Calculators and converters for people who make things
57 free tools for photo, video, music, data, color, physics, finance and the web. They run in your browser, with no login, no installation and no tracking.
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How people use these tools More examples
Carbon-14 has a half-life of 5730 years
There were 1714 people infected in the US on 15 March 2020, and over 100.000 14 days later.
Fill in 3 hours, 7 days/week and 52 weeks. You will find it would take you 9.2 years.
Fill in 20000 $, 4 years and the current interest rate, e.g. 1.9%. This gives a monthly payment of $433 (FRM).
From the blog All posts
I had to calculate the dimensions of a flat DCP (1920x1080) on a scope (aspect ratio 2.39) cinema screen, and this is a perfect task for the aspect fit calculator. Let’s...
When you have an image with a certain aspect ratio (width/height), and you want to show it on a screen with a different aspect ratio, you have 2 simple options: extend with...
The BPM (beats-per-minute) calculator was up for an update. The calculator is used to calculate the tempo and the duration of audio effects like delay and LFO. The calculator...
To calculate the estimated size of a Digital Cinema Package (DCP) for cinema projection, you need to consider the image size and movie length. The DCP size is primarily determined...
In the projection business, there is a unit for ‘how much light is coming from that screen, actually?’. This is called the foot-Lambert or fL. To calculate foot lamberts (fL)...
To estimate the video bitrate based on image resolution and framerate, you can use the following formula: Video Bitrate (bits per second) = Image Resolution (pixels) ×...
Who is this for?
Photographers estimating storage for a shoot. Video editors preparing files for delivery. Musicians working out song structure. Web developers debugging headers. Students learning unit conversions. If you need a quick, reliable answer without signing up for anything, these tools are for you.
About the author
Toolstud.io is built and maintained by Peter Forret, a Brussels-based developer and technologist. The first tools date from the early 2000s and the collection has grown steadily since. Use them freely (within reason), and if you have suggestions, get in touch.
