Smart-Home & Consumer-Tech Calculators
Free, practical calculators for setting up a connected home — smart-home running costs, Wi-Fi mesh coverage, TV sizing, storage, internet speed, and battery life. Educational tools for planning your gadgets and network, not professional or financial advice.
Smart-Home Power Cost Calculator
Turn a device's wattage, daily hours, and your electricity rate into the daily, monthly, and annual cost of keeping it on — and add up the standby load of the whole house
Wi-Fi Coverage & Mesh Node Calculator
Enter your home's size, floors, and construction to see how many mesh nodes or access points it takes to cover every room with a solid signal, and whether one router is enough
TV Size & Viewing Distance Calculator
Match a TV to your room both ways — a screen size for the ideal seating distance, or a seating distance for the screen size that fills your view, tuned for 4K or 1080p
Data Storage Needs Calculator
Add up photos, video, music, apps, and documents for a total in GB and TB, plus the drive, phone, or NAS size to buy with sensible headroom so you don't run out in a year
Internet Speed Needs Calculator
Count your simultaneous 4K and HD streams, video calls, gamers, and smart devices to get a recommended download speed and plan tier — instead of overpaying for gigabit
Battery Life Estimator
Enter a battery's capacity in mAh, the device's current draw, and an efficiency factor to see runtime in hours and minutes, plus the energy it stores in watt-hours