All Calculator Categories UK | 300+ Free Online Tools 2025

All Calculator Categories

Over 300 free UK calculators organised by category. Updated with official 2025/26 HMRC rates, DWP benefit thresholds, and government regulations for accurate results.

Tax Calculators 12+

Income tax, VAT, stamp duty, capital gains, corporation tax, and dividend calculations. Updated for 2025/26 tax year with HMRC rates.

View Tax Calculators

Finance Calculators 10+

Savings, loans, compound interest, ISA, pension projections, and personal budgeting tools for UK financial planning.

View Finance Calculators

Property Calculators 8+

Mortgage payments, stamp duty (SDLT), rental yield, buy-to-let analysis, and home affordability for UK property.

View Property Calculators

Health Calculators 10+

BMI, calories, body fat, pregnancy due date, alcohol units, and fitness calculations using NHS guidelines.

View Health Calculators

Education Calculators 10+

UCAS tariff points, GCSE grades, student loan repayments, GPA conversion, and degree classification tools.

View Education Calculators

Business Calculators 8+

VAT returns, profit margins, break-even analysis, business rates, and employer NI contributions for UK businesses.

View Business Calculators

Lifestyle Calculators 12+

Age, date, time, working days, unit converters, temperature, and everyday practical tools for UK residents.

View Lifestyle Calculators

Travel Calculators 10+

Fuel costs, car tax (VED), MOT, electric vehicle savings, currency conversion, and journey planning tools.

View Travel Calculators

Maths Calculators 8+

Percentages, fractions, scientific calculator, equation solver, probability, and statistics for GCSE/A-Level.

View Maths Calculators

UK Specific 14+

Universal Credit, State Pension, Child Benefit, Council Tax, IR35, National Minimum Wage, and other UK government benefit calculators.

View UK Calculators

Your Complete UK Calculator Resource

UK Calculator provides the most comprehensive collection of free online calculators designed specifically for United Kingdom residents. Whether you're calculating your take-home pay, planning a mortgage, working out student loan repayments, or checking your Universal Credit entitlement, our tools use official UK rates and regulations to give you accurate results you can rely on.

Since launching, we've helped millions of UK residents make informed financial decisions, plan major purchases, track health goals, and navigate the complexity of British tax and benefit systems. Every calculator is built from the ground up with UK-specific requirements, ensuring you get results that actually apply to your situation rather than generic international estimates.

300+

Free Calculators

Why UK-Specific Calculators Matter

The United Kingdom has unique tax systems, benefit structures, and measurement conventions that generic international calculators simply don't handle correctly. From the complexity of Income Tax bands and National Insurance thresholds to Scottish tax rate differences and the nuances of Stamp Duty Land Tax, UK residents need calculators built with British regulations in mind.

Consider income tax alone: the UK has a Personal Allowance that tapers away above £100,000, separate Scottish income tax rates with six bands instead of three, a Marriage Allowance transfer option, and National Insurance contributions that operate on completely different thresholds. A generic tax calculator can't account for these UK-specific rules, leaving you with inaccurate estimates that could affect your financial planning.

UK-Specific Features Built Into Every Calculator

Income Tax: English, Welsh, Scottish, and Northern Irish rate variations
National Insurance: Classes 1, 2, 3, and 4 with current thresholds
SDLT: England/NI rates, Welsh LTT, Scottish LBTT with regional differences
Benefits: Universal Credit, Child Benefit, State Pension with DWP rates
Education: UK student loan Plans 1, 2, 4, and 5 with correct thresholds

Category Overview and Popular Tools

Our calculators are organised into ten distinct categories, each containing specialised tools for different aspects of life in the UK. Whether you're a first-time buyer working out stamp duty, a student calculating loan repayments, or a business owner managing VAT returns, there's a calculator designed for your needs.

Category	Calculators	Most Popular Tool	Key Feature
Tax Calculators	12+	UK Salary Calculator	2025/26 HMRC rates
Finance Calculators	10+	Mortgage Calculator	UK lender criteria
Property Calculators	8+	SDLT Calculator	Regional variations
Health Calculators	10+	BMI Calculator	NHS guidelines
Education Calculators	10+	Student Loan Calculator	Plan 1/2/4/5 support
Business Calculators	8+	VAT Calculator	MTD compatible
Lifestyle Calculators	12+	Age Calculator	UK date formats
Travel Calculators	10+	Car Tax Calculator	VED rates 2025/26
Maths Calculators	8+	Percentage Calculator	GCSE/A-Level aligned
UK Specific	14+	Universal Credit Calculator	DWP rates 2025/26

Updated for 2025/26 Tax Year

All tax-related calculators are updated following each UK Budget announcement. For the 2025/26 tax year (6 April 2025 to 5 April 2026), our calculators reflect the current rates and thresholds that affect your finances:

HMRC Tax Rates 2025/26

Personal Allowance: £12,570
Basic Rate (20%): £12,571 - £50,270
Higher Rate (40%): £50,271 - £125,140
Additional Rate (45%): Over £125,140
NI Primary Threshold: £12,570/year
Employee NI Rate: 8%

DWP Benefit Rates 2025/26

New State Pension: £221.20/week
Universal Credit (25+): £393.45/month
Child Benefit (Eldest): £25.60/week
National Living Wage: £12.21/hour
SSP Rate: £116.75/week
SMP/SPP Rate: £184.03/week

Privacy-Focused Calculations

All calculations are performed locally in your browser using JavaScript. Your financial data never leaves your device and is never stored on our servers. There's no registration required, no accounts to create, and no personal information collected. Simply enter your figures, get your results, and close the page—your data stays with you.

We don't use tracking cookies for your calculation inputs, we don't sell data to third parties, and we don't require email addresses or personal details to use any calculator. This privacy-first approach means you can confidently enter sensitive financial information knowing it remains completely private and secure on your own device.

Our Privacy Commitment

All calculations performed locally in your browser
No financial data transmitted to our servers
No registration or account creation required
No tracking cookies for calculation inputs
No data sharing with third parties
Data cleared when you close the page

How to Get the Most Accurate Results

While our calculators are designed to provide accurate estimates, the quality of your results depends on the information you provide. Here are some tips to ensure you get the most useful calculations:

Tips for Accurate Calculations

Use gross figures: For salary calculators, enter your gross (before tax) salary
Include all income: For tax calculations, include all taxable income sources
Check Scottish rates: If you live in Scotland, ensure you select Scottish tax rates where available
Update regularly: Re-run calculations after April each year to use new tax year rates
Verify with HMRC: For official purposes, always confirm results with HMRC or your accountant

Government Data Sources

All rates, thresholds, and calculations on UK Calculator are sourced from official government publications and updated when changes are announced. Our primary sources include:

HMRC: Income Tax rates, National Insurance thresholds, SDLT rates, Capital Gains allowances, VAT regulations
DWP: Universal Credit rates, State Pension amounts, Child Benefit rates, statutory pay rates
GOV.UK: National Minimum Wage, student loan thresholds, car tax bands, benefit eligibility criteria
NHS: BMI categories, calorie guidelines, alcohol unit recommendations, pregnancy timelines
Ofgem: Energy price cap rates, typical consumption figures
DVLA: Vehicle Excise Duty (VED) rates, CO2 emission bands

When official sources announce changes—such as Budget rate updates or mid-year adjustments—we typically update our calculators within 48 hours to ensure you always have access to current information. Each calculator page displays the tax year or date the rates were last verified.

How to Navigate Our Calculator Categories

With over 300 calculators across 10 categories, finding exactly the right tool can seem daunting at first. Our category system is designed to group calculators logically by topic, so you can quickly locate the tool you need. If you are dealing with a tax question, start with the Tax Calculators category. For anything related to buying, selling, or renting property, the Property Calculators category is your starting point. Health-related calculations, from BMI to pregnancy dates, live in the Health Calculators section.

Some calculators appear in multiple categories because they serve overlapping needs. For example, the Salary Calculator appears in both Tax and Finance because it calculates tax deductions while also helping with financial planning. The Mileage Calculator features in both Travel and Business categories because it serves both journey planning and HMRC expense claim purposes. If you cannot find a specific calculator, try browsing the "View All Calculators" page which lists every tool alphabetically.

Tips for Getting the Most Accurate Results

Use current tax year data: Always ensure you are using the correct tax year settings. Our calculators default to 2025/26 rates, but some allow you to select previous years for comparison.
Enter gross figures for income calculations: When using salary or tax calculators, enter your gross annual salary before any deductions for the most accurate results.
Check regional variations: Scottish taxpayers have different income tax rates. Welsh residents use Land Transaction Tax instead of SDLT. Northern Ireland has its own council tax equivalent called domestic rates.
Bookmark frequently used tools: Save your most-used calculators to your browser bookmarks for instant access when you need them.
Cross-reference with official sources: While our calculators use official rates, always verify critical financial decisions with HMRC, your accountant, or qualified financial adviser.

Quick Navigation FAQs

Which category should I use for salary calculations?

For salary and take-home pay calculations, you can use either the Tax Calculators or Finance Calculators category. The Tax category focuses on the Income Tax and National Insurance deductions from your salary, while the Finance category provides a broader view of your overall financial position including budgeting and savings. Both contain our comprehensive UK Salary Calculator which shows your full pay breakdown.

How do I find calculators for Scottish tax rates?

Scottish-specific tax calculations are available within the Tax Calculators category. Our Income Tax Calculator and Salary Calculator both include options to select Scottish tax rates, which feature six bands compared to the rest of the UK's four. Look for a Scotland or Scottish tax toggle within the calculator interface. The UK Specific category also contains tools tailored to Scottish residents.

Can I use these calculators on my mobile phone?

Yes, every calculator on UK Calculator is fully responsive and optimised for mobile devices. The interfaces automatically adjust to fit your screen size, with touch-friendly input fields and appropriately sized buttons. Calculations are performed instantly without page reloads, making them ideal for quick calculations while shopping, during meetings, or when reviewing financial documents on the go.

How quickly are calculators updated after Budget announcements?

We aim to update all affected calculators within 48 hours of any UK Budget announcement or HMRC rate change. For major events like the annual Budget, our team prepares updates in advance based on leaked or expected changes, then finalises and publishes them on Budget day itself. Each calculator page displays the date rates were last verified so you can confirm you are using current figures.

Frequently Asked Questions

Are all UK Calculator tools free to use?

Yes, all 300+ calculators on UK Calculator are completely free to use with no registration required. We don't limit usage, require sign-ups, or charge for any calculator features. All calculations are performed locally in your browser for privacy. There are no premium tiers, hidden costs, or ads that block functionality.

How often are the UK tax rates and thresholds updated?

We update all tax calculators annually following the UK Budget announcements, typically in March/April for the new tax year starting 6 April. Our calculators currently use 2025/26 tax year rates including Income Tax bands (£12,570 Personal Allowance), National Insurance thresholds, SDLT rates, and capital gains allowances. Mid-year changes announced by HMRC are implemented within 48 hours.

Which calculator categories are most popular?

Our most popular categories are Tax Calculators (especially the UK Salary Calculator and VAT Calculator), Finance Calculators (Mortgage Calculator and Loan Calculator), and Health Calculators (BMI Calculator and Calorie Calculator). UK-specific calculators like Universal Credit and Child Benefit are also heavily used, particularly around benefit assessment periods and the start of the new tax year.

Do the calculators work on mobile phones and tablets?

Yes, all UK Calculator tools are fully responsive and work perfectly on smartphones, tablets, and desktop computers. The interface automatically adapts to your screen size with touch-friendly inputs and appropriately sized buttons. Calculations are instant with no page reloads required, making them ideal for quick calculations on the go.

Are the calculations accurate for official purposes?

Our calculators use official HMRC, DWP, and GOV.UK rates and are designed to provide accurate estimates. However, they are for guidance only and should not replace professional advice. For official tax returns, benefit claims, mortgage applications, or significant financial decisions, always verify results with HMRC, your accountant, financial adviser, or other qualified professionals.

What makes UK Calculator different from other calculator websites?

UK Calculator is specifically designed for British residents with UK-specific rates, thresholds, and regulations built into every tool. Unlike generic international calculators, we incorporate Income Tax bands including Scottish rates, all National Insurance classes, regional SDLT/LTT/LBTT variations, ISA and pension allowances, student loan Plan types, and current DWP benefit rates. All data comes directly from official government sources.

Is my financial data safe when using these calculators?

Absolutely. All calculations are performed locally in your browser using JavaScript. Your financial data never leaves your device and is never transmitted to or stored on our servers. There's no registration required, no cookies tracking your calculation inputs, and no personal information collected. When you close the page, your data is gone—your privacy is completely protected.

Can I suggest a new calculator or report an error?

Yes, we welcome feedback and suggestions. If you notice an outdated rate, calculation error, or would like to suggest a new calculator that would help UK residents, please use our Contact page. We review all feedback and prioritise updates based on user demand and official rate changes. Many of our most popular calculators were developed based on user requests.