Essential Calculators & Converters
A collection of useful tools to help you with everyday calculations and conversions.
Percentage Calculator
Calculate percentages, increases, decreases, and percentage differences.
Ratio Calculator
Calculate ratios, proportions, and scale factors.
Age Calculator
Calculate age from birthdate, including years, months, and days.
Loan Calculator
Calculate loan payments, interest, and amortization schedule.
BMI Calculator
Calculate Body Mass Index (BMI) and determine your weight category.
Time Calculator
Calculate time differences, add/subtract time, and convert time units.
Unit Converter
Convert between different units of measurement including length, weight, and temperature.
Discount Calculator
Calculate discounts, sale prices, and savings amount.
PCP Finance Calculator
Calculate monthly payments for Personal Contract Purchase car finance deals with balloon payments.
Tip Calculator
Calculate tips and split bills among multiple people.
Pregnancy Due Date Calculator
Calculate your estimated due date and track your pregnancy progress with our comprehensive pregnancy due date calculator.
Mortgage Calculator
Calculate monthly mortgage payments, total interest, and amortization schedule for home purchases.
Why Choose Our Free Calculators?
100% Free & No Registration
All our calculators are completely free to use with no sign-up required.
Accurate & Reliable
Built with precise mathematical formulas for accurate results every time.
Mobile-Friendly
Optimized for all devices - use on desktop, tablet, or mobile phone.
Instant Results
Get immediate calculations without waiting or downloading software.
Popular Calculator Categories
📊 Financial Calculators
Loan calculators, tip calculators, and discount calculators for all your financial needs.
🧮 Maths Calculators
Percentage calculators, ratio calculators, and time calculators for mathematical calculations.
⚖️ Health & Fitness
BMI calculator to assess your health status and weight category.
📏 Unit Converters
Convert between different units of length, weight, and temperature.
Comprehensive Online Calculator Suite
Our free online calculator collection provides essential tools for everyday calculations, financial planning, health assessments, and mathematical conversions. Whether you're a student, professional, or just need quick calculations, our calculators offer accurate results instantly.
Financial Calculators for Smart Planning
Our financial calculators help you make informed decisions about loans, tips, and discounts. The loan calculator provides detailed payment breakdowns, while the tip calculator ensures fair tipping for services. The discount calculator helps you find the best deals and calculate savings on purchases.
Mathematical Tools for Precision
From percentage calculations to ratio scaling, our mathematical calculators handle complex computations with ease. The percentage calculator works with increases, decreases, and differences, while the ratio calculator maintains proportions when scaling dimensions.
Health & Time Management
Monitor your health with our BMI calculator, which provides weight categories and health status assessments. The age calculator determines precise age in years, months, and days, while the time calculator handles date differences and time conversions.
Universal Unit Conversion
Our unit converter supports multiple measurement categories including length (meters, feet, inches), weight (kilograms, pounds, ounces), and temperature (Celsius, Fahrenheit, Kelvin). Perfect for international conversions and scientific calculations.
Frequently Asked Questions
Are these calculators really free?
Yes, all our calculators are completely free to use. No registration, no hidden fees, and no limitations on usage.
How accurate are the calculations?
Our calculators use standard mathematical formulas and are tested for accuracy. Results are precise and reliable for most practical applications.
Can I use these on mobile devices?
Absolutely! All our calculators are fully responsive and work perfectly on smartphones, tablets, and desktop computers.
Do you store my calculation data?
No, we don't store any of your input data. All calculations are performed locally in your browser for privacy and security.