Energy Cost Calculator

Ever wonder what that space heater, TV, or window AC unit is really costing you? Energy Cost Calculator gives you a fast, no-nonsense way to find out — just enter a wattage, dial in how you use it, and see the real cost in seconds.

How it works

Type in a device's wattage (or pick one from the built-in list of common household devices), set how many hours a day it runs and for how many days, and enter your electricity rate. The app instantly calculates the energy used and what it costs — no spreadsheet required.

Features

• Quick entry, no guessing — type wattage directly, or choose from common devices like refrigerators, space heaters, and window AC units
• Multiple devices at once — running five of the same lightbulb? Toggle "Multiple" and specify the quantity in one step
• Flexible time entry — set hours per day and number of days independently, with one-tap shortcuts for a single day, a month, or a full year
• Your rate, saved — set your cost per kWh once; it's remembered for next time, tucked away in a quick-access panel so it's never in the way
• Build a device list — add each device you calculate to a running list, complete with a running total so you can see your full household energy picture at a glance
• Save your own devices — beyond the built-in presets, save your frequently-used devices for one-tap reuse later
• Smooth, tactile controls — scroll wheels with haptic feedback make entering numbers fast and satisfying, not fiddly

Whether you're budgeting for a new appliance, curious about your energy bill, or just want to know what's really running up the cost, Energy Cost Calculator makes it clear.