🧮 Everyday Tools

Percentages, dates, BMI, calories & more

X% of Y, what percent X is of Y, and percentage increase/decrease.

Calculate your exact age in years, months and days from your birth date.

Days between two dates, plus add or subtract days from any date.

Calculate your Body Mass Index with metric or imperial units.

Daily calorie needs with the Mifflin-St Jeor equation and activity level.

Random integers in any range — single, bulk, or unique without repeats.