Online Calculator UK Tax, Finance, Health & More Made Simple

Finance Calculators

UK tax, VAT, PAYE, National Insurance & HMRC-aware calculators

Calculate UK income tax, VAT, National Insurance, mortgage payments, and more using current HMRC rates and thresholds.

• VAT Calculator
• Mortgage Calculator
• Payroll Calculator

Percentage

All percentage calculations

• Percentage Calculator
• Percentage Increase
• Reverse Percentage

Health & BMI Calculators

BMI, Body Fat & fitness calculators (NHS aligned)

Calculate your BMI, body fat percentage, BMR, and weight loss metrics using NHS-aligned health ranges and guidelines.

• BMI Calculator
• Body Fat Calculator
• BMR Calculator

Math Calculators

Scientific & graphing calculators

Advanced math tools including scientific calculators, graphing calculators, matrix operations, and algebra solvers for complex calculations.

• Scientific Calculator
• Graphing Calculator
• Matrix Calculator

Time Calculators

UK working hours, holiday entitlement & time calculations

Calculate ages, date differences, working hours, and UK statutory holiday entitlement. Perfect for UK employment calculations.

• Age Calculator
• Date Difference
• Time Calculator

Conversion Calculators

Miles/km, stones/kg & UK-focused unit converters

Convert between currencies, length units (miles/km), weight units (stones/kg), and more with UK-focused defaults and explanations.

• Currency Converter
• Length Converter
• Unit Converter

Business & Tax Calculators

UK small business & contractor calculators

Calculate profit margins, EBITDA, CAGR, and gross profit for UK SMEs and contractors. Perfect for business financial analysis.

• VAT Calculator
• ROI Calculator
• Tax Calculator

Specialised Calculators

UK benefits, compliance & niche calculators

UK benefits calculators including Universal Credit, Child Benefit, statutory pay, holiday entitlement, and minimum wage compliance tools.

• Area Calculator
• Statistics Calculator
• Physics Solver