17 free calculators for your finances, health, and everyday decisions
Fast, no-signup calculators — from mortgages and retirement planning to BMI and calorie needs — built with the real formulas lenders, planners, and clinicians use. New calculators added regularly.
Financial Calculators
Plan mortgages, loans, savings, and retirement with calculators built around the real formulas lenders and planners use.
Mortgage Calculator
Monthly payment, amortization schedule, taxes, insurance & PMI.
Compound Interest Calculator
Project savings or investment growth with recurring contributions.
401(k) Retirement Calculator
Project your 401(k) balance with employer match and salary growth.
Auto Loan Calculator
Monthly car payment with sales tax, down payment & trade-in.
Personal Loan Calculator
Monthly payment for an unsecured personal loan, including fees.
Student Loan Calculator
Standard-repayment monthly payment and amortization schedule.
Debt Payoff Calculator
Avalanche vs. snowball payoff plans across multiple debts.
Rent vs. Buy Calculator
Compare total cost of renting vs. buying over time.
Paycheck Calculator
Estimate take-home pay after federal tax and FICA.
Refinance Calculator
Monthly savings, interest saved & breakeven on a refinance.
Health & Fitness Calculators
Everyday health and fitness math — BMI, calories, body composition, and pregnancy timelines — using standard, well-established formulas.
BMI Calculator
Body Mass Index and weight category, imperial or metric.
BMR & TDEE Calculator
Daily calorie needs based on BMR and activity level.
Body Fat Percentage Calculator
Estimate body fat % from simple body measurements.
Macro Calculator
Daily protein, carb & fat targets based on your TDEE and goal.
Pregnancy Due Date Calculator
Estimate your due date from your last menstrual period.
Education Calculators
Grade and GPA math for students — weighted assignment averages, cumulative GPA across semesters, and how much you need on what's left to hit your goal.