Free Gadget & Tech Tools
Practical, no-signup calculators and checkers to help you buy and set up tech — from power banks to TVs to your homelab.
Earbuds Finder Quiz NEW
ANC, battery, workouts, sound & budget → your perfect wireless earbuds.
Gadget Gift Finder NEW
Who it's for + their interest + budget → the perfect tech gift.
Mesh WiFi Finder Quiz NEW
Match your home size, devices, speed & budget to the right mesh system.
Power Bank Finder Quiz NEW
Answer 4 quick questions → your perfect portable charger, matched on devices, flying, size & budget.
Power Bank Calculator
mAh↔Wh, how many phone charges, and the airline 100Wh limit — is your power bank flight-legal?
TV Size & Distance
Ideal TV/monitor size for how far you sit (and best distance for a screen you have) — 1080p/4K/8K.
Download Time
How long to download a file at your speed — presets for movies, games & more (Mbps).
Storage Calculator
How many photos, songs & hours of 1080p/4K video fit on any drive or SD card.
Will It Transcode?
Check if your CPU can hardware-transcode 4K HEVC / HDR for Plex & Jellyfin, and how many streams.
Power & Cost Calculator
Add your gear → monthly & yearly electricity cost of running your homelab 24/7.
NAS / RAID Calculator
Usable capacity, fault tolerance & efficiency for RAID 0/1/5/6/10 and ZFS RAIDZ.
Self-Host vs Cloud
Break-even & multi-year savings of self-hosting (hardware + power) vs paying for the cloud.
Crontab Generator & Explainer
Build a cron schedule from dropdowns, or paste any expression to decode it in plain English with next run times.