LEARNING & SCIENCE

Technology calculators

Browse planned technology calculators for storage, networks and cloud costs. Explore the digital measurements, quantities and pricing inputs required.

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My internet speed calculatorMy internet speed calculator: compare a measured result with the speed your plan promises, in megabits and megabytes, and time a file transfer.Bottleneck calculatorBottleneck calculator: compare the frame rate your processor and graphics card can each sustain to see which limits the pair and by how much.Subnet calculatorSubnet calculator: turn an IPv4 address and prefix into the network address, broadcast, subnet mask, wildcard and usable host range.FPS calculatorFPS calculator: turn a frame rate into frame time in milliseconds, compare it with your monitor's refresh rate and see whether frames are wasted.Aspect ratio calculatorAspect ratio calculator: simplify any pixel size to a whole-number ratio such as 16:9, then scale to a new width without distorting the image.Power supply calculator UKUK power supply calculator: add your processor, graphics card and other components, add headroom and get a suggested PSU size with the current at 230 V.Download time calculatorDownload time calculator: work out how long a file takes at your real throughput, with megabits, megabytes and binary units kept separate.RAID calculatorRAID calculator: work out usable capacity, parity overhead and fault tolerance for RAID 0, 1, 5, 6 and 10 from your disk count and size.FOV calculatorFOV calculator: convert a horizontal field of view into the vertical and diagonal angles for any aspect ratio, without adding the angles up.Epoch calculatorEpoch calculator: turn a Unix timestamp into a readable UTC date and time, see the same instant at any offset, and get the ISO 8601 form.Data calculatorData calculator: convert between bytes, kilobytes, megabytes and the binary KiB and MiB, and see why a 1 TB drive shows less in your file manager.Sensitivity calculatorSensitivity calculator: work out effective DPI and the mouse distance for a full 360 turn from your DPI, in-game sensitivity and yaw constant.PPI calculatorPPI calculator: turn a resolution and a diagonal into pixels per inch, dot pitch and the physical width and height of the panel in millimetres.Word calculatorWord calculator: count words, characters, sentences and paragraphs in pasted text, and estimate reading time at the speed you choose.CSS calculatorCSS units calculator: convert between pixels, rem, em, points and percentages at your own root font size, with every unit shown at once.Cron calculatorCron calculator: read a five-field cron expression and see the next three run times, with ranges, lists and steps explained field by field.Chmod calculatorChmod calculator: turn three permission digits into the octal mode, the rwx string and the exact chmod command, with read, write and execute explained.Power supply calculator USUS power supply calculator: add your processor, graphics card and other components, add headroom and get a suggested PSU size with the current at 120 V.

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Technology calculator inputs and methods

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