Free Online Calculators for Health, Finance & Everyday Math
Accurate, easy-to-use tools for students, professionals, and everyday life
Why Choose MultiCalc?
Instant Results
Get accurate calculations in seconds with our optimized tools. No waiting, no complicated processes.
Mobile Friendly
Use our calculators on any device - smartphones, tablets, or desktop computers.
Privacy Focused
We don't store your personal data. All calculations happen securely in your browser.
Most Popular Calculators
Health & Fitness Calculators
Track your health metrics with our accurate health calculators. From BMI to body fat percentage, we provide the tools you need for your fitness journey.
Education & Math Calculators
Essential tools for students, teachers, and math enthusiasts. From basic arithmetic to advanced equations, solve all your academic math problems with our precise calculators.
Academic Tools
Basic Math
Advanced Math
Scientific Calculator
Advanced functions including logarithms, trigonometry, and exponents
FeaturedEquation Solver
Solve linear and quadratic equations with step-by-step solutions
Pythagorean Theorem
Find missing sides of right triangles using a² + b² = c²
Probability Calculator
Calculate probabilities of single and multiple events
Utility & Conversion Tools
Essential conversion tools for everyday use. Quickly convert between units, time zones, measurements, and more with our accurate, easy-to-use calculators.
Date & Time
Measurements
Science & Engineering
Digital & Technology
Comprehensive Calculator Resource
MultiCalc provides the most comprehensive collection of free online calculators available anywhere. Whether you're a student working on math homework, a professional needing financial calculations, or just someone looking to convert units in the kitchen, we have the perfect tool for you.
Trusted by Thousands Daily
Our calculators are used by students, teachers, financial professionals, health practitioners, and DIY enthusiasts every day. The accuracy of our tools makes MultiCalc a trusted resource for important calculations.
No Registration Required
Unlike many other calculator sites, we don't require you to create an account or provide any personal information. All our tools are completely free to use with no hidden costs or premium memberships.
Constantly Expanding Collection
We regularly add new calculators based on user requests and emerging needs. Have a suggestion for a calculator we should add? Contact us with your idea!