Calculator Tools

Percentage, BMI, mortgage, loan, and other calculators.

Calculate percentages, find what percent one number is of another, or compute values from percentages.

Calculate Body Mass Index (BMI) from height and weight, with health category classification.

Calculate exact age in years, months, and days from a birthdate, plus next birthday countdown.

Calculate tip amount, total bill, and per-person split based on bill amount and tip percentage.

Calculate compound interest growth with future value, total interest, and year-by-year breakdown.

Calculate monthly mortgage payments, total interest paid, and amortization summary.

Calculate monthly loan payments and total interest for any personal or auto loan.

Calculate weighted average grade from scores and their weights.

Calculate GPA from letter grades and credit hours using the standard 4.0 scale.

Calculate daily calorie needs based on age, gender, height, weight, and activity level.

Calculate pregnancy due date, current week, and trimester based on last menstrual period.

Calculate the difference between two dates in days, weeks, months, and years.

Convert time between different time zones worldwide.

Calculate sale price and amount saved after applying a discount percentage.

Evaluate mathematical expressions with support for trigonometry, logarithms, square roots, and more.

Calculate how long it takes to pay off debt and total interest paid based on balance, rate, and monthly payment.