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 convertMbps ⇆ 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 powerVolt x Amp → Watt, kWh, Ah, Joule, calorie
Bash boilerplateDeliberate practice according to Malcolm Gladwell
RGB conversionRGB ⇆ CMYK, HSV, XYZ ...
CMYK 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 ratioImage 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 calcFocal length, subject distance, crop factor → image composition
Depth-of-FieldAperture, focal length, subject distance, crop → depth-of-field
Light calculator (EV)Aperture, shutter time, ISO → Exposure Value
Frame rate convertFramerate conversion with ffmpeg and sox
Video bitrateEstimate video bitrate based on resolution, fps and bit depth
Common bitratesList of common video bitrates (Prores, DV, DCP, MPEG...)
Video file sizeEstimate video file size from resolution and duration
Screen sizeCalculate screen size from diagional and aspect ratio
Audio file sizeEstimate audio file size for (un)compressed audio
DCP file sizeCalculate 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 characters «»
Emoji char mapView all special Unicode characters 🥠
SEO PerformanceCheck your site on 10+ performance test sites
HTTPS config 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?
Electric Car calculatorHow much $ does your electric car use in kWh per year?
Gladwell's 10000 hoursDeliberate practice according to Malcolm Gladwell
How to use the toolsShow me how I can use these tools
HistoryWhat? 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