💻 Computer & Tech Calculators
Download times, power supply sizing, screen PPI, storage units, RAID, subnets, video bitrates and battery life.
Aspect Ratio CalculatorFind the aspect ratio of any resolution (like 1920 × 1080 = 16:9) and calculate the missing width or height to resize images, video and screens without distortion.Battery Life CalculatorEstimate how long a battery or power bank will run a device from its capacity (mAh or Wh), voltage and the device's power draw, and how many phone charges a power bank gives.Data Storage ConverterConvert between bits, bytes, KB, MB, GB, TB and PB in both decimal (1000) and binary (1024) units, and see why a 1 TB drive shows up as 931 GB in Windows.Download Time CalculatorFind how long a download or upload takes from the file size (MB, GB, TB) and your internet speed in Mbps or Gbps, with real-world overhead. Great for game downloads and backups.PC Running CostWork out what your gaming PC or console costs to run from its power draw, hours of use and your electricity rate, including idle time. Per hour, month and year.PSU Wattage CalculatorEstimate your gaming PC's power draw from the CPU, graphics card, drives and fans, and get a recommended power supply size with headroom for GPU power spikes.RAID CalculatorWork out usable storage, fault tolerance and space efficiency for RAID 0, 1, 5, 6 and 10 from the number and size of drives. Shows what your NAS will really give you.Screen PPI CalculatorCalculate pixel density (PPI) from screen resolution and diagonal size, plus the screen's width, height, aspect ratio, dot pitch and the distance where pixels disappear.Subnet CalculatorEnter an IPv4 address and CIDR prefix (like 192.168.1.10/24) to get the subnet mask, network and broadcast addresses, usable host range, host count and wildcard mask.Video Bitrate CalculatorCalculate video file size from bitrate and length, or the bitrate needed to hit a target file size. Includes typical bitrates for 1080p, 1440p and 4K recording and streaming.