Power Backup & Electricity Calculators Suite
Planning an inverter for frequent power cuts? Wondering how long your 150Ah battery will last, or how much rooftop solar you need? Use our 10 specialized engineering tools below.
Inverter Size Calculator
Find the exact Inverter VA rating required for your home appliances
Battery Backup Time
Calculate exact backup hours & minutes based on battery Ah & running load
Battery Charging Time
Know charging hours & electricity bill units consumed per full charge
Solar Rooftop Calculator
Estimate Solar kW capacity, number of panels, and required roof area
Electricity Bill Calculator
Calculate daily/monthly kWh power consumption & estimated electricity bill
Generator Sizing & Fuel
Calculate generator kVA size, liters per hour diesel burn, and running cost
WiFi Router UPS
Find mini-UPS battery capacity & backup hours to prevent Zoom/Teams disconnects
Appliance Running Cost
Calculate hourly, daily & monthly rupee cost to run AC, Geyser, Motor & Heater
Battery Lifespan Estimator
Predict remaining battery health, replacement year, and degradation curve
Emergency Load Planner
Optimize essential vs non-essential appliances to stretch battery backup
Calibrated for Indian Grids
Formulas tailored for 230V 50Hz single-phase systems, power factor 0.8, and local DISCOM slab tariffs.
Zero Signup / 100% Free
No phone number, no email, no spam. Instant browser calculations that save on your device.
1-Tap WhatsApp Sharing
Share your power backup specs or load shedding emergency checklist directly with electricians or family.