Financial Calculators
Plan your finances with precision — mortgages, investments, debt payoff, and more.
Mortgage Calculator
Monthly payment, amortization schedule, and total interest over the life of your loan.
Compound Interest Calculator
Visualize how your money grows over time with compound interest and regular contributions.
Loan Payoff Calculator
See how extra payments slash your payoff date and total interest paid.
Retirement Savings Calculator
Project your 401(k) and IRA growth to see if you're on track for retirement.
Credit Card Payoff Calculator
Expose the minimum payment trap and find your fastest path to zero debt.
Net Worth Calculator
Add up your assets and liabilities to know exactly where you stand financially.
ROI Calculator
Calculate return on investment for any scenario with annualized return and more.
Break-Even Calculator
Find the exact sales volume where your business covers all costs and starts profiting.
Health Calculators
Evidence-based health metrics to help you understand your body and reach your goals.
BMI Calculator
Calculate your Body Mass Index with health category, ideal weight range, and context.
Calorie Calculator
Find your TDEE, BMR, and macro targets based on your personal stats and activity level.
Body Fat Calculator
Estimate body fat percentage using the Navy method and other validated formulas.
Due Date Calculator
Calculate your pregnancy due date and see your full trimester timeline.
Water Intake Calculator
Get your personalized daily hydration target based on weight, activity, and climate.
Business Calculators
Essential tools for pricing, tax, and financial analysis.
Profit Margin Calculator
Calculate gross, net, and operating profit margins. Work forward or backward from any number.
Markup Calculator
Convert between cost, markup percentage, and selling price instantly.
Sales Tax Calculator
Calculate sales tax by state or custom rate. Add to or reverse-calculate from a total.
Hourly to Salary Converter
Instantly convert between hourly, weekly, monthly, and annual pay rates.
Invoice Generator
Create professional invoices instantly. Print or save as PDF for free.
Utility Calculators
Handy everyday calculators for time, travel, and more.
Why Use CalcHub?
CalcHub provides accurate, fast, and completely free calculators for financial planning, health tracking, and business analysis. Every calculator is built on proven formulas used by finance professionals and medical experts.
Free Financial Calculators
Our mortgage calculator uses the standard amortization formula to give you exact monthly payments and a full amortization schedule. The compound interest calculator applies the standard A = P(1 + r/n)^(nt) formula to show how your investments grow over time.
Health Calculators Based on Science
Our BMI calculator uses the CDC-standard formula. The calorie calculator uses the Mifflin-St Jeor equation, the most accurate BMR formula for most adults. The body fat calculator uses the validated U.S. Navy circumference method.
No Sign-Up. No Ads Blocking Your Results.
All calculators work instantly in your browser. Your data stays on your device and is never collected or stored. Results are available immediately — no waiting, no registration.