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iCalculator: Online Calculators

iCalculator contains thousands of free online calculators which we regularly update in support of our community. iCalculator has a global audience with tax and finance calculators for the UK, US, Canada, Australia, India, Jamaica and more. We also provide engineering, health, website, mathematics and logistics calculators to name a few. Use the search feature to find a specific calculator or browse by country or category. Can't find what you're looking for? Did you know we build new calculators based on community feedback? Contact us or leave a message in our forums or leave a message on our Facebook page and we will get back to you to discuss your requirements.

Finance Calculators

Finance calculators including personal and business finance. PAYE, Tax, NICs, loans, Car PCP, Mortgage, household budgets and more.


Tax Calculators

Tax and take home pay calculators from across the globe: United Kigdom, United States, Australia, India, Canada, Jamaica and more.


Human Resource Calculators

Human Resource tools and calculators for Staff Management like absence management and recruitment costs.


Tax Guides

Tax Guides and Tax Tips. Simple guides to help you make the most of your finances. Good rainy day reading.


Mathematics Calculators

Mathematics calculators with guides and instruction on specific mathematic formula. Check your results as you go.


Tax and Finance Terminology

Common terminology used on iCalulator's Tax and Finance Calculators with savings tips and advice.


Logistics Calculators

Calculate the volumetric weight or work out how many cartons you can fit into a 40ft container, logistics made simple.


Tax and Finance News

The latest tax and finance news from around the world, stay on top of global tax and finance trends and changes.


Contractor Calculators

Dedicated to contractors and freelancers, this section includes calculators, news, articles and guides to contracting.


iCalculator Forums

Join the iCalculator community, join discussions, leave feedback, request new features and calculators.


Engineering Calculators

Engineering and machining calculators for fabrication and stress measurement.


Sports Calculators

Health, Fitness and Sports Calculators. Live a healthy stress free, long and fruitful life.


Welcome to iCalculator

iCalculator is a collection of online calculators which are specifically designed for online use via computers, mobile phones and tablets iCalculator is an ongoing project that aims to provide calculators for our community for all their personal and business needs. We regularly add new calculators and provide new online calculators on request as well as expanding on the calculators we have in each section.

Did you know you can leave feedback, request new calculator features and get advice and support from our community on our forums? Join us now.

Calculators are our passion

We know it's nerdy but calculators are our passion and we aim to make our calculators easy to use and understand. When practicable, we provide detailed breakdown of the calculations and supporting information so that you understand exactly how the calculator works and what information you need to know. A good example of this is our tax calculator, which provides a line by line calculation explanation, analysis and links to supporting information so that you can have a clear understanding of how your tax (PAYE, NIC's etc.) are calculated.

The iCalculator project was launched in 2009. In the early days iCalculator simply provided a few mathematical calculators. As the years have past, iCalculator has grown and grown and now provides dedicated advice and support (with tax guides, supporting articles and clarification of terminology). We have, and continue, to refine our calculators to provide more detailed breakdown, results and information so that you have the tool you need.

Get involved

The calculators provided on this website are free to use, we support a lot of online calculators but we need your support to ensure that any bugs are identified and new features added. We kindly ask that you provide feedback and raise feature requests through our Forum, or by contacting us through our website, maybe join us on Facebook or send us a tweet on Twitter.