Calculators

Calculates the duration of pregnancy in weeks and days from the last menstrual period (LMP) or conception date.

Estimates the daily calorie reduction needed to lose a specific amount of weight over time.

This calculator helps determine the safe Benadryl dosage for cats based on their weight. It calculates the dosage in milligrams.

Estimates your Basal Metabolic Rate (BMR) and Daily Calorie Needs based on the Harris-Benedict equation. This calculator provides an estimated calorie intake for maintaining current weight, and can be adjusted based on activity level.

This calculator determines the optimal caffeine consumption based on your sleep deprivation, body weight, and caffeine tolerance. It provides personalized recommendations to maintain alertness.

Calculates the corrected age for premature babies, adjusting for their early birth.

This calculator helps assess the potential toxicity of onion consumption for dogs based on their weight and the amount of onion ingested.

Calculates the Revised Geneva Score to assess the pre-test probability of pulmonary embolism (PE). This score helps clinicians determine the likelihood of a PE based on clinical findings.

Assesses daytime sleepiness levels using a self-administered questionnaire.

Estimates a woman's risk of developing invasive breast cancer over the next 5 years and lifetime. This calculator uses the Gail Model, which considers factors such as age, race, personal history of breast biopsies, family history of breast cancer, and age at first menstrual period and childbirth.