Electricity Unit Converter
Watt × hours → units (kWh) and estimated monthly bill
Units / day
Total units
Est. Bill
1 unit = 1 kWh = 1000 W used for 1 hour. Actual bills include fixed charges, slabs & taxes.
Electricity Unit Converter — Complete Guide & Instructions
MakeCard Electricity Unit Converter turns appliance wattage and daily usage into kilowatt-hour units and a rupee bill estimate. List each appliance with its watts, hours per day, and quantity, set your tariff and billing days, and the tool totals daily units, period units, and estimated cost. It answers the question every household asks: which appliance is eating my electricity?
How to Use Electricity Unit Converter
- 1 Review the pre-filled appliances (fan, LED bulb, refrigerator, AC) or edit their watts, hours/day, and quantity.
- 2 Add your own rows with the appliance name, Watts, Hrs/day — press + Add or Enter.
- 3 Set Rate per unit (₹/kWh) and Days in period.
- 4 Read Units / day, Total units (kWh), and the estimated bill.
Key Features & Capabilities
- Per-appliance consumption — watts × hours × quantity converted to kWh.
- Editable rows with quantities for counting multiple fans or bulbs.
- Pre-loaded typical appliances to start from.
- Any billing period — set the number of days yourself.
- Daily units, total units, and estimated bill shown together.
Supported Formats & Specifications
| Parameter | Specification |
|---|---|
| Formula | Units = watts × hrs/day × qty × days ÷ 1000 (1 unit = 1 kWh) |
| Inputs | Appliance rows (name, watts, hrs/day, qty), rate ₹/kWh, days |
| Outputs | kWh/day, total kWh, estimated ₹ bill |
Practical Everyday Use Cases
- Finding which appliance pushes the household into a higher slab.
- Estimating the monthly cost of running an AC, heater, or fridge.
- Comparing consumption before buying a new appliance.
- Splitting a shared flat's bill by appliance usage.
Pro Tips for Best Results
- Check the appliance's nameplate for real watts — a 1.5-ton AC is roughly 1500 W, a ceiling fan about 75 W.
- Fridge compressors cycle on and off; counting full-day hours overestimates — 8–10 effective hours is more realistic.
- 1 unit = 1 kWh = 1000 W used for one hour — match your bill's rate per unit for an accurate estimate.
Common Problems & Solutions
Appliances rarely run at full rated watts continuously — reduce hours for cycling devices like fridges and ACs.
Every row must have a name, watts, and hours to add — use the + Add row and press Enter to queue it quickly.
Privacy & Security
100% Client-Side Execution
Your appliance list and tariff are processed in the browser — no usage data is transmitted or stored.
Frequently Asked Questions
Everything you need to know about using Electricity Unit Converter
Multiply watts by hours of use and divide by 1000 — a 100 W bulb on for 10 hours uses 1 unit (1 kWh). This tool does it for your whole appliance list.
A 1.5-ton AC draws roughly 1500 W, so six hours of daily use consumes about 9 units — the exact figure depends on star rating and thermostat settings.
One unit is one kilowatt-hour — the energy a 1000-watt appliance uses in one hour. Your bill multiplies total units by the tariff per unit.
No — it estimates energy consumption cost only. For a full bill with slabs, fixed charges, and duty, use the Electricity Bill Calculator.
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