Calculators

Converts a given date and time into Unix epoch time (seconds since January 1, 1970, 00:00:00 UTC). Also displays the current Unix time.

Estimates the carat weight of a diamond based on its shape and measurements.

Calculates the number of years between a BC (Before Christ) date and an AD (Anno Domini) date.

Calculates the Cubic Meter (CBM) volume of cargo for shipping purposes.

Calculates the total amount of fabric needed for a sewing or crafting project, considering dimensions and seam allowances.

Estimates the corn yield in bushels per acre based on a sample area and average ear count.

Calculates the hyperfocal distance, which is the distance at which a lens can be focused to achieve the greatest depth of field.

Calculates the difficulty of a Dungeons & Dragons 5e combat encounter based on party level and monster experience points (XP).

Calculates the range of distance in a photo that appears acceptably sharp, based on focal length, aperture, subject distance, and sensor size.

Converts latitude and longitude coordinates between various formats, including decimal degrees, degrees minutes seconds, and more.