The table generated by our simulator compares, item by item, the actual cost of using washable nappies versus disposable nappies over a three-year period.
This comparison of washable nappies highlights the possible savings, but also the impacts related to the consumption of water, energy and raw materials.
Each line details the main items: the price of the initial Berceau® washable nappy kit, the cost of washes (short and long cycles) and the cumulative total over three years.
In contrast, disposable nappies include an average cost of €0.27 per unit — according to ADEME 2025 data — for approximately 6,000 changes per child.
At a glance, you can see the budget difference : washable nappies become cost-effective from the first months of use, and their costs decrease even further if they are reused for a second child.
On the scale of a daycare center, the impact is even clearer: pooling washing reduces energy expenditure and the amount of waste generated.
Finding the right balance between washing, budget and durability
Washing every day may seem, at first glance, the most economical solution: fewer diapers to buy, less stock to manage and a quick turnover.
However, this approach is less relevant in the long term . Daily washing puts more stress on the fibers, elastics and PUL, which wears out the material more quickly and reduces its lifespan.
As a result, these diapers may not be fully reusable for a second child.
The most balanced washing schedule is every 2 to 3 days . This allows the diapers time to dry properly, the elastics retain their flexibility, and energy costs remain moderate.
It's the best compromise between economy, ease of use and durability .
Conversely, owning a larger stock for washing only once a week requires a higher initial investment.
But if you plan to use these diapers for several children , this option becomes remarkably cost-effective :
A well-maintained washable nappy can be used for 2 or 3 babies , thus dividing the overall cost and the ecological footprint.
The true cost of disposable diapers
Over three years, a child in disposable diapers produces nearly a ton of non-recyclable waste , or about 5,000 diapers thrown away.
These volumes are then incinerated or buried, generating a considerable environmental and financial cost.
More and more communities are applying pricing based on weight or collection of household waste .
In these communities, every kilogram of disposable diapers increases the household bill.
Choosing washable nappies therefore means reducing both your waste and your future expenses.
Beyond the cost savings, switching to washable products represents a powerful gesture:
It limits pollution linked to cellulose, hydrocarbons and plastics from disposable diapers,
while promoting more circular and responsible consumption.
Support to facilitate the transition to washable products
Many local authorities now offer a subsidy for the purchase of washable nappies , up to €200.
Check out our
interactive map of subsidies
to find out what assistance is available near you.
To go further, also try our
Calculator for the right number of washable nappies : it complements this simulator by helping you estimate the ideal stock according to your washing frequency and budget.
