Free online calculators
for every need
Fast, accurate, and easy-to-use tools for finance, tax, health, business, and everyday life.

Need a calculator for your own website?
Copy a lightweight iframe widget for selected calculators and preview how it fits in full-width pages, article columns, sidebars, and mobile layouts.
Featured calculators
Our most popular tools to help you make quick calculations
Browse by category
Find the perfect calculator for your needs
Finance
53 tools
Loans, mortgages, investments, and personal finance tools.
Business
44 tools
Revenue, margins, startup metrics, and business tools.
Tax Calculators
30 tools
Income tax, VAT, capital gains, and more.
Health
7 tools
BMI, calories, blood pressure, and wellness calculators.
Fitness
11 tools
Workout, nutrition, and performance calculators.
Education
19 tools
GPA, grades, student loans, and academic tools.
Property & Construction
28 tools
Mortgage, stamp duty, renovation, and building tools.
Lifestyle
29 tools
Wedding, travel, car, and everyday life cost calculators.
Everyday Tools
27 tools
Age, date, tip, unit, and daily life calculators.
Word Games
5 tools
Scrabble, Wordle, anagram, and word puzzle helpers.
Tech & Internet
42 tools
Bandwidth, binary, colour, and developer tools.
Math & Science
46 tools
Scientific, algebraic, physics, and chemistry calculators.
Generators
21 tools
Password, QR code, name, colour, and content generators.
Why use our tools
Built with precision and designed for simplicity
Fast and accurate
Get instant results with our optimised calculation engines
Free to use
All calculators are completely free with no hidden costs
No signup required
Start calculating immediately without creating an account
Mobile-friendly
Works perfectly on all devices, from phones to desktops
Popular calculators
Most used tools by our community
Compound Interest Calculator
Finance
Calculate how your investments grow over time with compound interest.
Loan Calculator
Finance
Calculate monthly payments, total interest, and loan cost.
Mortgage Calculator
Finance
Estimate principal-and-interest mortgage payments, deposit-based loan amount, and affordability.
BMI Calculator
Health
Calculate your Body Mass Index using metric or imperial units.
Calorie Calculator
Health
Estimate daily calorie needs, BMR, and TDEE based on age, height, weight, and activity level.
Looking for something else?
We have hundreds of free calculators across finance, health, math, engineering, and everyday life. Browse our full directory to find exactly what you need.
View All Calculators