Choose a Calculator
Select from 32 free calculators and tools.
All Calculators A–Z
Antenna Length Calculator
Calculate approximate antenna lengths from frequency and wavelength.
Open Calculator →Basic Calculator
Perform everyday maths plus scientific calculations including powers and trig.
Open Calculator →BMI Calculator
Calculate your Body Mass Index using metric or imperial measurements.
Open Calculator →Broadband Calculator
Estimate download times and compare broadband speeds for files and online use.
Open Calculator →Steps & Calories
Estimate walking distance and calories burned from your daily step count.
Open Calculator →Cat Age Calculator
Estimate your cat's age in equivalent human years.
Open Calculator →Compound Interest
Estimate how money can grow over time using compound interest.
Open Calculator →Concrete Calculator
Estimate concrete volume for slabs, footings, walls and circular areas.
Open Calculator →Currency Converter
Convert between currencies using exchange rates entered into the calculator.
Open Calculator →Dog Age Calculator
Estimate your dog's age in equivalent human years based on age and size.
Open Calculator →Fuel Cost Calculator
Estimate journey fuel usage and cost using distance, MPG and fuel price.
Open Calculator →Gold & Silver Calculator
Estimate gold and silver values by weight and purity using the preset or your own metal price.
Open Calculator →Laminate Floor Calculator
Estimate how much laminate flooring you need for a room, including extra material.
Open Calculator →Loan Calculator
Estimate monthly loan payments, interest, fees and total amount repayable.
Open Calculator →Miles ↔ Kilometres
Quickly convert distances between miles and kilometres.
Open Calculator →Mortgage Calculator
Estimate mortgage repayments from property price, deposit, interest rate and term.
Open Calculator →Nautical Calculator
Convert common nautical distance and speed measurements.
Open Calculator →Paint Calculator
Estimate how much paint you need for walls based on room dimensions and coverage.
Open Calculator →PC Power Calculator
Add the power requirements of your PC components and estimate a suitable PSU wattage.
Open Calculator →Phone Contract Calculator
Break down a mobile contract and estimate how much you are paying for the handset.
Open Calculator →Resistor Colour Code
Decode resistor colour bands to calculate resistance and tolerance values.
Open Calculator →Roman Numeral Calculator
Convert numbers to Roman numerals or Roman numerals back into numbers.
Open Calculator →Room Size Calculator
Calculate floor area in square metres and square feet from room dimensions.
Open Calculator →Savings Goal Calculator
Set a savings target and date to estimate how much to save each month, week or day.
Open Calculator →Shoe Size Converter
Convert common shoe sizes between UK, US and European sizing systems.
Open Calculator →Stopwatch
Measure elapsed time with a simple browser-based stopwatch.
Open Tool →Subscription Calculator
Add up subscriptions and see their combined weekly, monthly and yearly cost.
Open Calculator →Swimming Length Calculator
Convert swimming pool lengths into total distance and track your swim.
Open Calculator →Temperature Converter
Convert temperatures between Celsius, Fahrenheit and Kelvin.
Open Calculator →Video File Size Calculator
Estimate video storage from resolution, frame rate, length and bitrate or quality.
Open Calculator →Wallpaper Calculator
Estimate how many wallpaper rolls you need from wall and roll dimensions.
Open Calculator →Water Volume Calculator
Calculate water capacity for tanks, ponds, pools, aquariums and containers.
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