Calculators

Estimates your daily calorie needs for weight maintenance, loss, or gain based on your activity level, gender, age, height, weight, and goals.

Calculates the weight of the body minus fat (muscles, bones, organs, water).

Calculates the local sidereal time (LST) based on Greenwich Mean Sidereal Time (GMST) and the observer's longitude.

Calculates the number of days between two dates.

Calculates the cost per use and the estimated lifespan of a tube of toothpaste.

Calculates the number of face masks needed and estimates the total cost, based on usage frequency and mask price.

Estimates your monthly data usage based on your online activities.

Calculates the volume of filling needed for a bean bag, and estimates the number of bags of filling required.

Calculates the recommended weight of a weighted blanket based on your body weight.

Calculate your sock size based on your shoe size and gender.