ISO 24975:2026

International
Standard
ISO 24975
First edition
Furniture — Beds and mattresses
2026-02
— Methods of measurement and
recommended tolerances
Ameublement — Lits et matelas — Méthodes de mesure et
tolérances recommandées
Reference number
© ISO 2026
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General test conditions . 2
4.1 Preparation .2
4.2 Measuring accuracy .2
5 Test apparatus . 2
6 Methods of measurement . 3
6.1 External plan dimensions of mattresses and bed bases .3
6.2 Internal plan dimensions of bed frames .4
6.3 Determination of the height of mattresses and divan bases .4
7 Recommended tolerances . 5
8 Test report . 5

iii
Foreword
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iv
Introduction
This document establishes a method for the determination of the essential dimensions of mattresses, bed
frames, divans and bed bases.
In order to help manufacturers, retailers and consumers to get the correct fit between the bed components,
a nominal dimension, D, has been introduced and tolerances to the nominal dimension are recommended.

v
International Standard ISO 24975:2026(en)
Furniture — Beds and mattresses — Methods of
measurement and recommended tolerances
1 Scope
This document specifies methods of measurement for the determination of the dimensions of all types of
mattresses, bed frames, divans and bed bases intended for adult size.
It also includes recommended tolerances based on any nominal dimension, in order to ensure the correct fit
between the bed components.
This document does not apply to the following:
— air beds/mattresses and water beds/mattresses;
— mattress pads that are placed on top of the main support mattress;
— dimensions of bed bases for bunk beds and high beds.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
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