How earnings per second are calculated

The counter on the front page is one division and a timer. Everything interesting about it is in the choice of denominator.

Round the clock

D = days in the year (366 in a leap year, otherwise 365)
incomePerSecond = annualIncome ÷ (D × 24 × 3,600)

Normal year: 31,536,000 seconds
Leap year:   31,622,400 seconds

This spreads your pay across every second of the year, sleep included. It produces a small number, and it is the honest one if the question is "what is a second of my life worth to my employer, on average".

Working hours

incomePerWorkSecond = monthlyIncome ÷ (workDaysPerMonth × paidHoursPerDay × 3,600)

Defaults: 22 days × 8 hours → 633,600 seconds

This divides by the hours you actually set, so the figure is several times larger. It answers a different question: what is a second at your desk worth.

Why the figures never disagree

The daily and weekly figures are not calculated separately. They are multiplied back up from the same per-second value, so they cannot drift apart from it.

perDay  = perSecond × (hours in the chosen day) × 3,600
perWeek = perDay × (days in the chosen week)

The counter also truncates towards zero rather than rounding. If the earned figure rounded up while the cost figure rounded down, the two would disagree with the net figure by a unit, and it would look like a bug every single time.

What the number is not

• It is not money arriving. Pay lands once, on payday.
• It is not an hourly wage for any legal purpose.
• It does not detect when you start or stop working — you start and pause the counter yourself.
• Refreshing the page resets it. Nothing is accumulating in the background.