Toolstud.io free web tools & calculators
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.
How could you use these tools?
Data tools
Bandwidth convert
Mbps ⇆ KB/s, GB/day, TB/week ...
Data size calculator
Calculate 10 Mbps x 6.5 hours = ? GB
Cloud Storage Cost
Calculate storage cost for AWS, Google, Azure ...
Electrical power
Volt x Amp → Watt, kWh, Ah, Joule, calorie
Bash boilerplate
Deliberate practice according to Malcolm Gladwell
Color tools
RGB conversion
RGB ⇆ CMYK, HSV, XYZ ...
CMYK conversion
CMYK ⇆ RGB, HSV, XYZ ...
HTML Color list
List of named HTML colors
Pantone Color list
List of named Pantone colors
Websafe Color list
List of websafe colors
Photo tools
Aspect ratio
Image W x H → aspect ratio
Megapixel calculator
Image W x H → megapixels
Image filesizes
Image W x H → bytes
Megapixel Aspects
See megapixels in different aspect ratios
DPI calculator
Print W x H and dpi → megapixels
Composition calc
Focal length, subject distance, crop factor → image composition
Depth-of-Field
Aperture, focal length, subject distance, crop → depth-of-field
Light calculator (EV)
Aperture, shutter time, ISO → Exposure Value
Video tools
Frame rate convert
Framerate conversion with ffmpeg and sox
Video bitrate
Estimate video bitrate based on resolution, fps and bit depth
Common bitrates
List of common video bitrates (Prores, DV, DCP, MPEG...)
Video file size
Estimate video file size from resolution and duration
Screen size
Calculate screen size from diagional and aspect ratio
Audio file size
Estimate audio file size for (un)compressed audio
DCP file size
Calculate DCP audio and video filesizes
Music tools
Beats-per-minute
Convert BPM to beat, measure and song length
Tap your tempo
Tap to find the BPM of a song or a heartbeat
Web tools
HTML encoder
Encode text full of àççéñts
HTML char map
View all special HTML characters «»
Emoji char map
View all special Unicode characters 🥠
SEO Performance
Check your site on 10+ performance test sites
HTTPS config check
Is your site correctly configured for HTTPS?
Redirection check
Is your site redirection correctly configured?
Calculator tools
Speed converter
m/s ⇆ km/h, mph, mach
Acceleration calculator
Convert m/s² into in/s², g
Distance calculator
Speed x time → distance
Mortgage loan calculator
Calculate monthly payments for a mortgage loan
Fuel Cost calculator
How much $ does your car fuel cost per year?
Electric Car calculator
How much $ does your electric car use in kWh per year?
Gladwell's 10000 hours
Deliberate practice according to Malcolm Gladwell
About tools
How to use the tools
Show me how I can use these tools
History
What? Who? Why? How?
Contact
Remarks about this site? Let me know!
Development blog
Progress on the technical side
Terms & Conditions
Terms & conditions
Privacy Statement
Privacy statement (GDPR compliant)
Donations/wishlist
How to show your appreciation
