Electricity Cost Calculator (kWh to ₹)
Estimate electricity cost from energy consumption (kWh) and tariff rate (₹/kWh). Useful for industrial, commercial and home use.
⚡ Quick Reference — Cost of Electricity in India
Common kWh amounts at typical Indian tariffs. Use the calculator below for your exact rate and slab.
| Energy used | @ ₹6/kWh | @ ₹8/kWh | @ ₹10/kWh |
|---|---|---|---|
| 1 kWh (1 unit) | ₹6 | ₹8 | ₹10 |
| 10 kWh | ₹60 | ₹80 | ₹100 |
| 50 kWh | ₹300 | ₹400 | ₹500 |
| 100 kWh | ₹600 | ₹800 | ₹1,000 |
| 500 kWh | ₹3,000 | ₹4,000 | ₹5,000 |
| 1,000 kWh | ₹6,000 | ₹8,000 | ₹10,000 |
Domestic slabs run ₹3–9/kWh; commercial & industrial typically ₹6–12/kWh. Bills also include fixed and demand charges — see notes below.
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📊 Cost Breakdown
How This Calculator Works
One unit of electricity = 1 kilowatt-hour (kWh) — the energy a 1000-watt appliance uses in one hour. Multiply units by your tariff to get the cost.
Example: A 7.5 kW motor running 8 hours/day consumes 60 kWh/day. At ₹8/kWh, that's ₹480/day or about ₹12,480/month (26 working days).
Typical Indian Tariffs (2026)
| Category | Range (₹/kWh) |
|---|---|
| Domestic (low slab) | ₹3 – ₹6 |
| Domestic (high slab) | ₹7 – ₹9 |
| Commercial | ₹8 – ₹11 |
| Industrial LT | ₹6 – ₹10 |
| Industrial HT | ₹6 – ₹9 |
Always check your latest bill for the applicable rate — varies by state.
Disclaimer
Educational estimate of energy charges only. For actual billing, verify with your utility provider — bills include fixed charges, demand charges, taxes and slab adjustments.
Electricity Cost Formula Explained
The basic electricity cost formula is straightforward: total energy used (in kWh) multiplied by the per-unit tariff (₹/kWh). The tricky part is figuring out total energy used — that depends on the load (in kW) and how long it runs (hours).
Worked Example — Home AC
Daily Energy = 1.5 × 8 = 12 kWh/day
Daily Cost = 12 × ₹7 = ₹84/day
Monthly Cost = 84 × 30 = ₹2,520/month
Worked Example — Factory Motor
Actual Power = 7.5 × 0.80 ÷ 0.90 = 6.67 kW
Monthly Energy = 6.67 × 8 × 26 = 1387 kWh
Monthly Cost = 1387 × ₹8 = ₹11,093/month
Frequently Asked Questions
Want to understand the underlying math? Read the Electricity Cost Formula guide →
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