Understanding the Conversion from Hourly to Annual Salary

When you see a job advert quoting an hourly rate, it can be helpful to work out what that means as an annual salary – especially when comparing offers or budgeting your take home pay. In the UK, the standard conversion used by employers and HMRC is straightforward: multiply your hourly rate by your contracted hours per week, then by 52 weeks.

For example, if you earn £15 per hour and work 37.5 hours each week, your gross annual salary is:

£15 × 37.5 × 52 = £29,250

This is the figure that appears on your payslip before any deductions. From there, your take home pay depends on income tax, National Insurance, pension contributions, and any other deductions like student loans or salary sacrifice.

Why 52 weeks and not 52.14?

Some calculators use 52.14 weeks (based on 365.25 days ÷ 7), but the PAYE system runs on 52 weeks. The difference is tiny – less than £40 per year on the National Living Wage – so you can safely use 52 weeks for planning.

Current UK Benchmarks: Hourly and Annual Earnings

The most authoritative source for UK earnings is the Office for National Statistics' Annual Survey of Hours and Earnings (ASHE). For April 2025, the median gross annual earnings for full-time employees were £39,039, and the median hourly earnings (excluding overtime) were £19.67. However, the annual figure includes overtime and other payments, so converting the median hourly rate directly (e.g., £19.67 × 37.5 × 52 = £38,367) gives a slightly lower number. This shows why it's important to understand what your contract includes.

National Living Wage and Minimum Wage (2026/27)

From 1 April 2026, the National Living Wage for workers aged 21 and over rises to £12.71 per hour. At 37.5 hours per week, that gives a gross annual salary of £24,784.50. After income tax and National Insurance (using the standard 1257L tax code, no pension or student loan), your take home pay is approximately £21,364.44 per year, or £1,780.37 per month. For 18–20 year olds, the minimum wage is £10.85 per hour.

NHS Pay Scales 2026/27

The NHS publishes annual and hourly pay scales for its staff. For 2026/27, the entry rate for Band 1 (closed to new entrants) is £12.92 per hour. Band 2 starts at around £13.00 per hour. These rates include Higher Cost Area Supplements (HCAS) for London and surrounding areas, which can add up to 20% of basic salary. When converting an NHS hourly rate to annual salary, remember to include any HCAS if applicable.

The Role of Overtime and London Weighting

Your hourly rate is the base, but actual earnings can be higher if you regularly work overtime. Overtime is often paid at a premium (e.g., time-and-a-half or double time). Similarly, London weighting – an additional allowance for working in high-cost areas – can boost your annual income significantly. Always check your contract for these details.

For a more precise calculation tailored to your situation, use our hourly calculator to see your estimated take home pay after tax and NI. You can also explore our salary data for industry and regional benchmarks.

Summary

Converting an hourly rate to an annual salary is simple: rate × hours per week × 52. But to understand your true take home pay, you need to factor in tax, NI, and any additional payments like overtime or London weighting. The UK median full-time salary sits around £39,000 gross, while the National Living Wage provides a baseline of £24,784.50 for a full-time worker. Use official sources like ONS and GOV.UK for the latest rates, and always check your contract for the exact terms.