💻 Technology & Internet Calculators
Data, bandwidth, devices, media and network planning.
Download Time CalculatorEstimate download duration from file size and internet speed.Bandwidth CalculatorEstimate required bandwidth from users and average bandwidth per user.Upload Time CalculatorEstimate upload duration from file size and upload speed.Screen Resolution CalculatorCalculate total pixels and megapixels from screen width and height in pixels.Aspect Ratio CalculatorSimplify a screen or image aspect ratio from width and height.Pixel Density CalculatorCalculate pixels per inch (PPI) from screen resolution and diagonal size.Storage Needs CalculatorEstimate storage needed from number of files, average file size and overhead.Video File Size CalculatorEstimate video file size from duration and average bitrate.Image File Size CalculatorEstimate uncompressed image size from pixels, color channels and bits per channel.Database Size CalculatorEstimate database storage from record count, average bytes per record and overhead.API Rate Limit CalculatorEstimate how long a number of requests takes under a requests-per-minute limit.Uptime CalculatorCalculate uptime percentage from a measurement period and total downtime.Website Load Time CalculatorEstimate an ideal network transfer time from page size, bandwidth and latency.Password Entropy CalculatorEstimate password entropy from password length and character set size.IPv4 Subnet CalculatorCalculate IPv4 address count and usable hosts from a CIDR prefix length.Base64 Size CalculatorEstimate Base64-encoded size from original byte size.Mobile Data Cost CalculatorCalculate data cost from gigabytes used and price per gigabyte.Battery Life CalculatorEstimate battery runtime from capacity, average current draw and efficiency.Monitor Size CalculatorCalculate monitor diagonal size in inches from visible width and height in centimetres.Bitrate CalculatorCalculate average bitrate from file size and media duration.
Free technology & internet calculators
Choose a calculator above, enter your values and receive an instant result. Each tool works on mobile, tablet and desktop without registration.