Pack Lunch vs Buy Calculator
Example: Cost of a bought lunch: 14 $ · Cost of a packed lunch: 3.5 $ · Work days per week: 5 days · Work weeks per year: 48 weeks
| Weekly savings | $53 |
| Annual savings | $2,520 |
| Annual spend if always buying | $3,360 |
Worked example
A $14 bought lunch versus a $3.50 packed one saves $10.50 a day. Over five workdays that is $52.50 a week, and across 48 working weeks about $2,520 a year. Buying every workday lunch, by contrast, would cost roughly $3,360 a year in total. Packing even three days a week and buying two still banks well over $1,500 annually — a rare budget win that takes minutes a day.
Frequently asked questions
What should I count as the cost of a packed lunch?
Use the per-serving cost of what you actually pack — leftovers, a sandwich, or a grain bowl. Most packed lunches land between $2 and $5 a serving, especially if they use dinner leftovers you already paid for. Packing from leftovers can push the effective cost even lower.
Does buying lunch really cost that much a year?
It adds up faster than people expect. At $12 to $15 a day across a full work year, bought lunches routinely run $3,000 or more. Because each purchase is small, the annual total is the figure that tends to prompt a change, which is why this tool surfaces it.
How do I make packing sustainable?
Lean on planned leftovers, batch-prep a few lunches at once, and keep a couple of no-cook backups like tuna or overnight oats for busy mornings. The habit only saves money if it survives tired weeks, so build in options that require almost no effort.
What if I enjoy going out for lunch?
Then keep the meals that matter and cut the ones that are just convenience. Set the days-per-week input to how often you truly want to buy lunch; even a couple fewer bought lunches a week captures most of the annual savings without eliminating the social ones.