Tech Calculators: Screens, Downloads and Batteries
Calculators for gadgets and computers. Check how long a download will take, how sharp a screen is, how long a battery should last or how far to sit from a television.
Results are estimates, because real-world speeds and battery life depend on how a device is used.
Aspect Ratio CalculatorFind the aspect ratio of any size and work out a new width or height that keeps it.Screen DPI and PPI CalculatorWork out pixel density from a screen resolution and its size in inches.Download Time CalculatorEstimate how long a file takes to download or upload at a given connection speed.TV Size and Viewing Distance CalculatorFind the best viewing distance for a TV size and resolution, or the best TV size for the distance from your sofa.Battery Life CalculatorWork out how long a battery lasts for a given power draw, or what size of battery you need to run something for a set time.Power Bank Charge CalculatorFind out how many times a power bank will charge your phone or tablet, allowing for conversion losses, and how long it takes to recharge.Mobile Data Usage CalculatorEstimate your monthly data use from the hours you stream, browse, game and call, and see whether it fits your plan.RAID Capacity CalculatorWork out the usable space and the drive failures survived for RAID 0, 1, 5, 6 and 10 from the number and size of your drives.
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