Think in months, the way bills work
Rent is monthly. Most subscriptions are monthly. Freelance retainers are monthly. Yet pay is usually quoted annually (salaries) or hourly (contracts), which makes it oddly hard to answer a simple question: what lands each month?
This calculator converts any pay figure into its monthly equivalent — salary to monthly, hourly to monthly, day rate to monthly — and works in reverse for freelancers setting a monthly retainer: enter the monthly fee you want and see what it means per hour of work you will actually do.
How to use it
- Enter your pay figure and choose its unit: annual salary, hourly rate or daily rate.
- Enter your working pattern: hours or days per week, and weeks per year.
- Read the monthly gross figure plus the full conversion table (weekly, monthly, annual).
- Freelancers: flip to retainer mode — enter your target monthly income and your expected monthly hours to get the effective hourly rate behind a retainer quote.
What it calculates and how the formula works
| Conversion | Formula |
|---|---|
| Salary → monthly | Annual salary ÷ 12 |
| Hourly → monthly | Hourly rate × hours per week × 52 ÷ 12 |
| Daily → monthly | Day rate × billable days per year ÷ 12 |
| Retainer → effective hourly | Monthly retainer ÷ expected hours worked that month |
Assumptions:
- Monthly figures are gross (before tax). A year has 12 equal months; the tool does not adjust for months with different working days.
- The common shortcut “annual ÷ 12” is exact for salaried employees. For hourly workers, the tool uses the 52-week annualisation (hours × 52 ÷ 12), which is slightly more than 4× the weekly figure — a real difference of about 8%.
- Retainer mode divides by the hours you enter. Be honest about scope: retainers that quietly expand to 60 hours a month at a 40-hour price are how freelancers end up underpaid.
Worked example: the retainer quote
Elena is a social media manager in Austin. A client wants her on retainer. She wants to earn $4,500 a month from this client and expects the work to take about 45 hours a month:
- Effective hourly rate: $4,500 ÷ 45 = $100/hour
- Annualised: $4,500 × 12 = $54,000/year from this client
- Sanity check against her freelance rate: her minimum viable rate from the freelance rate calculator is $85/hour, so $100/hour leaves a healthy margin for scope creep.
She quotes $4,500/month with the scope defined as “up to 45 hours; additional hours at $100/hour.” The retainer looks simple to the client and is mathematically sound for her.
Important considerations and limitations
- Monthly pay ≠ monthly cash flow. Salaried employees get 12 equal payslips; freelancers on monthly retainers get paid when clients pay. Invoice promptly and set payment terms (net 15 or net 30) to keep the months actually equal.
- Gross, not take-home. Tax, social charges and deductions vary by country and income. This tool converts pay units; it does not compute net income.
- Retainers need boundaries. A monthly fee without an hours cap or scope definition is an unlimited-liability contract. Always pair the number with scope terms.
- The 4-week shortcut is wrong. Four weeks is 28 days; the average month is 30.4 days. Hourly workers who multiply by 4 underestimate monthly income by roughly 8%. This tool uses the correct 52÷12 annualisation.
- Browser-local: your pay figures never leave your browser.
Frequently asked questions
How do I convert an annual salary to monthly pay?
Divide by 12. A $60,000 salary = $5,000/month gross. A £36,000 salary = £3,000/month gross. Simple — but remember this is before tax.
How much is $50 an hour per month?
At 40 hours a week: $50 × 40 × 52 ÷ 12 = $8,667/month gross. At 37.5 hours: $8,125/month.
How do I set a freelance monthly retainer rate?
Decide the monthly income you want from the client, estimate the hours the work will take, and divide. Then add 15–20% as a buffer for scope creep. Always define the scope and the hourly rate for overage.
Is a monthly retainer better than hourly billing?
Retainers give predictable income and fewer invoices; hourly billing pays you for every hour. Retainers win when the scope is stable and the client relationship is long-term. Hourly wins when scope is uncertain.
Why is monthly pay not simply 4× weekly pay?
Because months average 4.33 weeks, not 4. Using 4× understates monthly income by about 8%. This calculator uses the correct annualised figure.
Does this include tax?
No. All figures are gross. Use your country’s tax tools or an accountant to estimate take-home pay.
Is my data uploaded anywhere?
No. Calculations run entirely in your browser.
Related tools
External references
- US Department of Labor — Wages and the Fair Labor Standards Act
- GOV.UK — Maximum weekly working hours
- IRS — Estimated taxes for the self-employed
This tool provides estimates for guidance only and is not professional financial, tax, or legal advice.