IT & Communication · Page 5
Estimate transfer time, data size and required speed using explicit bits, bytes and throughput assumptions.
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A tool can belong to several categories. All tools lists each calculator once.
Computing
Frame and Timecode Converter
IT & Communication · Design & Drawing · Time & PlanningConvert frame counts, elapsed seconds and timecode, or measure a start/end timecode span. Select exact fractional rates and an explicit drop-frame convention.
Open calculator ↗IPv4 Subnet Calculator
IT & Communication · Learning & EducationCalculate a CIDR network, mask, full address range, broadcast convention and host range from an IPv4 address and prefix or dotted subnet mask.
Open calculator ↗Video and Audio File Size Calculator
IT & Communication · Design & DrawingEstimate media file size from duration and average audio/video bitrates, or solve the video bitrate available under a file-size limit.
Open calculator ↗Number Base Converter
Learning & Education · IT & CommunicationConvert a signed integer between bases 2–36 using exact arithmetic. Compare binary, octal, decimal, hexadecimal and base-36 values with place-value steps.
Open calculator ↗Screen Size Calculator
IT & Communication · Design & DrawingEnter a screen diagonal and pixel resolution to calculate active width, height, aspect ratio, pixel density and pitch, with a dimensioned screen diagram.
Open calculator ↗Design
Aspect Ratio and Crop Size Calculator
Design & Drawing · IT & Communication · Learning & EducationCalculate a centered crop or a whole-image resize inside a target pixel box. Inspect retained area, edge trims, output dimensions and upscaling.
Open calculator ↗HEX RGB and HSL Color Converter
Design & Drawing · IT & CommunicationConvert opaque sRGB color codes between HEX, integer RGB and HSL. See unrounded channel values and the nearest 8-bit HEX representation.
Open calculator ↗Print Size and Image Resolution Calculator
Design & Drawing · IT & Communication · Learning & EducationConvert pixel dimensions, print dimensions and pixels per inch. Find physical print size, required whole pixels or effective image resolution.
Open calculator ↗Geometry
Mathematics
2×2 Matrix Calculator
Learning & Education · IT & Communication · Science & LabAdd, subtract or multiply two 2×2 matrices, or find the inverse of A. Enter each cell separately and follow row-by-column arithmetic in the result table.
Open calculator ↗Logarithm Calculator
Learning & Education · Science & Lab · IT & CommunicationCalculate a real logarithm in any valid base, or raise that base to an exponent. Compare natural, binary and decimal logarithms and inspect the inverse relationship.
Open calculator ↗Prime Factorization Calculator
Learning & Education · IT & CommunicationFactor a positive integer up to one trillion. See prime powers, primality, divisor count, the exact divisor sum and a sorted divisor table.
Open calculator ↗Physics
DC Wire Voltage Drop Calculator
Science & Lab · Construction & DIY · IT & CommunicationEstimate DC conductor voltage drop, load voltage and wire heating, or solve the conductor area for a chosen drop limit using an entered operating resistivity.
Open calculator ↗Battery Capacity and Runtime Calculator
Science & Lab · Shopping · IT & CommunicationConvert nominal battery charge and energy using battery voltage. Estimate constant-load runtime from usable capacity and conversion efficiency.
Open calculator ↗Decibel and Ratio Calculator
Learning & Education · High School · Science & Lab · IT & CommunicationConvert power or root-power amplitude ratios to decibels and back. Add independent source levels that share a reference, using logarithmic power addition.
Open calculator ↗Time
Unix Timestamp Converter
IT & Communication · Learning & Education · Time & PlanningConvert Unix seconds or milliseconds to an explicit UTC date/time, or convert a UTC Gregorian date/time to both timestamp forms.
Open calculator ↗Time Zone Date and Time Converter
IT & Communication · Learning & Education · Time & Planning · TravelConvert an entered local date/time between named time zones. Explicitly select how to handle repeated times and reject nonexistent clock-change times.
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