Calculators

Converts shoe sizes between different measurement systems (US, UK, EU, CM).

Calculates the amount of fabric needed for quilt backing and batting, considering seam allowances and fabric width.

Estimates the probability of losing a sock during laundry based on the number of socks washed and the number of washes.

Calculates the correct belt size based on your waist measurement.

Calculates the estimated gas usage and cost for a car trip based on distance, fuel efficiency, and gas price.

Calculates the shipping weight based on package dimensions (volumetric weight), often used by carriers.

Converts a number of steps into an approximate distance in miles.

Calculate the number of diapers needed per month based on baby's age and diaper changes.

Calculates the listening time of an audiobook based on its length and playback speed.

Calculate the time duration between two given times. This calculator helps determine the difference between a start time and an end time, providing the duration in hours and minutes.