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Electricity Bill Calculator

Calculate your monthly electricity bill and find ways to reduce it

Units Used
0
Energy Cost
₹0
Total Bill
₹0
Energy Charges₹0
Fixed/Meter Charge₹0
Total Monthly Bill₹0
Annual Cost₹0
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What is Electricity Bill Calculator?

Calculate your monthly electricity bill based on units consumed and state tariff slabs. Add appliances to estimate usage. India-specific financial calculators built for the Indian tax system, RBI guidelines, and Indian banking rates. TekPulse's Electricity Bill Calculator is completely free — no signup, no ads in results, and no data stored on our servers.

How to Use Electricity Bill Calculator Online

  1. Select your state to load the correct electricity tariff slab rates
  2. Enter your monthly electricity consumption in units (kWh) from your meter reading
  3. The calculator applies the state-specific slab rates and adds fixed charges and taxes
  4. View the detailed bill breakdown: energy charge, fixed charge, fuel surcharge, and taxes
  5. Compare units consumed month-by-month to identify high-usage periods

Electricity Bill Calculator Formula & Calculation

Energy Cost = Σ (Units in each slab × that slab's rate) | Total Bill = Energy Cost + Fixed Charge

Most Indian state electricity boards use a telescoping (tiered) tariff: the first block of units is billed at the lowest rate, the next block at a higher rate, and so on — only the units falling within each slab are charged at that slab's rate, not the entire consumption at the final slab's rate.

Example (Tamil Nadu-style slabs: 0–100 units free, 101–200 at ₹1.5/unit, 201–500 at ₹3/unit, above 500 at ₹5.75/unit, fixed charge ₹30): 350 units consumed → first 100 units = ₹0, next 100 units = ₹150, next 150 units = ₹450 → Energy cost = ₹600 → Total bill = ₹630.

Key Factors That Affect Your Result

  1. State tariff differences — Rates and slab boundaries vary significantly by state (e.g., Maharashtra, Karnataka, Delhi, UP, Gujarat each have different slabs and fixed charges) — always select your own state for an accurate estimate; rates also change periodically with tariff revisions.
  2. Telescoping vs flat-rate billing — Telescoping billing (used here) means crossing into a higher slab does not increase the rate on earlier units — a common misconception that leads people to overestimate their bill increase.
  3. Appliance-wise estimation — The appliance calculator estimates units as Watts × Hours × Days ÷ 1000; actual consumption can vary with appliance efficiency rating, voltage fluctuations, and standby power draw not captured here.

Why Use TekPulse Electricity Bill Calculator?

Runs Entirely in Your Browser
All math happens locally — nothing is sent to our servers
6 State Tariff Slabs
Built-in slab rates for Tamil Nadu, Maharashtra, Karnataka, Delhi, UP, and Gujarat, or enter your own custom rate
Appliance-wise Estimator
Add individual appliances with wattage and daily usage to estimate your units consumed
Indicative Slab Rates
Built-in state tariffs are reference figures, not live utility data — check your actual bill for exact slabs

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Related Guides

How to Calculate Your Electricity Bill in India (State-wise Slabs)

Frequently Asked Questions

Your bill = Energy charges (based on units consumed using slab rates) + Fixed/meter charge + Taxes/fuel adjustment charges. Units consumed (kWh) = Watts × Hours of use ÷ 1000.

Slab rates mean different units are charged at different rates. E.g., first 100 units at ₹3/unit, next 200 units at ₹5/unit, above 300 units at ₹7/unit. Higher consumption pushes you into higher slabs.

Units (kWh) = (Watts × Hours per day × Days per month) ÷ 1000. Example: 1500W AC running 8 hours/day for 20 days = (1500 × 8 × 20) / 1000 = 240 kWh.

Air conditioner (1–2 kW), water heater/geyser (2–3 kW), refrigerator (0.1–0.2 kW running average), washing machine (0.5–1 kW), iron (1–2 kW). AC and geyser are typically the biggest contributors to high bills.

Use 5-star rated appliances, set AC to 24°C instead of 18°C (saves ~6% per degree), switch off appliances at the plug, use LED bulbs, reduce geyser usage, and run washing machines with full loads.

Sanctioned load is the maximum power your connection is allowed to draw (in kW or kVA) — exceeding it may blow the meter fuse. Connected load is the sum of wattage of all appliances installed.

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