Mobile & Devices Calculators
Compare device screen size, pixel density, aspect ratio, battery life, charging, storage and data-use estimates. Use the specifications and usage assumptions that match your phone, tablet or other device to explore capacity and performance. Actual battery and charging results vary with hardware, temperature, settings and usage.
Display & Screen
7 toolsScreen Size Calculator
Calculate display diagonal size from screen width and height.
PPI Calculator
Calculate pixels per inch from display resolution and screen size.
DPI Calculator
Calculate display or image pixel density in dots per inch.
Aspect Ratio Calculator
Find and simplify the aspect ratio of a screen or image.
Screen Resolution Calculator
Calculate resolution, pixel count and display dimensions.
Screen Area Calculator
Calculate the physical area of a device display.
Display Pixel Density Calculator
Calculate pixel density from resolution and display dimensions.
Battery & Power
7 toolsBattery Life Calculator
Estimate device operating time from battery capacity and power use.
Battery Runtime Calculator
Calculate expected runtime using battery energy and device load.
Battery Capacity Calculator
Convert battery voltage and capacity between mAh, Ah and Wh.
Charging Time Calculator
Estimate how long a device battery will take to charge.
Charging Cost Calculator
Estimate the electricity cost of charging a device.
Battery Health Calculator
Estimate remaining battery capacity compared with original capacity.
Device Power Consumption Calculator
Calculate electrical energy and power consumption for a device.
Data & Connectivity
4 toolsPhone Data Usage Calculator
Estimate monthly mobile data usage from everyday activities.
Internet Data Usage Calculator
Estimate data consumption from streaming, browsing and downloads.
Download Time Calculator
Calculate how long a file takes to download at a given speed.
Upload Time Calculator
Calculate how long a file takes to upload at a given speed.
Storage & Media
5 toolsStorage Calculator
Estimate how many files, photos or videos can fit in available storage.
Storage Conversion Calculator
Convert storage quantities between KB, MB, GB and TB.
Photo Storage Calculator
Estimate the number of photos that can fit on available storage.
Video Storage Calculator
Estimate video recording capacity from storage and video bitrate.
Power Bank Calculator
Estimate the power-bank capacity needed for a device.