Calculators
Fifteen free tools for files, downloads, and data. Pick one to get a fast, accurate number. Each tool works as you type, with no signup.
Speed & Time
Download and upload times, bandwidth, and speed units.
Download Time CalculatorEstimate how long a download takesUpload Time CalculatorEstimate how long an upload takesBandwidth CalculatorSee how much data a speed moves over timeData Transfer CalculatorFind the speed needed to move data in timeInternet Speed ConverterConvert a speed across every unitDownload Speed ConverterConvert a download speed between units
Storage & Size
Convert storage units and byte sizes.
Video & File
File size, video size, bitrate, resolution, and aspect ratio.
File Size CalculatorEstimate the total size of many filesVideo File Size CalculatorEstimate a video size from its bitrateBitrate CalculatorFind the bitrate that fits a size limitResolution CalculatorGet pixels and megapixels from a resolutionAspect Ratio CalculatorFind the aspect ratio or scale a size