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Best Free Online Calculators (Top Categories)
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Financial
Loan, mortgage, investment, and tax calculators
Health & Fitness
BMI, calorie, nutrition, and medical calculators
Maths
Algebra, geometry, statistics, and advanced maths
Physics
Force, energy, motion, and physics calculations
Construction
Property, rent, and construction calculations
Food
Nutrition, calorie, and meal planning calculators
Sports
Fitness, exercise, and sports-related calculators
Games
Play fun and interactive games to train your brain
Other Calculators
Free miscellaneous calculators for daily life, conversions, and unique needs
Software, Web & IT
Professional calculators for software development, web design, and IT infrastructure
Business & Startups
Essential calculators for entrepreneurs, startups, and business planning
Popular Online Calculators
Our most frequently used calculation tools
Mortgage Calculator
Calculate monthly payments and total interest for your home loan
BMI Calculator
Calculate your Body Mass Index and understand your weight status
Loan Calculator
Calculate loan payments and schedules for any type of loan
Percentage Calculator
Calculate percentages, ratios, and percentage changes easily
Compound Interest
Calculate investment growth over time with compound interest
Calorie Calculator
Calculate daily calorie needs based on your lifestyle and goals
Our Expert Authors
Meet the talented minds behind our calculators and content
Realynn Reed
Realynn Reed Physics Expert
Felix Yacoub
Felix Yacoub Mathematics Expert
Antonio Ares
Antonio Ares – Sports & Performance Consultant
Simon Stephen
Simon Stephen Health & Fitness Expert
Aiden Asher
Aiden Asher – Specialist, Useful Calculators
Neo Nicholas
Neo Nicholas Financial Accounting Expert
Hudson Hale
Hudson Hale | Construction Calculator Expert
Jessica Adam
Chef Jessica Adam | Food & Nutrition Expert
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