All 339 UK Calculators
Every free UK calculator on Calks.uk, organised by category. All calculations use the latest 2026/27 rates from HMRC, GOV.UK, and the Bank of England.
Tax & HMRC (36) Pay & Salary (31) Pensions & Retirement (19) Mortgage & Property (26) Loans & Debt (13) Business & Self-Employed (28) Savings & Investment (18) Benefits & Welfare (15) Motoring & Transport (17) Health & Fitness (17) Construction & DIY (20) Energy & Home (13) Education (13) Agriculture & Farming (7) Immigration (6) Insurance (8) Legal (7) Tools & Converters (26) Maths & Science (11) Gardening (8)
Tax & HMRC
(36 calculators)- Annual Tax Summary Calculator
- Blind Person's Allowance Calculator
- Capital Gains Tax Calculator
- Capital Gains Tax on Property Calculator
- Company Car Tax (BiK) Calculator
- Corporation Tax Calculator
- Council Tax Calculator
- Council Tax Reduction Calculator
- Crypto Tax Calculator UK
- Crypto Tax CARF Calculator
- Dividend Tax Calculator
- Employer National Insurance Calculator
- Employer NI Rise Impact Calculator
- High-Value Property Council Tax Calculator (2028)
- Income Tax Calculator
- Inheritance Tax Calculator
- Inheritance Tax on Pensions Calculator (2027)
- Landlord Tax Calculator (Section 24)
- LBTT (Scotland) / LTT (Wales) Calculator
- Making Tax Digital Readiness Calculator
- Marriage Allowance Calculator
- National Insurance Calculator
- NI on Salary Sacrifice Calculator (2029)
- Non-Dom Tax Calculator (FIG Regime)
- Scottish Income Tax Calculator
- Self-Assessment Tax Calculator
- Side Hustle / Trading Allowance Calculator
- Stamp Duty Additional Property Calculator
- Stamp Duty Calculator (SDLT)
- Stamp Duty First-Time Buyer Calculator
- Tax Bracket Visualizer
- Tax Code Checker — HMRC Code Lookup
- Tax Refund Calculator
- Tax Year Comparison Calculator
- VAT Calculator
- VAT Flat Rate Scheme Calculator
Pay & Salary
(31 calculators)- Adoption Pay Calculator
- Agency Worker Pay Calculator
- Benefits in Kind (P11D) Calculator
- Bonus Tax Calculator
- Business Mileage Calculator
- Employer Cost Calculator
- EV Salary Sacrifice Calculator
- Freelance Tax Calculator
- Holiday Entitlement Calculator
- Hourly to Annual Salary Calculator
- Mileage Allowance Calculator (HMRC)
- NHS Pay Calculator (Agenda for Change)
- Night Shift Allowance Calculator
- Notice Period Calculator
- Overtime Pay Calculator
- Pay Rise Calculator (Real Terms)
- Pro-Rata Salary Calculator
- Redundancy Pay Calculator
- Salary Sacrifice Calculator
- Settlement Agreement Calculator
- Shared Parental Leave Calculator
- Shared Parental Pay (ShPP) Quick Calculator
- Statutory Maternity Pay Calculator
- Statutory Paternity Pay Calculator
- Statutory Sick Pay Calculator
- Take-Home Pay Calculator
- Teacher Pay Calculator
- UK Minimum Wage Calculator
- Umbrella Company Calculator
- Working from Home Tax Relief Calculator
- Zero-Hours Contract Earnings Calculator
Pensions & Retirement
(19 calculators)- Annuity Calculator — Retirement Income
- Employer Pension Contribution Calculator
- How Much Pension Do I Need?
- LGPS Pension Calculator
- NHS Pension Calculator
- Pension Annual Allowance Calculator
- Pension Consolidation Calculator
- Pension Drawdown Calculator
- Pension Emergency Tax Calculator
- Pension Lump Sum Calculator (PCLS)
- Pension Sharing on Divorce Calculator
- Pension Tax Relief Calculator
- Pension vs ISA Calculator
- Salary Sacrifice Pension Calculator
- SIPP Calculator — Self-Invested Pension
- State Pension Age Calculator
- State Pension Calculator
- Teachers' Pension Calculator
- Workplace Pension Calculator
Mortgage & Property
(26 calculators)- Buy-to-Let Mortgage Calculator
- Buy-to-Let Yield Calculator
- Debt-to-Income Ratio Calculator
- Equity Release Calculator
- First Homes Scheme Calculator
- First-Time Buyer Cost Calculator
- Ground Rent Calculator
- Home Buying Total Cost Calculator
- Home Moving Cost Calculator
- House Price per Square Foot Calculator
- Leasehold Extension Calculator
- Loan-to-Value (LTV) Calculator
- Mortgage Affordability Calculator
- Mortgage Early Repayment Calculator
- Mortgage Interest Rate Comparison
- Mortgage Overpayment Calculator
- Mortgage Repayment Calculator
- Offset Mortgage Calculator
- Remortgage Calculator
- Rent vs Buy Calculator
- Rental Yield Calculator
- Right to Buy Calculator
- Service Charge Calculator
- Shared Ownership Calculator
- Shared Ownership Mortgage Affordability
- Shared Ownership Staircasing Calculator
Loans & Debt
(13 calculators)- APR Calculator — True Interest Rate
- Buy Now Pay Later Calculator
- Car Finance Calculator (PCP/HP/Loan)
- Credit Card Repayment Calculator
- Debt Consolidation Calculator
- Debt-Free Date Calculator
- Overdraft Cost Calculator
- Personal Loan Calculator
- Postgraduate Loan Repayment Calculator
- Should I Repay Student Loan Early?
- Student Loan Interest Calculator
- Student Loan Plan 4 (Scotland) Calculator
- Student Loan Repayment Calculator
Business & Self-Employed
(28 calculators)- Annual Investment Allowance Calculator
- Apprenticeship Levy Calculator
- Break-Even Calculator
- Business Mileage Log Calculator
- Business Rates Calculator
- Capital Allowances Calculator
- Cash Flow Calculator
- CIS Subcontractor Tax Calculator
- Contractor Day Rate Calculator
- Contractor vs Permanent Salary Calculator
- Depreciation Calculator
- Dividend vs Salary Calculator
- Employee Cost Breakdown Calculator
- Employee vs Contractor Calculator
- Freelance Quote Calculator
- Invoice & Job Profit Calculator
- IR35 Take-Home Pay Calculator
- Late Payment Interest Calculator
- MTD Readiness Checklist
- Payroll Calculator — UK PAYE & NI
- Profit & Loss Calculator
- Profit Margin & Markup Calculator
- R&D Tax Credit Calculator
- Sole Trader Tax Calculator
- Sole Trader vs Limited Company Calculator
- Sole Trader vs Ltd Comparison Table
- VAT Return Calculator
- VAT Threshold Monitor
Savings & Investment
(18 calculators)- CGT on Shares Calculator
- Compound Interest Calculator
- Cost of Delay Calculator
- Dividend Income Calculator
- Help to Save Calculator
- Investment Return Calculator
- ISA Calculator — Tax-Free Savings Growth
- Junior ISA Calculator
- Lifetime ISA Calculator
- NS&I Savings Calculator
- Premium Bonds Calculator
- Real Return Calculator (After Inflation)
- Regular Savings Calculator
- Rule of 72 Calculator
- Savings Goal Calculator
- Savings Interest Tax Calculator
- Stocks & Shares ISA Calculator
- Wealth Growth Projector
Benefits & Welfare
(15 calculators)- 30 Hours Free Childcare Calculator
- Benefit Cap Calculator
- Care Home Cost Calculator
- Carer's Allowance Calculator
- Child Benefit Calculator
- Child Maintenance (CMS) Calculator
- Childcare Costs Calculator (Tax-Free Childcare)
- Free School Meals Eligibility Calculator
- High Income Child Benefit Charge Calculator
- Housing Benefit Calculator
- Pension Credit Calculator
- Tax Credits Calculator (Legacy)
- Universal Credit Calculator
- Winter Fuel Payment Calculator
- Working Hours & Benefits Threshold Calculator
Motoring & Transport
(17 calculators)- Car Depreciation Calculator
- Car Import Duty Calculator
- Car Lease vs Buy Calculator
- Car Tax (VED) Calculator
- Commute Cost Calculator
- Driving Test Cost Calculator
- EV Charging Cost Calculator
- EV Pay-Per-Mile Road Pricing Calculator
- EV vs Petrol Running Cost Calculator
- Fuel Cost Calculator
- London Congestion Charge Calculator
- Miles Per Gallon Calculator
- MOT Date Calculator
- Road Trip Cost Calculator
- Speeding Fine Calculator
- Train Season Ticket Calculator
- ULEZ Compliance Checker
Health & Fitness
(17 calculators)- Alcohol Units Calculator
- BMI Calculator
- BMI Calculator for Children
- Body Fat Percentage Calculator
- Calorie Calculator (TDEE)
- Heart Rate Zone Calculator
- Ideal Weight Calculator
- Macro Calculator — Protein, Carbs & Fat
- Ovulation Calculator
- Pace Calculator (Running)
- Pregnancy Due Date Calculator
- Protein Intake Calculator
- Sleep Calculator — Bedtime & Wake Time
- Steps to Miles/Km Calculator
- Waist-to-Hip Ratio Calculator
- Water Intake Calculator
- Weight Loss Calculator
Construction & DIY
(20 calculators)- Bathroom Cost Calculator
- Bricks & Blocks Calculator
- Concrete Calculator
- Decking Calculator — Boards & Cost
- Extension Cost Calculator
- Fencing Calculator — Panels & Cost
- Flooring Calculator
- Gravel Calculator — Tonnes & Cost
- Insulation Calculator
- Kitchen Cost Calculator
- Loft Conversion Cost Calculator
- Paint Calculator — Litres & Coverage
- Plaster Calculator — Bags & Coverage
- Radiator BTU Calculator
- Roof Tiles Calculator
- Staircase Calculator
- Tile Calculator — Tiles Needed & Cost
- Timber Calculator — Board Feet & Cost
- Underfloor Heating Calculator
- Wallpaper Calculator
Energy & Home
(13 calculators)- Boiler Replacement Cost Calculator
- Double Glazing Savings Calculator
- Electricity Cost Calculator (per appliance)
- Energy Bill Calculator
- EPC Band Comparison Calculator
- EPC Rating Improvement Calculator
- Gas Cost Calculator
- Heat Pump Running Cost Calculator
- LED Bulb Savings Calculator
- Smart Meter / Appliance Cost Calculator
- Solar Panel Savings Calculator
- Standing Charge Savings Calculator
- Water Bill Calculator
Education
(13 calculators)- A-Level Grade Calculator
- Bursary & Scholarship Impact Calculator
- Exam Score Calculator
- GCSE Grade Calculator (9-1)
- GPA Calculator (UK)
- Postgraduate Loan Total Cost Calculator
- Student Budget Calculator
- Student Budget Planner
- Student Loan Total Cost Calculator
- Student Maintenance Loan Calculator
- UCAS Tariff Points Calculator
- University Cost Calculator
- Weighted Average Grade Calculator
Agriculture & Farming
(7 calculators)Immigration
(6 calculators)Insurance
(8 calculators)Legal
(7 calculators)Tools & Converters
(26 calculators)- Age Calculator — Years, Months & Days
- Area Converter (m² / ft² / acres)
- Birthday Calculator
- Clothing Size Converter (UK/EU/US)
- Cooking Measurement Converter
- Cost of Living Calculator
- Currency Converter — Live Exchange Rates
- Date Calculator — Days Between Dates
- Discount Calculator
- Inflation Calculator
- Length Converter — Metric & Imperial
- Number to Words Converter
- Percentage Calculator
- Random Number Generator
- Ratio Calculator — Simplify & Solve
- Shoe Size Converter (UK/EU/US)
- Speed, Distance & Time Calculator
- Split Bill Calculator
- Temperature Converter
- Time Duration Calculator
- Time Zone Converter
- Tip Calculator — Restaurant & Service Tips
- Volume Converter — Litres, Gallons & More
- Wedding Budget Calculator
- Wedding Cost Calculator (Detailed)
- Weight Converter (kg / stone / pounds)
Maths & Science
(11 calculators)Gardening
(8 calculators)Can't find what you need?
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