Free laptop tools and calculators
Compare laptops, check screen sharpness, estimate battery life and charging time, and more. Everything runs in your browser.
Laptop comparison toolPick any two laptops we have reviewed and compare their scores, specs, ports, battery and price side by side.Screen PPI calculatorEnter a screen's resolution and diagonal size to get its pixel density (PPI), dot pitch, physical size and total pixels.Screen size calculatorTurn a diagonal size and aspect ratio into real width, height and area, and compare two laptop screens.Battery life calculatorEstimate how long a laptop battery lasts from its capacity in watt-hours and the power the laptop draws.Charging time calculatorEstimate how long a laptop takes to charge from its battery size in Wh and the charger's wattage.Laptop score calculatorEnter six part scores and a price to get a Laptop1 Score, scores for gaming, work and study, and a value score.Laptop bag fit checkerCheck whether a laptop fits a bag, backpack or sleeve by comparing its real dimensions with the compartment size.Storage calculatorSee how much space a 256 GB, 512 GB or 1 TB drive really shows, and how many photos, videos and games fit on it.File transfer time calculatorEstimate how long a file copy takes over USB 2, USB 3, Thunderbolt or a network link, limited by the drive's own speed.Refresh rate calculatorConvert refresh rate and frames per second to frame time in milliseconds, and see how many frames a screen can show.Electricity cost calculatorWork out how much electricity a laptop uses per day, month and year and what it costs at your price per kWh.Cost per year calculatorCompare laptops by what they really cost per year, month and day once lifespan and resale value are counted.RAM calculatorTick what you do on your laptop and get a rule-of-thumb memory recommendation: 8, 16, 24, 32 or 64 GB.