Every month, the electricity bill arrives, and for most people, it is a confusing mess. You see high numbers, taxes, surcharges, and a final amount that seems impossible to predict. It feels like you have no control over the cost of your electricity.

Meet the Electricity Units Calculator your new, easy-to-use tool designed to put you in charge of your power consumption and estimate your monthly cost with simple steps.

This tool is more than just a simple calculator. It’s a powerful financial planner designed specifically for consumers across Pakistan. Whether you get your power from LESCO in Lahore, K-Electric in Karachi, or PESCO in Peshawar, this tool can help you understand your basic charges quickly.

(function(){ // get elements const prev = document.getElementById(‘eu_prev_01’); const cur = document.getElementById(‘eu_cur_01’); const prevDate = document.getElementById(‘eu_prev_date_01’); const curDate = document.getElementById(‘eu_cur_date_01’); const rate = document.getElementById(‘eu_rate_01’); const btnCalc = document.getElementById(‘eu_calc_01’); const btnSwap = document.getElementById(‘eu_swap_01’); const btnClear = document.getElementById(‘eu_clear_01’); const err = document.getElementById(‘eu_error_01’); const resultsWrap = document.getElementById(‘eu_results_01’); const unitsOut = document.getElementById(‘eu_units_01’); const periodOut = document.getElementById(‘eu_period_01’); const billCard = document.getElementById(‘eu_bill_card_01’); const billOut = document.getElementById(‘eu_bill_01’); function fmt(n){ return Number(n).toLocaleString(undefined, {maximumFractionDigits:2}); } function showError(msg){ err.textContent = msg; err.style.display = ‘block’; resultsWrap.style.display = ‘none’; } function clearError(){ err.style.display = ‘none’; err.textContent = ”; } function calculate(){ clearError(); // basic presence if(prev.value === ” || cur.value === ”){ showError(‘براہِ کرم دونوں ریڈنگز درج کریں۔’); return; } const prevVal = Number(prev.value); const curVal = Number(cur.value); if(!isFinite(prevVal) || !isFinite(curVal)){ showError(‘درج کردہ ریڈنگ نمبرز درست نہیں۔’); return; } if(curVal < prevVal){ showError('موجودہ ریڈنگ پچھلی سے کم نہیں ہو سکتی۔'); return; } const used = curVal – prevVal; unitsOut.textContent = fmt(used) + ' یونٹس'; // dates if(prevDate.value && curDate.value){ const pd = new Date(prevDate.value); const cd = new Date(curDate.value); if(cd < pd){ showError('موجودہ تاریخ، پچھلی تاریخ سے بعد میں ہونی چاہیے۔'); return; } const diffDays = Math.round((cd – pd) / (1000*60*60*24)); periodOut.textContent = pd.toLocaleDateString() + ' — ' + cd.toLocaleDateString() + ' (' + diffDays + ' دن)'; } else if(prevDate.value && !curDate.value){ const pd = new Date(prevDate.value); periodOut.textContent = pd.toLocaleDateString() + ' — ' + new Date().toLocaleDateString(); } else { periodOut.textContent = '—'; } // rate / bill if(rate.value !== '' && isFinite(Number(rate.value))){ const bill = used * Number(rate.value); billOut.textContent = 'Rs ' + fmt(bill); billCard.style.display = 'block'; } else { billCard.style.display = 'none'; } resultsWrap.style.display = 'block'; } btnCalc.addEventListener('click', calculate); btnSwap.addEventListener('click', function(){ // swap values const a = prev.value; prev.value = cur.value; cur.value = a; const da = prevDate.value; prevDate.value = curDate.value; curDate.value = da; clearError(); }); btnClear.addEventListener('click', function(){ prev.value = ''; cur.value = ''; prevDate.value = ''; curDate.value = ''; rate.value = ''; resultsWrap.style.display = 'none'; clearError(); }); // allow Enter to trigger calculate on inputs [prev, cur, rate, prevDate, curDate].forEach(function(el){ el.addEventListener('keydown', function(e){ if(e.key === 'Enter') calculate(); }); }); // prevent conflicts if multiple instances: expose nothing globally })();

Electricity Units Calculator Covers All of Pakistan’s Major Power Companies

The best part about your tool is its wide reach. It understands that Pakistan’s electricity network is managed by many different companies (called DISCOs), and it allows you to get an estimate regardless of your location.

Here is the list of companies this powerful calculator is built to help consumers with:

In Punjab, Islamabad & Surrounding Areas:

• LESCO (Lahore Electric Supply Company)
• FESCO (Faisalabad Electric Supply Company)
• GEPCO (Gujranwala Electric Power Company)
• MEPCO (Multan Electric Power Company)
• IESCO (Islamabad Electric Supply Company)

In Sindh:

• K-Electric (Karachi)
• HESCO (Hyderabad Electric Supply Company)
• SEPCO (Sukkur Electric Power Company)

In Khyber Pakhtunkhwa (KPK):

• PESCO (Peshawar Electric Supply Company)

In Balochistan:

• QESCO (Quetta Electric Supply Company)

If you live in any of these regions, your calculator is the perfect tool for getting a clear picture of your power usage.

The secret to this tool is it’s easier. It breaks down the complicated billing process into three easy inputs, allowing you to calculate the units consumed and the basic cost in seconds.

Electricity is measured in terms of energy consumed over time.

The standard unit for this measurement, which appears on your bill, is the Kilowatt-hour ($text{kWh}$).

• Definition: One Kilowatt-hour (or 1 Unit) is the energy consumed by a device with a power rating of 1,000 watts ($text{1 kW}$) running for one hour ($text{1 h}$).
• Device: This usage is continuously tracked and recorded by an Electricity Meter (or Watt-hour Meter) installed at your property.
• Formula: $text{Energy (kWh)} = text{Power (kW)} times text{Time (h)}$

Find Your Consumed Units (kWh)

To find out how many units you used this month, the calculator only needs two numbers from your meter:

• پچھلی میٹر ریڈنگ (Previous Meter Reading): This is the reading from the end of your last billing cycle. You can find this number on your previous month’s bill.
• موجودہ ریڈنگ (Current Reading): This is the number you read from your electricity meter today.

From the below image you can find the previous and latest reading number

The tool instantly subtracts the previous reading from the current reading.

$$text{Units Consumed} = text{Current Reading} – text{Previous Reading}$$

This simple calculation is the most important step! It tells you exactly how much electricity you consumed this month.

Enter Your Rate per Unit

• ریٹ فی یونٹ (Rate Per Unit) – (Optional): This is the simple average price you expect to pay for each unit.

Why is this rate important? While the official bill has complex tiered rates (where the price gets higher the more you use), your tool allows you to input a single, easy-to-manage average rate (like 29.5 in the example). This gives you a fast, good estimate of the basic energy cost.

Remember: The official bill will include additional taxes, surcharges, and FPA (Fuel Price Adjustment), which is why the tool correctly states: (This tool shows an estimated unit and bill. The actual bill includes taxes.)