Appliance Electricity Cost Calculatorبجلی کے آلات کا خرچ

About the Appliance Electricity Cost Calculator

This calculator shows where your electricity bill comes from. List the appliances in your home with their wattage, quantity and daily running hours, and it works out how many units (kWh) each one uses per month, its share of the total, and its monthly cost at your own per-unit rate. The table is sorted so the biggest consumers appear first.

It is especially useful in Pakistani summers, when air conditioners, fans, water pumps and irons push bills up, and for anyone deciding whether to replace an old appliance, add a UPS or install solar panels. A starting list of common household appliances is included and every value can be edited. No tariff is assumed; you enter the rate you actually pay, and nothing is sent anywhere.

How is electricity consumption calculated?

Electricity companies in Pakistan charge for energy in units, where one unit is one kilowatt-hour (kWh): the energy used by a 1,000-watt appliance running for one hour. An appliance’s wattage, printed on its label or in its manual, is the rate at which it uses power.

Monthly units are calculated as: watts × quantity × hours per day × days ÷ 1,000. A 100-watt LED TV used 5 hours a day for 30 days uses 100 × 5 × 30 ÷ 1,000 = 15 units. Appliances with motors or compressors, such as refrigerators and air conditioners, do not draw full power all the time. They cycle on and off, and inverter models vary their power with the room temperature, so you should enter effective full-power hours rather than the hours they are switched on.

Your bill is not simply units × one fixed price. Tariffs are set by NEPRA and the government, with rates that depend on your consumer category and monthly units, plus taxes and fuel adjustments. The simplest way to get a realistic cost is your average per-unit cost: the total bill amount divided by units consumed, taken from a recent bill.

How to use the Appliance Electricity Cost Calculator

1. Find a recent electricity bill and divide the total amount payable by the units consumed. Enter that figure as your average per-unit cost.
2. Check Days per month (30 by default).
3. Edit the appliance list. For each row enter the watts from the label, the quantity and the effective hours per day. Remove rows you do not need with the × button.
4. Click Add appliance for anything missing, such as a geyser element, microwave or electric heater.
5. Read the total units and cost, then the table ranking each appliance by units, share and monthly cost.
6. Click Download CSV to keep the table, or Reset list to restore the starting appliances.

The starting wattages are rough typical values to get you going, not measurements of your appliances. Replace them with the figures on your own labels for a better estimate.

Key features and benefits

• Per-appliance breakdown. Monthly units, share of the total and cost for every appliance
• Sorted by consumption. The biggest users appear at the top, so you know where to save first
• Your own rate. Uses the average rupees per unit from your bill, including taxes and adjustments, rather than an assumed tariff
• Editable starting list. Common Pakistani household appliances pre-filled, all fully editable
• CSV export. Download the table to compare months or share with family
• Private. Runs in your browser; nothing is uploaded or stored

Practical examples

The starting list

With the pre-filled list — one inverter AC at 1,200 W for 8 hours, three fans at 80 W for 12 hours, a fridge, six LED bulbs, a TV, an iron, a water pump, a washing machine and a laptop with router — total use is about 523 units a month. The AC alone uses 288 units, about 55% of the total, while the three fans use 86 units.

Effect of reducing AC hours

Cutting the AC from 8 to 6 hours a day saves 1,200 × 2 × 30 ÷ 1,000 = 72 units a month. At an average cost of Rs 60 per unit (an illustrative figure — use your own), that is Rs 4,320 a month.

Old fan versus efficient fan

Replacing three 80 W fans with 40 W fans, each used 12 hours a day, saves 3 × 40 × 12 × 30 ÷ 1,000 = 43 units a month. Over a summer of five months that is about 216 units.

Finding your per-unit cost

A bill shows 450 units and a total payable amount of Rs 27,000. The average cost is 27,000 ÷ 450 = Rs 60 per unit. Enter 60 and every appliance’s monthly cost appears in rupees.

Common use cases

• Households find which appliance drives a high summer bill.
• Families planning purchases compare the running cost of inverter and non-inverter ACs or new fans.
• People considering solar estimate the monthly units they want to cover.
• UPS and inverter buyers add up the load they need during load shedding.
• Shops and small offices estimate how much lighting, fans and computers cost to run.

Accuracy, limitations and privacy

The arithmetic is exact, but the result is only as good as the wattage and hours you enter. Labels often show maximum power, while actual consumption depends on the appliance’s age, settings, voltage and how often a compressor runs. For air conditioners and fridges, effective hours are usually lower than switched-on hours.

The average per-unit cost already includes taxes and adjustments, so it reflects what you pay on average. Because tariffs depend on monthly units, the real cost of extra units near a slab boundary can be higher than the average. The tool does not include any official tariff and does not connect to your electricity company; everything runs in your browser.

• Tariff slabs, fixed charges and fuel adjustments are not modelled separately; your average rate approximates them.
• Wattages in the starting list are typical examples, not your appliances’ values.
• Seasonal changes mean one month’s estimate will not match every bill.

Tips and best practices

• Set inverter ACs to around 26 °C and clean their filters regularly; both reduce compressor running time.
• Check the units on your bill each month; staying below a slab limit can lower the average cost per unit.
• Use LED bulbs and efficient fans — they are cheap upgrades with quick savings.
• Run irons, washing machines and pumps outside peak hours if your connection has time-of-use pricing.
• Use this table as the starting point for sizing a UPS or a solar system.

Related tools and next steps

If you are thinking about solar, take your monthly units to the solar system size calculator. For backup during load shedding, add up your essential load and use the UPS backup time calculator. Understand your bill and find your company’s website in the electricity bill (DISCO) guide, and check late-payment charges with the late payment calculator.