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Tech & Screens Calculators
Free tech calculators: download time, file size and bitrate, aspect ratio, pixel density, screen size, data usage, binary and hex conversion.
Aspect Ratio CalculatorSimplify width × height to a ratio and resize without distortion.Bandwidth CalculatorInternet speed a household needs, or bandwidth for a website.Battery Life CalculatorHow long a battery lasts from its capacity and the load.Bitrate CalculatorThe bitrate that fits a video into a target file size.Data Usage CalculatorEstimate monthly data from streaming hours and other use.Download Time CalculatorHow long a file takes to download at your connection speed.eDPI CalculatorEffective DPI from mouse DPI and in-game sensitivity.File Size CalculatorSize of a video, audio or image file from bitrate or pixels.IP Subnet CalculatorNetwork, broadcast, host range and mask for an IPv4 subnet.LED Resistor CalculatorThe series resistor an LED needs, as a standard value.Number Base ConverterConvert between binary, octal, decimal and hexadecimal.Ohm’s Law CalculatorEnter any two of voltage, current, resistance and power.Password Entropy CalculatorBits of entropy and time to crack for a random password.Pixels to Inches CalculatorConvert pixel dimensions to inches or cm at any PPI.PPI CalculatorPixel density of a screen from its resolution and diagonal.RAID CalculatorUsable capacity and fault tolerance for RAID 0, 1, 5, 6 and 10.Screen Size CalculatorWidth, height and area of a screen from its diagonal.TV Viewing Distance CalculatorHow far to sit from a TV of a given size and resolution.Uptime CalculatorConvert an SLA percentage to allowed downtime, and back.