From first sneakers to comfy slippers, add up every pair of your life. See lifetime pairs, total spend and how tall your shoeboxes would stack.
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A few pairs a year quietly turns into hundreds over a lifetime.
Cost per wear shows when a pricier, longer-lasting pair is the better deal.
Billions of pairs are thrown away each year; buying fewer, better shoes adds up.
Children outgrow shoes quickly, so the calculator uses a separate yearly rate from birth to age 18 and an adult rate after that. Pairs so far cover the years from birth to your current age, and pairs ahead cover your age to your life expectancy. Total spending multiplies pairs by your average price.
The shoebox tower assumes a standard box about 12 centimeters tall, and the weight assumes around 0.9 kilograms per pair, which is typical for adult sneakers; boots weigh more and sandals less. Industry estimates suggest people in many countries buy several pairs per year on average, so the defaults are a middle-of-the-road starting point.
Growing feet mean more pairs per year in childhood.
12 cm per box, compared with landmarks around the world.
Price divided by the days each pair gets worn.
Estimates vary by country, but many sources put it at several pairs per person per year in wealthier countries. Adjust the numbers to match your habits.
Count whatever you like. Include them in your yearly rate if you buy them regularly.
Kids' feet grow fast, so they often need new shoes every few months regardless of wear.
The price of a pair divided by how many days you wear it. A durable pair worn often can be cheaper per wear than a bargain pair worn rarely.
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