Home / Technology
⌘ Computing & Digital
Digital Systems, Screen & Tech Calculators
Convert binary and hexadecimal numbers, verify display aspect ratios, test password entropy, and estimate file download speeds.
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Download Time Calculator
How long a file takes to download at a given internet speed.
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Number Base Converter
Convert a decimal number to binary, octal, and hexadecimal.
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Aspect Ratio Calculator
Simplest aspect ratio and the matching height for a new width.
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Password Strength Calculator
Estimate password entropy from its length and character set.
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PX to REM Converter
Convert pixels to rem, em, points, and percent for CSS.
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Video File Size Calculator
Estimate file size from bitrate and duration.
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CIDR / Subnet Host Calculator
Subnet mask and usable host count for a CIDR prefix.
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RAID Capacity Calculator
Usable storage and fault tolerance for common RAID levels.