Calculators

Calculates the time difference between two dates, providing results in days, weeks, and years.

Generates numeric or symbolic Linux file permission codes based on user/group/other read/write/execute settings.

Calculates the speedometer gear teeth needed for a given tire size, rear gear ratio, and speedometer gear teeth.

Converts between mesh size and microns, commonly used in particle size analysis and sieving.

Converts between CIDR notation, subnet masks, and IP address ranges for network planning.

This calculator helps determine the appropriate cage size for rabbits based on their weight and activity level.

This calculator determines what type of cat personality you would have based on your preferences and lifestyle.

Calculates accumulated growing degree units (GDUs), which are used to estimate crop development rates based on temperature data.

Estimates the time required to transfer a certain amount of data over a connection with a specific bandwidth.

Calculates pixel density (PPI) of a display or the required resolution for printing.