Blackout Math: Home Energy

Blackout Math — clarity when power is unstable

When electricity becomes unreliable, guessing is risky.

Blackout Math helps you make confident decisions about your home’s backup power — based on real scenarios, not ideal assumptions.

This is more than a calculator.

It’s a practical planning tool designed for real-world outages.

Know how long your home will really stay powered

Set your battery type, capacity, and voltage — and Blackout Math will:

• calculate usable energy in Wh and kWh
• account for safe depth of discharge (DoD)
• show realistic operating limits
• help avoid inefficient or harmful usage

No overestimation. Just realistic numbers.

Real consumption, real results

Add any appliances — lights, laptops, routers, refrigerators, boilers, or heaters.

The app instantly shows:

• actual energy consumption
• each device’s impact on total load
• how many hours your system can truly run

You’ll always know when power will run out.

Designed for speed and clarity

Clean layouts, instant calculations, intuitive controls, and light & dark themes — built for fast, stress-free planning.

Built for real outage scenarios

Perfect for:

• estimating backup power for apartments and houses
• choosing portable power stations
• analyzing energy load
• planning reliable home energy systems

Less guessing. More certainty. Smart energy planning.