Is this free?▼
Yes, completely free. No login or signup required.
Are calculations accurate?▼
Yes, industry-standard formulas. For large decisions, consult a financial advisor.
📊 What is the Electricity Bill Calculator and How Does It Work?
Electricity bills are calculated by multiplying units consumed (kWh) by applicable slab rates, plus fixed charges, fuel adjustment charges, and taxes. Most Indian states use a slab system where higher consumption costs more per unit.
Formula
Bill = Σ(Units in each slab × slab rate) + Fixed charges + FAC + Taxes | 1 unit = 1 kWh = 1 appliance running at 1000W for 1 hour🪓 Step-by-Step: How to Use This Calculator
- Enter total units consumed this month (from meter reading)
- Enter your state unit rate per kWh
- Add fixed charges applicable to your connection
- Click Calculate to see bill breakdown and monthly cost
📌 Example Calculation
500 units at ₹5/unit average + ₹100 fixed charges + 8% taxes: Bill ≈ ₹2,908. AC running 8 hours/day for 30 days uses about 360 units alone.
✅ Benefits of Using This Calculator
- Verify electricity bill accuracy
- Identify which appliances consume most power
- Set monthly consumption targets to reduce bill
- Compare costs before buying new appliances
- Plan solar panel investment payback period
- Track consumption patterns over months
⚙️ Key Factors That Affect Results
- Total units consumed this month
- State-specific slab rates — vary widely across India
- Connection type — domestic vs commercial tariff
- Fixed demand charges based on connected load
- Fuel adjustment charges (varies each month)
- Applicable taxes and cess
❓ Frequently Asked Questions
How is electricity bill calculated?▼
Units consumed × unit rate + fixed charges + taxes. Most states use slabs — first 100 units cheaper than next 200 etc.
How many units does an AC use?▼
1.5-ton 3-star AC: ~1.5 units per hour. 5-star: ~1.2 units per hour. 8 hours per day for 30 days = 360 units for 3-star.
What uses most electricity at home?▼
AC (40–50%), water heater (15–20%), refrigerator (10–15%), washing machine (5–8%), lighting (5%).
How to reduce electricity bill?▼
Switch to 5-star or inverter AC, use LED lights, set AC at 24°C, optimise refrigerator temperature, fix leaky taps.
What is net metering for solar?▼
Excess solar electricity fed back to grid earns credits that reduce your bill. Payback period typically 5–7 years.