free web tools

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.

Data tools

Bandwidth converter
Convert bandwidth from Mbps to KB/s, GB/day, ...

Data size calculator
Calculate 10 Mbps x 6.5 hours = ? GB

Color tools

RGB color converter
Convert RGB colors ⇆ CMYK, HSV, XYZ, Grayscale...

CMYK color converter
Convert CMYK colors ⇆ RGB, HSV, XYZ, Grayscale...

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 calculator
Calculate & compare aspect ratio from image dimensions

Megapixel calculator
Calculate & compare megapixels from image dimensions

Composition calculator
Focal length, subject distance, crop factor => image composition

Depth-of-Field calculator
Aperture, focal length, subject distance, crop factor => depth-of-field

Video tools

Frame rate converter
Framerate conversion with ffmpeg and sox

Video size calculator
Estimate video size from resolution and duration

Web tools

HTML encoder
Encode text full of àççéñts

HTML char map
View all special HTML/Unicode characters

Finance tools

Mortgage loan calculator
Calculate monthly payments for a mortgage loan at X% interest and N years duration

Calculator tools

Speed converter
Convert m/s into km/h, mph, mach

About tools

History & development
What? Who? Why? How?

Remarks about this site? Let me know!

Terms & Conditions
Terms & conditions, privacy statement

My wishlist
How to show your appreciation

Development blog
Progress on the technical side