Estimate your monthly electricity bill based on appliance usage and your per-unit rate. Track daily, monthly and yearly costs.
Per-Unit Rate Slider (₹1–₹20)
Adjust your electricity tariff instantly using the number input or range slider. The label updates automatically to reflect ₹/kWh.
Days Per Month Slider (1–31)
Set billing cycle days with a smooth slider or manual entry. Perfect for irregular monthly readings.
Add Custom Appliance with Icon Picker
Choose from 15+ emoji icons (🔌💡❄️📺) and name your own appliance like Water Heater or Gaming PC.
Watts & Hours Per Day Inputs
Each appliance card has dedicated fields for wattage and daily usage hours (0–24, step 0.5).
Real-Time Monthly Cost Badge
Every appliance shows its individual monthly cost (₹/mo) that updates as you change values.
Breakdown by Appliance (Highest to Lowest)
See which device costs the most with percentage breakdown sorted descending.
Daily, Monthly & Yearly Results
Three result boxes display daily cost, total monthly units (kWh), and estimated yearly bill.
Reset Button
Clears all custom appliances and input values with one click while keeping default appliances.
An Electricity Bill Calculator helps you estimate your monthly electric cost based on actual appliance usage. Simply enter your per-unit rate (₹/kWh) and days per month, then add appliances with their wattage and daily hours. This gadget immediately calculates your projected monthly cost, daily expense, and annual electricity bill. All data remains on your device, with no external servers.
Enter your per-unit rate in ₹/kWh using the number field or drag the slider from ₹1 to ₹20. The label confirms your selection.
Adjust the days per month (default 30) using the slider or manual input. This affects monthly and yearly calculations.
Click the "+ Add Appliance" button, pick an emoji icon, name your device, enter watts and daily hours, then confirm.
For each appliance card, type the watts (power consumption) and hours per day used. Changes trigger automatic calculation.
The Estimated Monthly Bill displays in large text, along with daily cost, monthly units, yearly cost, and a percentage breakdown of each appliance.
Per-Unit Rate Slider (₹1–₹20)
Adjust your electricity tariff instantly using the number input or range slider. The label updates automatically to reflect ₹/kWh.
Days Per Month Slider (1–31)
Set billing cycle days with a smooth slider or manual entry. Perfect for irregular monthly readings.
Add Custom Appliance with Icon Picker
Choose from 15+ emoji icons (🔌💡❄️📺) and name your own appliance like Water Heater or Gaming PC.
Watts & Hours Per Day Inputs
Each appliance card has dedicated fields for wattage and daily usage hours (0–24, step 0.5).
Real-Time Monthly Cost Badge
Every appliance shows its individual monthly cost (₹/mo) that updates as you change values.
Breakdown by Appliance (Highest to Lowest)
See which device costs the most with percentage breakdown sorted descending.
Daily, Monthly & Yearly Results
Three result boxes display daily cost, total monthly units (kWh), and estimated yearly bill.
Reset Button
Clears all custom appliances and input values with one click while keeping default appliances.
Check your physical electricity bill to find the exact per-unit rate — it’s usually listed as “energy charges” in ₹/kWh.
For appliances that run intermittently (refrigerator, water heater), estimate average daily hours realistically, not maximum.
Use the hours per day field with 0.5 increments (e.g., 1.5 hours for a microwave) for more accurate monthly electric cost.
The highest-to-lowest breakdown assists in selecting which equipment to replace or utilize less often.
Click Reset anytime to remove all custom appliances and clear inputs without refreshing the page.
🔌 100% Client-Side – No data sent to any server. Your electricity usage stays private.
📊 Visual Breakdown – See exactly which appliance contributes the most to your bill with percentage values.
📱 Fully Responsive – Works on mobile, tablet, and desktop with touch-friendly sliders and buttons.
⚡ Real-Time Updates – Every input change recalculates your monthly electric cost instantly.
🎨 Custom Appliances – Add unlimited devices with custom names and emoji icons, removable anytime.
The result panel reveals four key numbers from your Electricity Bill Calculator: the big monthly bill figure, a daily cost estimate, total units consumed per month in kWh, and the projected yearly power expense. Each device is listed from highest to lowest monthly cost, along with the rupee value and percentage of your overall bill, in the dynamic breakdown that follows. This helps you identify energy hogs instantly — no spreadsheet needed.
It’s a tool that estimates your monthly electric cost by multiplying appliance wattage × daily hours × per-unit rate × days per month.
Convert watts to kW by dividing by 1000, multiply by daily hours, then by per-unit rate, then by days per month.
Yes, click the “+ Add Appliance” button, choose any emoji icon, name your device, and enter its watts and hours.
Absolutely. Just enter your per-unit rate — residential or commercial — and the calculation remains accurate.
Accuracy depends on correct watts and daily hours. Check appliance labels for exact wattage and track actual usage time.
Watts measure instant power. kWh (kilowatt-hour) measures energy used over time — 1000 watts for 1 hour = 1 kWh.
Default appliances (Light Bulb, AC, Fan, etc.) cannot be removed, but you can leave their watts and hours at zero to exclude them.
Check your latest electricity bill — look for “energy charge” or “per unit cost” listed in ₹/kWh.
It shows how much each appliance contributes to your total monthly electric cost — higher percentage means bigger impact.
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