toolstud.io

One of my oldest projects, toolstud.io is a collection of free web-based calculators, converters and other tools.

for webmasters/sysadmins/engineers

• bandwidth converter: convert from GB/month to mbps to MB/hour, for estimations of throughput, to compare network and hardware speeds
• megapixel calculator: estimate image size for TIF, BMP, JPG, PNG … , also show aspect ratio
• HTTPS config check: see if your HTTPS security is correctly configured
• HTTP redirection check: see if your redirection (i.e. http -> https, www.example.com -> example.com) is correctly configured

For musicians

• BPM (beats-per-minute) calculator: convert bpm to millisecs, for music effects (e.g. delay on 1/3 of a beat)
• Audio delay calculator
• Musical frequency calculator: musical notes ← → frequency (Hz)

For photographers/videographers

• aspect ratio calculator: pixel size to aspect ratio and how this fits into screens and page sizes
• video file-size calculator: estimate video file-size based on resolution, fps (frames-per-second) and codec compression.
• video frame-rate conversion calculator: get the correct ratios for conform and interpolate frame-rate conversion programs
• depth-of-field calculator for photographers: estimate depth of field based on aperture (f/1.8), focal length (85mm) and crop size and distance