Calculate Your Electricity Bill — Any Appliance, Any Country
Find out exactly how much any appliance costs to run — AC, fan, cooler, or anything else
Use this electricity cost calculator to find out in seconds how much any home appliance, such as an AC, fan, cooler, water heater, fridge or washing machine, adds to your monthly electricity bill. Just select an appliance or enter its power rating, enter the daily usage hours and your local electricity rate, and the calculator instantly shows the daily, monthly and yearly cost in any currency.
Appliance & Usage Details
Pick an appliance below, or choose “Other / Custom” to enter your own.
Based on your usage & rate
Why this result?
Formula: Daily units (kWh) = Power (kW) × Hours/day. Daily cost = Daily units × Rate. Monthly = Daily cost × 30. Yearly = Daily cost × 365.
Not sure of your AC size? Calculate it here →
Open AC Tonnage Calculator
How This Electricity Cost Calculator Works
This electricity cost calculator is based on a simple formula. Power in watts is divided by 1000 to get kilowatts (kW), then multiplied by the daily usage hours to get daily units (kWh). Multiplying the daily units by your electricity rate gives the daily cost. Multiply that by 30 for a monthly estimate and by 365 for a yearly estimate, which is the same method an electricity board uses to calculate meter readings.
Why Track Your Appliance’s Electricity Cost
In Gulf countries, especially the UAE and Saudi Arabia, the AC is the biggest electricity consumer in the summer months, sometimes making up 60–70% of the total bill. With this electricity cost calculator you can estimate in advance how much a new AC, water heater or washing machine will add to your monthly costs before you buy it, so you can choose an energy-efficient appliance and avoid unnecessarily high bills. For more on consumption patterns and official rate structures, see the U.S. Energy Information Administration electricity resource.
Frequently Asked Questions
Does this calculator work for all countries?
Yes, this electricity cost calculator works for any country or currency. You just need your area’s electricity rate per unit (kWh), found on your local electricity bill.
Where do I find my electricity rate?
Check the rate per unit or tariff on your monthly electricity bill, or check slab rates on your electricity board’s official website (such as DEWA or SEWA in the UAE).
Table of Contents
Electricity Cost Formula
The cost of running any appliance depends on three things: its power in watts, the hours it runs, and your electricity rate per kWh. The electricity cost calculator above uses this electricity cost formula:
Daily cost = Daily units × Rate per kWh
Monthly cost = Daily cost × 30
Yearly cost = Daily cost × 365
Example 1: an AC rated at 1,800 W runs 8 hours a day and your rate is 0.30 per kWh (any currency). Daily units = 1,800 ÷ 1,000 × 8 = 14.4 kWh. Daily cost = 14.4 × 0.30 = 4.32. Monthly cost = 4.32 × 30 = 129.60. Yearly cost = 4.32 × 365 = 1,576.80.
Example 2: some nameplates show volts and amps, not watts. For a single-phase appliance, Watts = Volts × Amps × Power factor. With 230 V, 8 A and a power factor of 0.8, the power is 230 × 8 × 0.8 = 1,472 W, or 1.472 kW. Use the power factor printed on the nameplate if there is one.
Appliance Running Cost Table
This table uses the same appliance power values as the electricity cost calculator above. Every row uses 8 hours a day and a rate of 0.30 per kWh, so you can compare them side by side. Real use differs, so enter your own hours and rate in the calculator.
| Appliance | Power | kWh per day | Cost per day | Cost per month |
|---|---|---|---|---|
| Ceiling fan | 75 W | 0.60 | 0.18 | 5.40 |
| LED TV | 100 W | 0.80 | 0.24 | 7.20 |
| Refrigerator | 150 W | 1.20 | 0.36 | 10.80 |
| Air cooler | 180 W | 1.44 | 0.43 | 12.96 |
| Washing machine | 500 W | 4.00 | 1.20 | 36.00 |
| AC, 1 ton | 1200 W | 9.60 | 2.88 | 86.40 |
| AC, 1.5 ton | 1800 W | 14.40 | 4.32 | 129.60 |
| AC, 2 ton | 2400 W | 19.20 | 5.76 | 172.80 |
| Water heater | 2000 W | 16.00 | 4.80 | 144.00 |
Cost per month is the cost per day multiplied by 30. The values are rounded to two decimals.
More Electricity Cost Questions
How do I calculate kWh?
Multiply the power in kW by the hours used. Convert watts to kW by dividing by 1,000. Example: 1,800 W for 8 hours = 1.8 kW × 8 h = 14.4 kWh.
How much does a 1.5 ton AC cost to run?
The electricity cost calculator’s 1.5 ton AC preset is 1,800 W. At 8 hours a day and a rate of 0.30 per kWh, that is 4.32 per day and 129.60 per month. Your real cost depends on the input power on the AC nameplate, your rate and your hours.
Is AC cooling capacity in kW the same as electrical power?
No. Cooling capacity is the heat the AC removes. Electrical power is what it draws from the supply, and it is much lower. Always use the electrical input from the nameplate in this calculator. See the HVAC Unit Converter for the difference.
How do I convert watts to kW?
Divide the watts by 1,000. For example, 1,500 W = 1.5 kW. This electricity cost calculator also has a kW button, so you can enter the power in either unit.
More Free HVAC Tools
- AC Tonnage Calculator — find the right AC size for your room
- HVAC Unit Converter — BTU, Ton, kW, PSI, CFM & more
- Superheat & Subcooling Calculator — for refrigerant charging checks
- Motor, Belt, Pulley & Bearing Calculator
- AC Capacitor Calculator — test run capacitors and check MFD tolerance
- AC Duct Size Calculator — size round and rectangular ducts from your CFM
- HVAC Technician Interview Questions & Answers (Part 1) — real written-test prep for HVAC roles in the UAE
- About Learn HVAC Pro — 10 years of real Gulf-region HVAC field experience