Salary Calculator UK: Hourly vs Salaried – Which Offer Is Better?

When you're comparing job offers, one might quote an hourly rate while another gives an annual salary. A salary calculator UK helps you convert between the two, but you also need to understand how your take-home pay stacks up against national benchmarks. This guide uses official data from the ONS, GOV.UK, and NHS pay scales to help you make an informed decision.

The Basic Conversion Formula

The standard conversion used by employers and HMRC is:

Annual gross salary = hourly rate × contracted hours per week × 52 weeks

For example, if you're offered £15 per hour for a 37.5-hour week: £15 × 37.5 × 52 = £29,250 gross per year.

If the offer is an annual salary of £30,000, the equivalent hourly rate at 37.5 hours per week is: £30,000 ÷ (37.5 × 52) = £15.38 per hour.

Some calculators use 52.14 weeks (365.25 ÷ 7), but the difference is less than £40 per year on minimum wage – negligible for most comparisons. Our hourly calculator uses the 52-week standard for consistency with PAYE.

UK Wage Benchmarks from ONS ASHE 2025

The Office for National Statistics (ONS) Annual Survey of Hours and Earnings (ASHE) provides the most authoritative picture of UK pay. For April 2025:

• Median weekly earnings for full-time employees: £766.60 (up 5.3% on the year)
• Median gross annual earnings for full-time employees: £39,039 (up 4.3% from £37,439)
• Median hourly earnings (excluding overtime) for full-time employees: £19.67

These figures are provisional and include employees who have been in their job for at least a year. They are a useful benchmark when evaluating whether an hourly rate or salary offer is competitive.

National Living Wage and Minimum Wage (2026/27)

From April 2026, the government's National Living Wage (NLW) for employees aged 21 and over is £12.71 per hour. At 37.5 hours per week, that equates to: £12.71 × 37.5 × 52 = £24,784.50 gross per year.

For younger workers:

• 18–20 years: £10.85 per hour
• 16–17 years and apprentices: £8.00 per hour

There is also a voluntary Real Living Wage (calculated by the Living Wage Foundation) of £13.45 per hour UK-wide and £14.80 in London for 2025-26. Many employers sign up to this, so it's worth checking if a job advert mentions it.

Comparing Hourly Jobs with Salaried Offers: A Practical Example

Suppose you have two offers:

Offer A: £15 per hour, 37.5 hours/week, no overtime guaranteed. Offer B: £30,000 per year, 37.5 hours/week, with occasional paid overtime.

Using the conversion:

• Offer A annual gross: £29,250
• Offer B hourly equivalent: £15.38

On the surface, Offer B pays slightly more per hour. But you also need to consider:

• Overtime: If Offer A pays time-and-a-half for extra hours, you could earn more overall.
• Benefits: Salaried roles often include pension contributions, sick pay, and holiday entitlement that hourly jobs may not.
• Stability: A salaried contract typically guarantees a minimum number of hours; hourly work may fluctuate.

Use our salary articles for deeper comparisons of total compensation.

NHS Pay Scales as a Benchmark (2026/27)

The NHS is one of the UK's largest employers and its pay scales are often used as a reference. For 2026/27, effective from 1 April 2026:

• Band 6 (e.g., senior nurses, paramedics): £20.44 per hour (entry step point). Annual salary at 37.5 hours/week: approximately £39,858.
• Band 5 (newly qualified nurses): lower rates, typically around £17–18 per hour.

NHS roles in London attract Higher Cost Area Supplements (HCAS), which add a percentage to basic pay. For example, outer London HCAS is 20% of basic salary, subject to a minimum payment of £5,794 and maximum of £8,746. This can significantly boost take-home pay.

London Weighting and Regional Differences

A salary calculator UK should account for location. The ONS data shows that median earnings in London are substantially higher than the UK average – often 25–30% more. However, living costs (especially housing) are also higher. When comparing hourly jobs, check whether the employer offers a London weighting or cost-of-living allowance.

For example, a £15 per hour job in Manchester may go further than a £18 per hour job in central London after rent and travel. Always factor in the regional cost of living.

Tax and National Insurance Considerations

Your take-home pay depends on your tax code, pension contributions, and student loan repayments. For the 2026/27 tax year:

• Personal Allowance: £12,570 (tax-free)
• Basic rate: 20% on income between £12,571 and £50,270
• National Insurance: 8% on earnings between £12,570 and £50,270 (Class 1, employee)

Using the NLW example (£24,784.50 gross):

• Income tax: approximately £2,443
• National Insurance: approximately £977
• Net annual: £21,364.44 (monthly take-home: £1,780.37)

Our hourly calculator includes these deductions for England, Wales, and Scotland.

Key Takeaways for Job Seekers

• Always convert both offers to the same unit (hourly or annual) using the 52-week formula.
• Compare against national benchmarks: median £39,039, NLW £24,784.50, NHS Band 6 ~£39,858.
• Consider overtime, benefits, and location – not just the headline rate.
• Use a reliable salary calculator UK to see your true take-home pay after tax and NI.

For more detailed data and articles, visit our salary data page and topics section.