Fast, accurate, and easy-to-use calculators for finance, health, business, and more
Top 12 calculators used by millions of people every month
Calculate your Body Mass Index and health status
Estimate monthly payments and total loan costs
Calculate loan payments and interest
See how your investments grow over time
Calculate tips and split bills easily
Calculate your exact age in years, months, days
Calculate your Grade Point Average
Calculate percentages, discounts, and increases
Calculate area of various shapes
Plan your retirement savings and goals
Estimate your income tax obligations
Calculate daily calorie needs for your goals
Brand new calculators added in March 2026
Calculate salary increase amount and new annual pay
NEWTotal Daily Energy Expenditure for your activity level
NEWCalculate sale prices, savings, and discount percentages
NEWSolve any speed, distance, or time problem instantly
NEWConvert hourly wage to annual salary and vice versa
Explore 78+ calculators organized by category
Manage your money with loan, mortgage, investment, and tax calculators
View all →Track your health with BMI, calorie, body fat, and fitness calculators
View all →Business tools for profit margin, ROI, break-even analysis, and more
View all →Mathematical and scientific calculators for area, volume, and statistics
View all →Plan your projects with paint, concrete, roofing, and flooring calculators
View all →Car-related calculators for loans, depreciation, fuel economy, and more
View all →Daily life calculators for sleep, water intake, reading time, and more
View all →Property investment tools for rental yield, cash flow, and value analysis
View all →Kitchen helpers for recipes, conversions, cooking times, and nutrition
View all →Essential utilities for electricity, solar, internet speed, and HVAC
View all →The best calculator platform trusted by millions
All 78+ calculators are completely free. No hidden fees, no subscriptions, no premium tiers.
Start calculating immediately. No sign-up, no login, no personal information required.
Perfect experience on any device - desktop, tablet, or smartphone. Responsive design.
Precise calculations using verified formulas and up-to-date data for 2026.
Your data stays on your device. We don't store, track, or sell your information.
Browse our complete collection organized by category
Everything you need to know about CalcHub's free online calculators
Yes — every one of the 78+ calculators is 100% free with no registration, no subscription, and no hidden fees. Access any tool instantly on any device.
CalcHub uses professionally vetted formulas from IRS standards, NIH guidelines, and established engineering principles. Results are reliable estimates — consult a licensed professional for high-stakes decisions.
Use the Mortgage Calculator when you know the home price and want monthly payments and amortization. Use the Affordability Calculator to work backwards from your income and find your maximum qualifying price.
Yes — all 78+ calculators are fully mobile-responsive. No app download needed. Just visit on your phone and start calculating.
CalcHub has 12 categories: Financial, Health & Fitness, Business, Construction, Automotive, Education, Cooking, Lifestyle, Real Estate, Gaming, Science & Math, and Utilities — covering 78+ specialized tools.
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