Free UK Calculators for Finance, Tax, Benefits & Health
100+ accurate tools: Mortgage, Tax, Universal Credit, PIP, Pension, Student Loans, BMI and more — built for the UK, updated for 2026.
Why 500,000+ UK Users Trust CalcUK
💷 UK Tax & Benefits Experts
Calculate Universal Credit, PIP eligibility, Child
Benefit, and Tax Codes with 2025/26 rates. Our benefit calculators help
thousands of families understand their entitlements.
🏠 Property & Mortgage Tools
From Stamp Duty to Mortgage repayments to Rent vs Buy
analysis — make informed property decisions with UK-specific calculations.
🎓 Student Finance
Plan 1, Plan 2, Plan 5 loan calculators. Understand repayment thresholds, interest rates, and whether to
overpay your student loan.
🏦 Retirement & Pension Planning
Project your pension pot, calculate National Insurance contributions, and understand how
tax relief boosts your retirement savings.
❤️ Health & Fitness
BMI, Body Fat,
Calorie needs, Sleep Cycles and more. Science-backed tools for your
wellness journey.
⚡ 100% Free, No Sign-Up
Every calculator is completely free. No registration, no data collection, no hidden costs. Just fast,
accurate answers.
💷 UK Tax & Benefits Experts
Calculate Universal Credit, PIP eligibility, Child Benefit, and Tax Codes with 2025/26 rates. Our benefit calculators help thousands of families understand their entitlements.
🏠 Property & Mortgage Tools
From Stamp Duty to Mortgage repayments to Rent vs Buy analysis — make informed property decisions with UK-specific calculations.
🎓 Student Finance
Plan 1, Plan 2, Plan 5 loan calculators. Understand repayment thresholds, interest rates, and whether to overpay your student loan.
🏦 Retirement & Pension Planning
Project your pension pot, calculate National Insurance contributions, and understand how tax relief boosts your retirement savings.
❤️ Health & Fitness
BMI, Body Fat, Calorie needs, Sleep Cycles and more. Science-backed tools for your wellness journey.
⚡ 100% Free, No Sign-Up
Every calculator is completely free. No registration, no data collection, no hidden costs. Just fast, accurate answers.