Calculates your BMI and places it in the WHO classification table (Underweight / Normal / Overweight / Obese). Supports metric (kg/cm) and imperial (lb/in) inputs. Shows BMI for all age groups.

Handles 3 percentage question types: What is X% of Y? X is what percent of Y? and What is the percentage change from X to Y? No formula memorization needed.

Enter the bill total, tip percentage, and number of people — get the tip amount, total bill, and per-person share instantly. Supports custom tip percentages for any service quality.

Enter original price and discount percentage to get the final sale price and dollar amount saved. Also works in reverse: enter original and sale price to find the discount percentage.

Calculates regular pay, overtime pay (1.5× rate for hours over 40/week), and total gross earnings. Supports both hourly and salaried employee overtime calculations per US FLSA standards.

Enter annual salary and work hours per week to get hourly, weekly, bi-weekly, and monthly rates. Adjusts for different work schedules (32, 40, 50 hours/week).

Computes total value and interest earned for any principal, interest rate, and compounding frequency (daily, monthly, quarterly, annual). Shows year-by-year growth table.

Enter a list of numbers and get mean (arithmetic average), median (middle value), mode (most frequent value), and range instantly. Handles any number of values.

Estimates your Total Daily Energy Expenditure (TDEE) using the Mifflin-St Jeor formula. Enter age, height, weight, sex, and activity level to get maintenance, deficit, and surplus calorie targets.

Converts letter grades to grade points, weights by credit hours, and computes cumulative GPA. Supports 4.0 and 4.33 scale systems. Add/remove courses dynamically.