This website contains a bunch of web-based tools (you don't need to install anything, just run them here) that I have developed through the years.
Use them like you want (within reason) and if you really like them, let me know.
Bandwidth converterMbps ⇆ KB/s, GB/day, TB/week ...
Data size calculatorCalculate 10 Mbps x 6.5 hours = ? GB
Cloud Storage CostCalculate storage cost for AWS, Google, Azure ...
Electrical power calculatorVolt x Amp → Watt, kWh, Ah, Joule, calorie
Bash boilerplate generatorDeliberate practice according to Malcolm Gladwell
RGB color conversionRGB ⇆ CMYK, HSV, XYZ ...
CMYK color conversionCMYK ⇆ RGB, HSV, XYZ ...
HTML Color listList of named HTML colors
Pantone Color listList of named Pantone colors
Websafe Color listList of websafe colors
Aspect ratio calculatorImage W x H → aspect ratio
Megapixel calculatorImage W x H → megapixels
Image filesizesImage W x H → bytes
Megapixel AspectsSee megapixels in different aspect ratios
DPI calculatorPrint W x H and dpi → megapixels
Composition calculatorFocal length, subject distance, crop factor → image composition
Depth-of-Field calculatorAperture, focal length, subject distance, crop → depth-of-field
Light calculator (EV)Aperture, shutter time, ISO → Exposure Value
Frame rate converterFramerate conversion with ffmpeg and sox
Video bitrate calculatorEstimate video bitrate based on resolution, fps and bit depth
Common video bitratesList of common video bitrates (Prores, DV, DCP, MPEG...)
Video file size calculatorEstimate video file size from resolution and duration
Screen size calculatorCalculate screen size from diagional and aspect ratio
Audio file size calculatorEstimate audio file size for (un)compressed audio
DCP file size calculatorCalculate DCP audio and video filesizes
Beats-per-minuteConvert BPM to beat, measure and song length
Tap your tempoTap to find the BPM of a song or a heartbeat
HTML encoderEncode text full of àççéñts
HTML char mapView all special HTML/Unicode characters
Web Speed/SEO Performance ChecksCheck your site on 10+ performance test sites
HTTPS readiness checkIs your site correctly configured for HTTPS?
Speed converterm/s ⇆ km/h, mph, mach
Acceleration calculatorConvert m/s² into in/s², g
Distance calculatorSpeed x time → distance
Mortgage loan calculatorCalculate monthly payments for a mortgage loan
Fuel Cost calculatorHow much $ does your car fuel cost per year?
Gladwell's 10000 hour-ruleDeliberate practice according to Malcolm Gladwell
Examples of how to use the toolsShow me how I can use these tools
History & developmentWhat? Who? Why? How?
ContactRemarks about this site? Let me know!
Development blogProgress on the technical side
Terms & ConditionsTerms & conditions
Privacy StatementPrivacy statement (GDPR compliant)
Donations/wishlistHow to show your appreciation