Compare packed lunches against school meals over a school year.
Both options are priced per child per day, then scaled by school days and the number of children. The difference, repeated over roughly forty school weeks, is the annual saving from packing lunch. Kids' lunches are bought five days a week, so small per-day differences compound into hundreds of dollars a year and a habit of comparing unit costs early.
Packed vs School Lunch
Weekly = cost per day x days x children; school-year savings = difference x 40 weeks
Weekly = cost per day x days x children; school-year savings = difference x 40 weeks Both options are priced per child per day, then scaled by school days and the number of children. The difference, repeated over roughly forty school weeks, is the annual saving from packing lunch.
Kids' lunches are bought five days a week, so small per-day differences compound into hundreds of dollars a year and a habit of comparing unit costs early.
This calculator takes 4 inputs: Packed lunch per day, School lunch per day, Days per week, Number of children. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.