Electronics
Answer the everyday device questions in seconds: charging, blackouts, data, power bills, TVs and storage. Then buy, upgrade or sell with the real numbers in front of you.
Power and charging
Charge faster, last through outages and know what power costs.
Charging time
Phone, tablet, laptop or watch: time to 80% and to full.
Instant answerOpen toolPower bank
Real charges, refill time and whether you can fly with it.
Instant answerOpen toolBlackout backup
How long an inverter or UPS keeps the essentials on.
Instant answerOpen toolElectricity cost
What each appliance costs at your token price.
Instant answerOpen toolData, storage and screens
Make bundles last, free up space and pick the right screen.
Data bundle planner
How long your bundle lasts for streaming, music and calls.
Instant answerOpen toolStorage and copying
What really fits and how long a copy takes.
Instant answerOpen toolTV size and distance
The right TV for your room, or the right seat for your TV.
Instant answerOpen toolScreen sharpness
Pixels per inch, real size and aspect ratio.
Instant answerOpen toolWhat is it worth?
A fair resale range before you sell or trade in.
Trade-in top-up
What you still pay after the trade-in offer and charges.
Printable resultOpen toolNew or refurbished
Total cost of each over the same period, resale included.
Printable resultOpen toolRepair or replace
Cost per month of fixing it against buying again.
Printable resultOpen toolValue over time
How a device’s value falls under your assumptions.
Printable resultOpen toolUsed-device checklist
Check a second-hand phone or laptop before you pay.
Print or save as PDFOpen toolMore tools
Gaming Console Resale Value Calculator
Estimate what your PlayStation, Xbox, Nintendo or handheld is worth now from what you paid, its age and condition.
ElectronicsOpen toolHeadphones & Speaker Resale Value Calculator
Estimate what your headphones, earbuds, speaker or soundbar are worth now.
ElectronicsOpen toolLaptop Resale Value Calculator
Estimate what your MacBook, Windows or gaming laptop is worth now from what you paid, its age and condition.
ElectronicsOpen toolPhone Resale Value Calculator
Estimate what your iPhone, Android phone or tablet is worth now from what you paid, its age and condition.
ElectronicsOpen toolSmartwatch Resale Value Calculator
Estimate what your Apple Watch, Galaxy Watch, Garmin or other smartwatch is worth now.
ElectronicsOpen toolAppliance Electricity Cost Calculator
See what each appliance costs to run per day, month and year at your own KPLC token price, and what uses the most power.
ElectronicsOpen toolBlackout Backup Power Calculator
Work out how long an inverter or UPS battery keeps your Wi-Fi, lights and TV on in a blackout, and what size you need.
ElectronicsOpen toolDevice Charging Time Calculator
See how long a phone, tablet, laptop or watch takes to charge from its level now to 80% or full, with your charger.
ElectronicsOpen toolDevice Depreciation Scenario Calculator
Model straight-line or reducing-balance depreciation using your assumptions.
ElectronicsOpen toolGaming Console Resale Value Calculator
Estimate what your PlayStation, Xbox, Nintendo or handheld is worth now from what you paid, its age and condition.
ElectronicsOpen toolHeadphones & Speaker Resale Value Calculator
Estimate what your headphones, earbuds, speaker or soundbar are worth now.
ElectronicsOpen toolLaptop Resale Value Calculator
Estimate what your MacBook, Windows or gaming laptop is worth now from what you paid, its age and condition.
ElectronicsOpen toolMobile Data Bundle Planner
Check whether a data bundle will last, from your daily streaming, music and video calls, or find the bundle size you need.
ElectronicsOpen toolNew vs Refurbished Cost Calculator
Compare purchase, repair, running and resale costs over the same period.
ElectronicsOpen toolPhone Resale Value Calculator
Estimate what your iPhone, Android phone or tablet is worth now from what you paid, its age and condition.
ElectronicsOpen toolPower Bank Calculator
Find how many real charges a power bank gives your devices, how long it takes to refill, and whether you can take it on a flight.
ElectronicsOpen toolRepair or Replace Calculator
Compare repair and replacement costs over the useful life you expect.
ElectronicsOpen toolScreen PPI & Size Calculator
Work out pixels per inch, screen width and height, aspect ratio and the distance where pixels blend, for any phone, laptop, monitor or TV.
ElectronicsOpen toolSmartwatch Resale Value Calculator
Estimate what your Apple Watch, Galaxy Watch, Garmin or other smartwatch is worth now.
ElectronicsOpen toolStorage & Transfer Calculator
See why storage shows less than the box says, how many photos and videos fit, and how long copying takes.
ElectronicsOpen toolTrade-in and Upgrade Calculator
Work out the top-up for an upgrade using your trade-in offer and charges.
ElectronicsOpen toolTV Size & Viewing Distance Calculator
Find the right TV size for how far you sit, or the best seat distance for the TV you have, with a wall-width check.
ElectronicsOpen toolUsed Device Inspection Checklist
Check a used device, record issues and print your inspection notes.
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