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United Kingdom Tools & Reference
9 tools, 1 reference page — Reference pages for UK tax rates, allowances, and statutory thresholds — reviewed periodically and linked to the relevant free calculator.
Every calculator, converter, and validator below is built around UK rules — Income Tax and National Insurance bands, personal allowance tapering, and council tax structure — instead of generic global defaults. Reference pages track the underlying rates and thresholds separately, so a Budget update doesn't require touching every calculator that uses it.
United Kingdom Specific Tools
Everyday
converter
Stone to Kilograms Converter
Convert body weight from stone (st) to kilograms (kg), pounds, or grams instantly — the UK and Ireland's standard weight unit, converted with exact precision.
converter
Stone to Pounds Converter
Convert body weight from stone (st) to pounds (lbs) or kilograms instantly — the exact 14 lb per stone relationship used across the UK and Ireland.
Finance
validator
UK National Insurance Number Validator
Validate a UK National Insurance Number (NIN) format instantly. Checks letter restrictions, reserved prefixes, and suffix rules — entirely in your browser.
validator
VAT Number Validator
Validate VAT numbers for all 27 EU countries plus UK, Norway, and Switzerland. Per-country format rules with checksum for DE and NL. Instant, browser-only.
Tax
calculator
UK Council Tax Calculator
Calculate your annual and monthly UK Council Tax bill from your band and council's Band D rate, including the 25% single-person discount if it applies.
calculator
UK Stamp Duty Calculator
Calculate UK Stamp Duty Land Tax (SDLT) on your property purchase instantly. Covers first-time buyer relief and the additional property surcharge.
calculator
UK Take-Home Pay Calculator
Calculate your UK net take-home pay after Income Tax, National Insurance, pension contributions, and student loan repayments for the 2024/25 tax year.
calculator
VAT Calculator
Add VAT to a net price or remove VAT from a gross price instantly. Supports any VAT rate. Free online VAT calculator for UK, EU, and global use.
Rates & Reference
United KingdomArticles & Guides
United Kingdom Worked Examples
Frequently Asked Questions
Are the UK-specific calculators free to use?
Yes. Every calculator, converter, and validator on this page is free, requires no sign-up, and runs entirely in your browser.
Do these calculators account for National Insurance as well as Income Tax?
Where relevant, yes — UK salary and take-home pay calculators factor in National Insurance bands alongside Income Tax, not Income Tax alone.
How current are the tax rates and thresholds shown here?
Reference pages show a "data as of" date and a review cadence (monthly, quarterly, or annual) so you can judge freshness at a glance. Always confirm figures with HMRC or an official source before making a financial decision.
Can I share a calculation with someone else?
Yes — every input is written to the page URL as you type, so copying the link shares the exact calculation, no account or export step needed.