How Our Calculators Work
Methodology
Salary to Hourly is built around one goal: make pay conversions predictable and transparent. Our calculators show the same math you’d do on paper—no hidden assumptions—so you can understand exactly how an annual salary becomes an hourly rate (and vice versa), how overtime is estimated, and how basic tax estimates are produced.
Where defaults are used (like a standard workweek), we make them explicit and let you adjust inputs. You can jump straight into the tools here: Salary to Hourly Calculator, Hourly to Salary Calculator, and Overtime Pay Calculator.
Our Approach
Every calculator on salarytohourly.com follows the same approach:
- Start with a clear formula (shown below for each conversion).
- Apply transparent defaults (such as typical weekly hours by country).
- Use gross pay figures unless you explicitly choose an after-tax estimate.
- Round sensibly for readability (for example, hourly rates shown to two decimals).
Salary to Hourly Conversion
To convert an annual salary to an hourly wage, we divide annual pay by the total working hours in a year.
Formula
Hourly Rate = Annual Salary ÷ (Hours per Week × 52)
Default assumption (US)
In the United States, our default work schedule is 40 hours per week. That implies:
- 40 hours/week × 52 weeks/year = 2,080 hours/year
Worked example
If you earn $60,000 per year and work the standard 40-hour week:
$60,000 ÷ 2,080 = $28.85/hour
This is exactly the math used in our Salary to Hourly Calculator. If you work a different schedule (for example, 37.5 hours/week, 32 hours/week, or 50 hours/week), changing the hours per week will update the total annual hours and the resulting hourly rate.
Gross (pre-tax) basis
Salary-to-hourly results are shown as gross pay by default. In other words, the hourly rate reflects earnings before federal/state taxes, payroll taxes, benefit deductions, retirement contributions, or any other withholdings.
Hourly to Salary Conversion
To convert an hourly wage to annual salary, we multiply the hourly rate by the expected hours worked per week and then by 52 weeks.
Formula
Annual Salary = Hourly Rate × Hours per Week × 52
Worked example
If you earn $25/hour and work 40 hours/week:
$25 × 40 × 52 = $52,000/year
This same approach powers our Hourly to Salary Calculator. If your weekly hours vary, you can input a different number of hours per week to reflect your expected schedule.
Country-Specific Adjustments
Weekly hours are not universal. Labor laws, common employment contracts, and cultural norms vary by country, which changes the most reasonable “default” assumption for annual hours. For example, some countries commonly use 37.5 hours/week (often representing 7.5-hour days), while others have higher statutory limits or more common long-week schedules.
Default hours by country
| Country | Default Hours/Week |
|---|---|
| United States (US) | 40 |
| United Kingdom (UK) | 37.5 |
| Australia | 38 |
| Canada | 40 |
| New Zealand (NZ) | 40 |
| Germany | 40 |
| India | 48 |
| Ireland | 39 |
| Singapore | 44 |
| South Africa | 45 |
| Japan | 40 |
| Philippines | 40 |
These defaults help you get a reasonable starting point quickly, but they are still assumptions. Many roles differ from national norms due to industry practices (healthcare, hospitality, finance), union agreements, or employment contract terms. Our calculators are designed so you can override the default weekly hours to match your real schedule.
Overtime Calculations
Overtime can materially change effective hourly pay and total earnings. Our overtime approach starts with a base hourly rate and applies a multiplier to the overtime portion of hours.
Formula
OT Rate = Base Rate × Multiplier
US default (FLSA-style assumption)
In the US, the common overtime rule for non-exempt employees is:
- 1.5× the base rate after 40 hours in a workweek
For example, if your base rate is $20/hour, a 1.5× overtime rate is $30/hour for overtime hours.
Our Overtime Pay Calculator lets you input base rate, overtime hours, and the multiplier (such as 1.5× or 2×). This makes it usable for schedules like four 10-hour days plus overtime, weekend premiums, or double-time arrangements where they apply.
Rules vary by country and classification
Overtime is not one-size-fits-all. Rules can differ based on:
- Country and local labor law (weekly thresholds, daily thresholds, mandatory premiums)
- Employment classification (exempt vs. non-exempt, salaried vs. hourly, contracted roles)
- Industry agreements (union contracts, shift differentials, holiday pay)
Because of that variation, our overtime calculations are best treated as a structured estimate using the inputs you provide, not a legal determination of overtime eligibility.
Tax Estimates
Some tools on salarytohourly.com provide an after-tax estimate to help you translate gross pay into an approximate take-home number. These estimates are designed for planning and comparisons, not for filing taxes.
What we use (US-focused simplified model)
- Simplified 2025 US federal tax brackets (see US Federal Tax Brackets)
- Standard deduction: $15,000 (single filer)
- FICA: 7.65% total payroll tax
- 6.2% Social Security
- 1.45% Medicare
How the estimate works (high level)
In plain terms, we:
- Start with gross annual pay.
- Subtract the standard deduction to estimate taxable income.
- Apply simplified federal bracket rates to estimate federal income tax.
- Apply FICA (7.65%) to estimate payroll taxes.
- Subtract estimated taxes from gross pay to produce an estimated net (take-home) amount.
Explicit limitations of our tax estimates
These are estimates, not precise tax calculations. In particular, our simplified model does not account for:
- State or local income taxes
- Tax credits (such as child tax credits, education credits)
- Itemized deductions (mortgage interest, charitable deductions, etc.)
- Pre-tax benefits (401(k) contributions, HSA/FSA, health insurance premiums)
- Filing statuses other than single (unless a calculator explicitly offers an option)
Assumptions and Limitations
Pay conversions require assumptions. Here are the key ones we use across the site unless you override them:
- 52 weeks per year are used in annualization (we do not subtract unpaid leave).
- No automatic reduction for paid holidays, vacation days, or sick time. (Many salaried roles still pay for these days, while some hourly roles may not.)
- Gross figures by default unless a result is explicitly labeled as after-tax or take-home.
- Tax estimates are federal/national only (US federal model where applicable) and intentionally simplified.
If you’re comparing job offers, these assumptions can change your “effective hourly rate.” For example, two jobs with the same salary can have meaningfully different effective hourly pay if one consistently runs 45–50 hour weeks or requires regular overtime.
Data Sources
We base our references and defaults on widely recognized public sources and documented standards:
- IRS guidance and publications for federal tax concepts and bracket references (summarized on our US Federal Tax Brackets page).
- Bureau of Labor Statistics (BLS) for general wage and earnings context used in educational content.
- Government labor departments and statutory guidance for country-specific working hour norms and labor standards used as default assumptions.
If you spot a default that doesn’t match common practice in your region or industry, the fastest fix is usually to adjust weekly hours in the calculator you’re using. You can start here: Salary to Hourly Calculator or Hourly to Salary Calculator.