How many washable diapers should I buy?

pack couche lavable
Couche lavable Berceau en location
couche lavable berceau vue interieur

Personalized simulator: parents, childminders and nurseries

This unique simulator in France , Ma Boule De Couches®, automatically determines the exact number of washable diapers and inserts needed based on your situation: parent, childminder, or group childcare setting. The calculation takes into account the child's age, the number of diaper changes, the washing frequency, and your actual daily needs.

For parents, the tool accurately assesses the number of diaper changes, daily bowel movements, the recommended safety margin, and the impact of your washing schedule. You get a personalized ideal stock for simple and seamless use of cloth diapers.

For childminders, the simulator takes into account the number of children in their care , their respective ages, and their individual needs. It automatically calculates the total volume of diapers required to ensure continuous and perfectly organized operation.

For nurseries and childcare facilities, the tool analyzes group parameters to provide a reliable estimate adapted to professional constraints.

Unlike general recommendations found online, this simulator provides an accurate, realistic, and completely personalized estimate based on your habits and washing frequency. A tool designed to simplify the use of cloth diapers, whatever your situation.
Understanding how to calculate the correct number of layersView the packages

New to cloth diapers? Discover our complete guide to get started at a glance.

Calculate how many cloth diapers you truly need

Estimate the ideal number of cloth diapers based on your profile: parent, childminder or nursery. The calculator adapts to your wash routine, organisation and daily needs.

Start your personalised calculation

Enter your wash habits and change frequency. The tool computes the ideal stock for a smooth, stress-free routine.

Why use this calculator?

  • Suitable for all profiles: parents, nurseries, childminders.
  • Takes into account wash frequency and tumble dryer use.
  • Includes a buffer stock to manage unexpected situations.

A simple, reliable and accurate tool to plan your cloth diaper routine and avoid underestimating your needs.

A simple and effective tool

Indicate your needs below and immediately discover the perfect quantity of cloth diapers for you.

The calculator

Select your profile

"Our calculator takes into account actual usage: bowel movements require a clean diaper, while a simple pee allows you to reuse the Cradle diaper up to three times a day. We have added a safety margin to anticipate unforeseen events (like gastro episodes) as well as the drying time of the inserts, in order to offer you a reliable and worry-free estimate"

How is the number of cloth diapers calculated?

Your result is based on real data and a simple calculation method:

  1. Baby’s age → suggests a range of changes/day and a reference for poops/day.
  2. Your settings → you adjust changes/day (1→15) and poops/day (0→6) to fit real life.
  3. Washing frequency + drying time → determines how many days must be covered.
  4. Safety margin (default +15%) → adds a buffer for unforeseen situations.
Show the logic as a formula

Days to cover (inserts) = days between washes + insert drying time

Days to cover (covers) = days between washes

Insert stock = changes/day × days (inserts) × (1 + margin)

Cover stock (used once then washed) = changes/day × days (covers) × (1 + margin)

Berceau cover stock = ⌈(urine/day × days ÷ 4) + (poops/day × days)⌉ × (1 + margin)
“÷ 4” = the same cover can be reused up to 4 times if only urine is present.

Daily reference by age
Baby’s age Changes / day Poops / day Notes
0–1 month8–12≈ 3Frequent feeds; very regular changes.
1–3 months7–10≈ 2Intervals become slightly longer.
3–6 months6–8≈ 2Routine settles; sometimes longer nights.
6–12 months5–7≈ 1Weaning; baby more active.
12–24 months4–6≈ 1Generally stable rhythm.
24–36 months3–5≈ 1Beginning of potty learning.
These values are guidelines: adjust changes/day (1→15) and poops/day (0→6) inside the calculator according to your routine.

Understanding your result: how many cloth diapers you need

Your cloth diaper calculator precisely determines the ideal quantity based on your lifestyle, washing frequency, and your child’s age. A clear tool to balance practicality, comfort, and budget.

For families

The Berceau TE2 system offers a versatile and durable solution. Its FlexiNest shell and interchangeable inserts allow day and night use with comfort and efficiency.

For daycare & childminders

Some facilities require one full diaper per change. Our smart calculator automatically adjusts quantities and lets you add a safety margin.

A balanced cloth routine

Optimize your setup by combining Berceau diapers with our absorbent boosters for nights and disposable liners for easier cleaning.

With Ma Boule De Couches®: fewer purchases, less waste, more comfort.

Complete cloth diaper guide – Ma Boule De Couches®

Discover the complete cloth diaper guide

Learn everything about TE2 systems, effective wash routines and real long-term savings. A clear, certified and illustrated guide created by Ma Boule De Couches® to support families and childcare structures.

Open the full guide
###goupilou

Our best sellers

View all