Free tools

Simple calculators, no account and no ads. They run entirely in your browser — nothing you type is sent anywhere.

• Aspect ratio calculatorWorks out the height or width that keeps the aspect ratio and checks whether an image would be distorted.
• Video file size calculatorHow much a recording takes at a given bitrate, and what bitrate fits into a given space.
• Uptime and SLA calculatorHow much downtime an SLA allows per day, month and year, and what uptime you actually achieved.