Free Tech Tools and Calculators
Explore our free tech tools and calculators, built to help you make smarter, faster decisions about phone charging and accessories — no signup needed, no guesswork required. Every free tech tool and calculator below gives you a clear, accurate answer in seconds.
Is My Charger Fast Enough for My Phone?
Check your charger and cable against 90+ phone models to see if you're getting full fast-charging speed.
Try it →Charging Time Calculator
Estimate exactly how long your phone will take to charge to 80% and 100%, based on your real charger and cable.
Try it →Power Bank Charging Calculator
See exactly how many times your power bank can charge your phone, accounting for real-world efficiency loss.
Try it →Power Bank on a Plane Checker
Check if your power bank is allowed in hand luggage and see its watt-hours.
Try it →Why Use Free Tech Tools and Calculators Instead of Guessing?
Generic advice about chargers, charging speed, and power banks rarely accounts for your specific phone, cable, and charger combination. These free tech tools and calculators replace guesswork with a direct, personalized answer based on real specifications. For the technical background on how chargers and phones negotiate power, see the USB Power Delivery overview from the USB Implementers Forum (USB-IF).
Every tool on this page is completely free to use and designed to give you a clear, accurate answer in seconds — more free tools and calculators will be added here as they launch.