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Mortgage Calculator

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Percentage Calculator

Quick maths

BMI Calculator

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Mortgage Calculator

Calculate your monthly mortgage payments, total interest, and total cost of your home loan.

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Compound Interest Calculator

Calculate how your savings or investments grow over time with compound interest.

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Loan Calculator

Calculate monthly loan repayments, total interest, and total cost for personal loans, car finance, and more.

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Salary Calculator

Convert your salary between yearly, monthly, weekly, daily, and hourly rates. See your take-home pay after tax.

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VAT Calculator

Add or remove VAT from any amount. Supports UK standard rate (20%), reduced rate (5%), and custom rates.

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BMI Calculator

Calculate your Body Mass Index (BMI) to check whether you are at a healthy weight for your height.

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Calorie Calculator

Estimate your daily calorie needs based on age, height, weight, and activity level.

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Ideal Weight Calculator

Find your ideal weight range based on height and gender using multiple established formulas.

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Pregnancy Due Date Calculator

Calculate your estimated due date and see key pregnancy milestones based on your last menstrual period.

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Percentage Calculator

Calculate percentages easily — find what percent of a number is, percentage change, and more.

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Fraction Calculator

Add, subtract, multiply, and divide fractions. Simplifies results to the lowest terms automatically.

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Area Calculator

Calculate the area of common shapes — rectangle, circle, triangle, trapezium, and more.

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Age Calculator

Calculate your exact age in years, months, and days. Find the time between any two dates.

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Date Calculator

Add or subtract days, weeks, or months from any date. Find the difference between two dates.

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Tip Calculator

Calculate the tip amount and total bill. Split the bill evenly between any number of people.

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Discount Calculator

Calculate the sale price after a percentage discount. See how much you save on any purchase.

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Savings Calculator

Calculate how your savings will grow over time with regular deposits and compound interest.

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Investment Return Calculator

Calculate the future value of your investments based on initial investment, regular contributions, and expected rate of return.

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Hourly to Salary Calculator

Convert an hourly wage to an annual salary, or an annual salary to an hourly rate. Factor in hours per week and weeks per year.

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Budget Calculator

Use the 50/30/20 budget rule to allocate your after-tax income to needs, wants, and savings.

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Retirement Calculator

Project how much your retirement savings will grow and estimate whether you are on track to meet your retirement income goal.

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Credit Card Payoff Calculator

Calculate how long it will take to pay off your credit card balance and how much total interest you will pay.

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Simple Interest Calculator

Calculate simple interest on a principal amount using the formula I = P × r × t. Find total interest earned or owed.

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Inflation Calculator

Calculate how inflation affects the purchasing power of your money over time. See what today's money will be worth in the future.

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Net Worth Calculator

Calculate your total net worth by adding up all your assets and subtracting all your liabilities. Track your financial health over time.

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Effective Tax Rate Calculator

Calculate your effective tax rate by dividing total tax paid by your gross income. Compare your actual tax burden to marginal tax brackets.

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Body Fat Calculator

Estimate your body fat percentage using the US Navy method based on body measurements.

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Macro Calculator

Calculate your optimal daily macronutrient intake — protein, carbohydrates, and fat — based on your goals.

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Water Intake Calculator

Calculate your recommended daily water intake based on your body weight, activity level, and climate.

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Heart Rate Zone Calculator

Calculate your target heart rate training zones using the Karvonen formula for more effective workouts.

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Sleep Calculator

Calculate the best times to fall asleep or wake up based on 90-minute sleep cycles for more refreshing rest.

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BAC Calculator

Estimate your blood alcohol content (BAC) based on drinks consumed, body weight, gender, and time elapsed.

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Ovulation Calculator

Estimate your ovulation date and fertile window based on your menstrual cycle length and last period date.

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Calories Burned Calculator

Calculate calories burned during exercise and daily activities using MET (Metabolic Equivalent of Task) values.

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Average Calculator

Calculate the mean, median, mode, and range from any set of numbers. Enter your data and get all four measures of central tendency instantly.

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Ratio Calculator

Solve proportions and find the missing value in A:B = C:D. Simplify ratios, scale recipes, convert map distances, and work with any proportional relationship.

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Quadratic Equation Solver

Solve any quadratic equation ax² + bx + c = 0. Get both roots, the discriminant, vertex coordinates, and axis of symmetry with full working shown.

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Exponent Calculator

Calculate any power or root. Enter a base and exponent to compute bⁿ, including negative exponents, fractional exponents (roots), and zero power.

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LCM & HCF Calculator

Find the Least Common Multiple (LCM) and Highest Common Factor (HCF/GCD) of two or more numbers. Uses prime factorisation and the Euclidean algorithm with step-by-step working.

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Roman Numeral Converter

Convert between Roman numerals and standard (Arabic) numbers. Enter a Roman numeral like XIV or a number like 2024 and get the conversion instantly with the breakdown explained.

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Scientific Notation Converter

Convert between standard notation and scientific notation. Enter any number and get it expressed as a × 10ⁿ, or enter scientific notation to see the full number.

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Prime Number Calculator

Check if a number is prime, find its complete prime factorisation, and list all prime numbers up to a given limit. Uses trial division and the Sieve of Eratosthenes.

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Unit Converter

Convert length, weight, temperature, volume, and speed between common metric and imperial units instantly.

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Fuel Cost Calculator

Calculate the fuel needed and total cost for any journey based on distance, fuel efficiency, and price per litre or gallon.

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Reading Time Calculator

Estimate how long it takes to read or speak any text based on word count and average reading or speaking speed.

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Grade Calculator

Calculate your weighted average grade across multiple assignments, convert to letter grade and GPA on a 4.0 scale.

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Pace Calculator

Calculate your running or walking pace, speed, and projected finish times for any distance including 5K, 10K, half marathon, and marathon.

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Time Calculator

Add or subtract hours, minutes, and seconds, or find the exact duration between two times of day.

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GPA Calculator

Calculate your semester and cumulative GPA on a 4.0 scale by entering courses, grades, and credit hours.

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Paint Calculator

Calculate how much paint you need for a room based on wall dimensions, number of coats, and standard tin sizes (1L, 2.5L, 5L).

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Stamp Duty Calculator

Calculate stamp duty land tax (SDLT) for property purchases in England. Supports standard buyers, first-time buyers, and additional property purchases.

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Take-Home Pay Calculator

Calculate your exact UK take-home pay after income tax, National Insurance, pension contributions, and student loan repayments. Based on 2025/26 rates.

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TDEE Calculator

Calculate your Total Daily Energy Expenditure — the calories you burn each day based on your height, weight, age, sex, and activity level.

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Scientific Calculator

Free online scientific calculator with trigonometry, logarithms, exponents, factorials, and constants.

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Mean, Median & Mode Calculator

Calculate the mean, median, mode, range, sum, and count from any list of numbers.

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Random Number Generator

Generate one or multiple random numbers between any minimum and maximum value. Supports integers, decimals, and unique number sets.

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Standard Deviation Calculator

Calculate the standard deviation, variance, and mean from any list of numbers. Shows both population and sample standard deviation.

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Period Calculator

Predict your next three periods, fertile window, and ovulation date based on your cycle length.

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Fraction to Decimal Calculator

Convert fractions to decimals and decimals to fractions instantly. Shows simplified fractions, percentages, and whether the decimal terminates or recurs.

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Word Counter

Count words, characters, sentences, and paragraphs in any text. Shows reading time and speaking time instantly.

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