Converting pay between yearly, monthly, weekly and hourly
Pay is quoted in whatever unit suits whoever is quoting it. This calculator takes your pay once, in any frequency, and shows the equivalent amounts before and after Income Tax and National Insurance.
Figures stated for the 2026/27 UK tax year. Content last checked against official sources on .
What this calculator does
- Converts a single pay figure into yearly, monthly, weekly and hourly equivalents.
- Shows both gross and net figures, so job offers quoted in different units can be compared directly.
- Applies 2026/27 Income Tax and employee National Insurance for your jurisdiction.
- Uses your stated hours per week and paid weeks per year to derive the hourly figures.
- Does not model pension contributions or student loans.
How the calculation works
Whatever you enter is first normalised into a single annual gross figure, using your working pattern where the conversion needs it. Income Tax is then computed by applying the Personal Allowance and the statutory bands for your jurisdiction, and employee Class 1 National Insurance is charged on earnings above the £12,570 primary threshold at 8%, dropping to 2% above the £50,270 upper earnings limit. Subtracting both from gross annual pay gives net annual pay. Every periodic figure is then derived from those annual totals by division: monthly is the annual figure divided by twelve, weekly by the paid weeks you entered, hourly by paid weeks multiplied by hours per week. Deriving the periods from the annual result, rather than taxing each period separately, is what keeps the four rows internally consistent with one another — and it is also precisely why the output is an annual estimate rather than a payslip reproduction.
The rule
Net annual = gross annual − Income Tax − Class 1 National Insurance. Hourly = annual ÷ (paid weeks × hours per week).
Step by step
- Convert the pay you entered into an annual gross figure.
- Apply the Personal Allowance and the Income Tax bands for your jurisdiction.
- Charge National Insurance at 8% between £12,570 and £50,270, then 2% above.
- Subtract both deductions to give net annual pay.
- Divide the annual figures into monthly, weekly and hourly equivalents.
Worked example
Tom is offered £42,000 a year for a 37.5-hour week and wants to know what that is per month and per hour after tax and National Insurance.
What was entered
| Pay amount | £42,000 |
|---|---|
| Income frequency | Annual |
| Hours per week | 37.5 |
| Paid weeks per year | 52 |
| Jurisdiction | England/Wales/NI |
The arithmetic
- £42,000 a year is £3,500 a month and £21.54 an hour across 52 weeks at 37.5 hours.
- Taxable income is £42,000 − £12,570 = £29,430, all inside the basic rate band, so Income Tax is 20%: £5,886.
- National Insurance is charged on the same £29,430 of earnings above the primary threshold at 8%: £2,354.40.
- Net annual pay is £42,000 − £5,886 − £2,354.40 = £33,759.60.
- That is £2,813.30 a month, £649.22 a week, and an effective £17.31 an hour.
What the calculator returns
| Gross pay for the year | £42,000.00 |
|---|---|
| Gross hourly rate | £21.54 |
| Income Tax | £5,886.00 |
| National Insurance | £2,354.40 |
| Net pay for the year | £33,759.60 |
| Net hourly equivalent | £17.31 |
Key assumptions
- The standard position is assumed: one job, the full Personal Allowance, no other income.
- Employee Class 1 National Insurance at category A is applied.
- The working pattern you enter is treated as representative of the whole year.
Limitations
- Hourly and weekly equivalents are only as good as the working pattern you enter — unpaid overtime is invisible to the calculator and makes your real hourly rate lower.
- Pension contributions and student loan repayments are not deducted here.
- Employer National Insurance is a cost to your employer, not a deduction from your pay, and is not shown.
- Periodic figures divide an annual result and will not match a payslip to the penny.
Common questions
Is the hourly figure my real hourly rate?
Should I enter 52 paid weeks?
Does it matter which frequency I enter my pay in?
Related calculators
- Take-Home Pay Calculator — Adds pension arrangements, student loans and tax codes for a fuller take-home figure.
- Hourly to Salary Calculator — Start from an hourly rate instead and convert upwards to an annual salary.
- National Insurance Calculator — Look at the National Insurance component on its own.
Official sources
Every figure in this guide was checked against the sources below. Where a source could not confirm a figure, it is marked as requiring verification rather than presented as settled.
- Income Tax rates and Personal Allowances — GOV.UK (6 April 2026 to 5 April 2027)Personal Allowance £12,570; basic 20% to £50,270; higher 40% to £125,140; additional 45% above; taper from £100,000
- National Insurance rates and categories — GOV.UK (2026 to 2027)Category A employee Class 1: nothing to £242 a week, 8% to £967 a week, 2% above
- Income Tax in Scotland — GOV.UK (2026 to 2027)Scottish bands: starter 19%, basic 20%, intermediate 21%, higher 42%, advanced 45%, top 48%