United Kingdom
Calculators using British and NHS standards
The NHS uses WHO BMI thresholds (overweight ≥25, obese ≥30) but recommends lower intervention thresholds for South Asian, Chinese, Black African and Caribbean groups, effectively applying Asia-Pacific standards.
UK mortgages fix for 2, 3, 5, or 10 years — then revert to the lender's SVR or remortgage. The 30-year fixed doesn't exist in the UK. Most are repayment mortgages with 25-year terms.
UK banks disclose AER (Annual Equivalent Rate), standardized by the FCA to assume annual compounding. This is equivalent to the US APY. Cash ISAs are tax-free savings accounts unique to the UK.
UK tax is distinctive: you pay both income tax (20%/40%/45%) AND National Insurance contributions (Class 1). NI is a separate payroll deduction that funds the NHS and state pension.
The UK NHS uses the Schofield equation for clinical nutrition. It was adopted in UK dietary reference values and is used for hospital nutrition assessments and dietetic practice.
Tipping in the UK is appreciated but not obligatory. UK wait staff earn the national minimum wage (~£11.44/hour in 2024) so tips supplement rather than replace income. Many restaurants add a 12.5% service charge automatically.
UK personal loan rates average 8–9% APR for good credit — generally lower than US rates. Early repayment charges are capped under the Consumer Credit Act at 1–2 months' interest.
UK universities don't use GPA. Degrees are classified as First Class (≥70%), Upper Second 2:1 (60–69%), Lower Second 2:2 (50–59%), or Third (40–49%). A 2:1 is the standard expected by most graduate employers.
What Makes UK Standards Unique?
- National Insurance: The UK's NI system is separate from income tax but equally significant. Combined, basic-rate taxpayers pay ~32% on earnings above the personal allowance (income tax + NI) — higher than the headline 20% income tax rate suggests.
- AER vs APY: The UK uses AER (Annual Equivalent Rate) for savings, mandated by the FCA. This is identical to APY — both show the true annual return including compounding effects.
- Stone as a weight unit: The UK uniquely uses stone (14 lbs) alongside kilograms. Most British people know their weight in stone and pounds (e.g. "11 stone 4"). Metric is official but imperial is culturally entrenched.
- Shorter mortgage terms: 5-year fixed-rate deals are the UK's most popular mortgage product. This means UK homeowners face rate uncertainty more often than US homeowners with 30-year fixes.
- Degree classification: A UK First Class degree is roughly equivalent to a US GPA of 3.7–4.0. A 2:1 corresponds to about 3.3–3.6.