Overtime Calculator
Calculate your overtime pay quickly and accurately
Shown with £ — works for any currency symbol on your payslip
How it works
Overtime pay is compensation for hours worked beyond a standard workweek. Many employers pay extra for those hours using a multiplier on your regular hourly rate. The most common rates are time and a half (1.5× your base rate) and double time (2× your base rate), though the exact multiplier depends on your employer, role, and when the extra hours are worked.
Overtime rules and entitlements vary significantly by country, industry, and individual employment contract. Some workers have a statutory right to enhanced pay above a weekly hour threshold; others rely entirely on what their contract states. This calculator is for general arithmetic only — it is not a substitute for checking your specific contractual or legal entitlements with your employer or a qualified adviser.
Clockr splits your week into regular and overtime portions automatically. Regular hours are capped at your standard hours per week (default 40). Any hours above that threshold count as overtime and are multiplied by your chosen rate before being added to your regular pay for a weekly total.
Frequently asked questions
How is overtime pay calculated?
Overtime pay is typically calculated by multiplying your regular hourly rate by an overtime multiplier (such as 1.5 or 2), then multiplying that enhanced rate by the number of overtime hours worked. Regular pay covers hours up to your standard week; overtime pay covers only the hours beyond that threshold. Total weekly pay is the sum of both amounts.
What is time and a half?
Time and a half means your hourly rate multiplied by 1.5. If you earn £20 per hour, time and a half is £30 per hour for each qualifying overtime hour. It is one of the most widely used overtime multipliers, though not every employer or jurisdiction applies it in the same way.
What is double time?
Double time means your hourly rate multiplied by 2. A £20 hourly rate becomes £40 per overtime hour at double time. Some employers offer double time for Sundays, public holidays, or hours beyond a second weekly threshold — but this varies widely and is often set out in employment contracts or collective agreements.
Is overtime pay required by law?
It depends on where you work and your employment status. Some countries mandate overtime premiums for eligible employees above certain hour limits; others leave overtime pay to individual contracts. Exempt salaried roles, contractors, and part-time arrangements may be treated differently. Check your local employment rules and your contract for what applies to you.
How many hours is considered overtime?
The overtime threshold is not universal. In the United States, 40 hours per workweek is a common federal benchmark for many non-exempt employees. In the UK and elsewhere, there is often no single statutory weekly limit — overtime may begin after your contracted hours, which could be 35, 37.5, 40, or another figure. Set your standard hours in the calculator to match your own schedule.
Does overtime pay vary by industry or country?
Yes. Healthcare, hospitality, transport, and public-sector roles often have different overtime rules from office-based work. Countries differ in whether overtime is legally required, how the threshold is defined, and whether premiums apply on weekends or holidays. Union agreements and company policies can add further variation — always confirm the rate and rules that apply to your situation.