Effort Calculator: What % of your salary does this cost?

Effort calculator: decide if it is worth the cost

Knowing the number of work hours an item costs helps you compare purchases and prioritize savings goals.

How does it work?

The calculator uses simple formulas to map out equivalent work quantities and relative impact scaling based around income profiles and an item base price.

Let $P$ be item price, $H_w$ work hours per day, and $D_w$ billable days per month.

Effective Hourly Wage ($W_h$)

If hourly wage given, $W_h$ is used directly.

If monthly wage ($W_m$) is given, we find: $$W_h = \frac{W_m}{H_w \times D_w}$$

Hours and Days Required

Hours Required ($H_{req}$): $$H_{req} = \frac{P}{W_h}$$

Days Required ($D_{req}$): $$D_{req} = \frac{H_{req}}{H_w}$$

Monthly Salary Impact ($I_m$)

Base assumed wage derived if only hourly was inputted:

Calculated Monthly Wage ($W_m$): $$W_m = W_h \times H_w \times D_w$$

Impact Percentage: $$I_m = \left(\frac{P}{W_m}\right) \times 100$$

Note: Calculations assume net-positive income, ignoring separate tax variances unless they are subtracted straight from the hourly/monthly input.