Separate calculator types
Mortgage repayments, bridging loan costs and savings goals use different inputs. Figure groups calculator types by their purpose, with a separate place for each calculation.
✳ CALCULATOR COLLECTION
Calculators for
finance, health
& everyday life.
Work out mortgage repayments, loan costs, take-home pay and BMI. Find the calculation you need across finance, health, property and everyday maths.
CALCULATORS BY SUBJECT
Browse calculator categories
01 / FINANCE
Financial calculators
Free financial calculators for compound interest, savings growth and APR. See how interest builds up over time and compare the true cost of borrowing.
02 / HEALTH
Health and fitness calculators
Free health calculators for BMI, body fat, daily calories, water intake, running pace and sleep cycles. Each page explains its method, inputs and limits.
03 / PROPERTY
Mortgage and property calculators
Free mortgage and property calculators for repayments, affordability, overpayments, stamp duty, buy-to-let, home equity and secured loans.
04 / SALARY
Salary and employment calculators
Free salary calculators for take-home pay, hourly wages, salary sacrifice and holiday entitlement. Each page explains its method, inputs and limits.
05 / EDUCATION
Education calculators
Free grade calculator for working out a weighted average across your assessments and the equivalent degree classification.
06 / AUTOMOBILE & TRANSPORT
Car and transport calculators
Free fuel cost calculator for working out what a journey costs from its distance, your car's fuel economy and the fuel price.
07 / BUSINESS FINANCE
Business finance calculators
Free business loan calculators for repayments, interest, APR, borrowing and eligibility, plus farm, aircraft, asset and start-up finance.
08 / MATHS & STATISTICS
Maths and statistics calculators
Free percentage and fraction calculators: percentages of a number, percentage change, and adding, subtracting, multiplying or dividing fractions.
09 / VEHICLE & ASSET FINANCE
Car and asset finance calculators
Free car, van, boat, caravan and motorcycle finance calculators for repayments, interest, APR, hire purchase and borrowing.
10 / PERSONAL & FAMILY FINANCE
Personal and family finance calculators
Free personal loan calculators for repayments, interest, APR, overpayments, borrowing and eligibility, plus guarantor and private loans.
11 / ANIMALS & PETS
Animal and pet calculators
Free dog age and cat age calculators that convert your pet's age into human years. Each page explains its method, inputs and limits.
12 / DATE & TIME
Date and time calculators
Free date calculator for counting the days, weeks, months and years between two dates. The page explains its method, inputs and limits.
FINANCE AND HEALTH
Financial and health calculators
Loan, interest and savings calculators
Explore loan repayments, compound interest and savings.
01Compound interest calculatorCompound interest calculator: see how your savings grow with interest and monthly contributions, with daily, monthly, quarterly or annual compounding.02Savings calculatorSavings calculator: see how your savings grow with regular monthly deposits and compound interest over any number of years.03APR calculatorAPR calculator: work out the true annual rate of a loan from the amount, upfront fees, monthly payment and term.
Financial calculatorsBMI, calorie and fitness calculators
Explore body measurements, nutrition and running pace.
01BMI calculatorEssentialBMI calculator for adults: work out your body mass index from height and weight in metric or imperial units, with the NHS weight category and healthy range.02Calorie calculatorCalorie calculator: estimate how many calories you need a day to maintain, lose or gain weight from your age, sex, height, weight and activity level.03Body fat calculatorBody fat calculator: estimate your body fat percentage, fat mass and lean mass from your height, weight and tape-measure readings using the US Navy method.04Pace calculatorPace calculator: work out your running pace per kilometre and per mile and your average speed from any distance and finish time.
Health calculatorsPROPERTY FINANCE
Mortgage and bridging
finance calculators
Work out mortgage payments, stamp duty and bridging loan costs. Compare deposits, borrowing terms, interest and property purchase costs.
Inputs, assumptions and results
Each calculator lists the inputs it needs, explains how the result is worked out and answers common questions about it.
Calculator coverage
The collection covers finance, salary, mortgage and student finance calculations. Tax years, regional rules and measurement units are stated where they apply.
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