Calculators

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

This calculator helps determine if buying a 3D printer is more cost-effective than outsourcing 3D printing services, considering factors like printer cost, material costs, and outsourcing prices.

This calculator estimates the area in acres that can be worked in one hour based on the speed of the equipment and the width of the swath being worked.

Converts time between military time (24-hour clock) and standard time (12-hour clock).

This calculator allows you to add or subtract days, months, and years from a given date.

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

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

This calculator determines the optimal spacing for planting bulbs based on the bulb's diameter and the desired spacing factor.

Calculates equivalent focal lengths considering sensor size (crop factor) or helps choose lenses.

Determines the day of the week for any given date.