Add to phone

Calculators and Converters

Choose from a multitude of free calculators and converters in the areas of finance, health, cooking, math and science for everyday use.

Financial Calculators

A suite of financial calculators to assist with projections for savings, investments, loans, mortgages and small business calculations.

Compound Interest

Use our compound interest calculator to determine the future value of your savings or investments over time.

Loan Calculator

Calculate your monthly repayments for personal loans, student loans or mortgages.

Featured Conversions

A series of individual converters for popular weight, length, height, area and energy units.

Kilos to stone & pounds

Convert between these popular units of weight in the imperial and metric systems.

Centimeters to feet & inches

Our popular calculator for converting units of height, length or distance.

Health

A small collection of health calculators, from BMI and BMR through to pregnancy and exercise.

Steps to Miles Calculator

Calculate how many miles you've walked and how many calories you've burned for your walk or run.

Pregnancy Calculator

Use our calculator to work out your possible due date and see the key milestones on your pregnancy journey.

Handy and Fun

A collection of handy calculators for DIY construction projects as well as math calculators and a selection of tools for calculating dates.

Square Footage Calculator

Work out the square footage of an area for flooring, landscaping, carpets, or other construction projects.

Birthday Calculator

Discover what day you were born on, your star sign, celebrities you share your birthday with and more.

Cooking Calculators

A suite of recipe calculators to help you with converting between metric and imperial units when baking or cooking.

Cooking Converter

Use this recipe converter to quickly convert between all common units involved in cooking.

Cups to Grams

Convert easily between cups and grams using this handy conversion tool.

Unit Conversions

A series of unit converters for area, energy, fuel consumption, length & distance, volume, weight and more.

Area Converter

Convert between acres, square centimeters, square feet, square miles and other units of area.

Height Converter

Use this converter to change imperial measurements of height into metric, and vice-versa.

Featured Articles

How Much Is a TRILLION?

A trillion is one million million and has twelve zeroes: 1,000,000,000,000.Fast facts:On 2 August 2018, Apple became the first publicly traded U.S company to surpass a market valuation of $1 trillion. Two years later its valuation ...

How to Write Feet and Inches

There are two popular ways of writing feet: the abbreviation “ft.” or the single apostrophe (′). Inches can be represented using “in.” or with a double apostrophe (″). As an example, five feet, ten inches could be written as 5 ft. 10 in or 5′10″...

Compound Interest Formula - Explained

An in-depth look at the compound interest formula as we break down how to calculate compound interest. The concept of compound interest is that interest is added back to the principal sum so that interest is earned on that added interest during the next compounding period.

How To Measure Your Waist

Whether you're ordering clothes online, monitoring your weight, or designing a bespoke bucket chair for your space-shuttle to the moon (look, the world is on fire; it's OK to have a plan B), you need to be able to measure your body accurately. Here's how to get the digits for your waist.