Free Online Calculators
Calculate anything in seconds: VAT, percentages, BMI, tax codes and much more. Free, fast and no registration required.
Most Popular Calculators
Percentage Calculator
Calculate percentages, percentage changes, and proportions quickly and easily.
BMI Calculator
Calculate your Body Mass Index (BMI) and find out whether your weight is within a healthy range.
Age Calculator
Calculate your exact age in years, months, and days from your date of birth.
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Finance
Financial calculators for VAT, mortgages, loans, interest rates, and money management.
Health
Health calculators: BMI, calories, ideal weight, and wellness tools.
Maths
Maths calculators: percentages, proportions, equations, and operations.
Utilities
Everyday utility calculators: age, dates, unit conversions, and more.
Recently Added
Pregnancy Due Date Calculator
Calculate your estimated due date using Naegele's Rule.
Random Number Generator
Generate random numbers instantly: set your range, quantity, and duplicate options.
Calorie Calculator
Calculate your daily calorie needs using the Mifflin-St Jeor equation.
Compound Interest Calculator
Discover how your savings and investments grow over time with compound interest.
VAT Calculator
Add or remove VAT at 20%, 5%, or 0% instantly. Works for standard, reduced, and zero-rated goods in the United Kingdom.
Mortgage Calculator
Estimate your monthly mortgage repayment for a UK property, including interest, deposit requirements, and Stamp Duty Land Tax.