---
title: What is wood moisture content and why it matters | Minelli
description: What is wood moisture content? Learn how it is calculated and measured, why wood swells and shrinks, and what the right value means for custom wood components.
image: https://blog.minelligroup.com/hubfs/what-is-wood-moisture-content.jpeg
---

[![Logo Minelli](https://blog.minelligroup.com/hubfs/Logo/Nuove%20versioni/logo_minelli_group_w_r.svg)](https://www.minelligroup.com/)

[![Logo Minelli](https://blog.minelligroup.com/hubfs/Logo/Nuove%20versioni/logo_minelli_group_k_r.svg)](https://www.minelligroup.com/)

- [SERVICES](https://www.minelligroup.com/services/)
  
    - [Product Co-Design](https://www.minelligroup.com/services/co-design/)
    - [Fast prototyping](https://www.minelligroup.com/services/fast-prototyping/)
    - [Design for Manufacturing](https://www.minelligroup.com/services/design-for-manufacturing/)
    - [Feasibility Studies](https://www.minelligroup.com/services/feasibility-studies/)
    - [Warehousing](https://www.minelligroup.com/services/warehousing/)
- [ABOUT US](https://www.minelligroup.com/about-us/)
  
  #### About Us
  
    - [Heritage](https://www.minelligroup.com/about-us/heritage/)
    - [Minelli group](https://www.minelligroup.com/about-us/)
    - [Core Values](https://www.minelligroup.com/about-us/values-and-consistent-quality/)
    - [Sustainability](https://www.minelligroup.com/about-us/sustainability/)
- [CONTACTS](https://www.minelligroup.com/contacts/)
- [MAGAZINE](https://blog.minelligroup.com/)
  
  #### Magazine
  
    - [Cosmetics, Fragrance & Spirits Packaging](https://blog.minelligroup.com/packaging)
    - [Personal Care, Beauty & Fine Arts](https://blog.minelligroup.com/personal-care-beauty)
    - [Hardware, Construction & DIY Tools](https://blog.minelligroup.com/hardware-construction-diy)
    - [Kitchenware & Homeware](https://blog.minelligroup.com/kitchenware-homeware)
    - [Shooting Sports](https://blog.minelligroup.com/shooting-sports)
    - [Toys](https://blog.minelligroup.com/wooden-toys)
    - [Furniture](https://blog.minelligroup.com/furniture)
    - [Wood Manufacturing](https://blog.minelligroup.com/wood-manufacturing)
    - [People & Communities](https://blog.minelligroup.com/people-communities)

- [COMPONENTS](https://www.minelligroup.com/wooden-components/)
  
  #### Components
  
    - Cosmetics, Fragrances & Spirits Packaging
    - [Personal Care, Beauty & Fine Arts](https://www.minelligroup.com/industries/beauty-personal-care-wooden-products/)
    - [Hardware, Construction & DIY Tools](https://www.minelligroup.com/industries/painting-diy-tools-wooden-products/)
    - [Kitchenware & Homeware](https://www.minelligroup.com/industries/kitchenware-homeware-food-accessories-wooden-products/)
    - [Shooting Sports](https://www.minelligroup.com/industries/shooting-sports-wooden-products/)
    - [Pet Grooming Tools](https://www.minelligroup.com/industries/pet-grooming-tools/)
    - [Toys](https://www.minelligroup.com/industries/wooden-toys-educational-play-wooden-products/)
    - [Furniture](https://www.minelligroup.com/industries/furniture/)

  #### MINELLI MATERIALS
  
    - [SOLID WOOD](https://www.minelligroup.com/minelli-solid-wood/)
    - [BEYOND WOOD](https://www.minelligroup.com/beyond-wood-minelli-materials/)
    - [MBLACK](https://www.minelligroup.com/beyond-wood-minelli-materials/mblack/)
    - [MCORK](https://www.minelligroup.com/beyond-wood-minelli-materials/mcork/)
    - [FINISHES](https://www.minelligroup.com/finishes/)
- [PRIVATE LABEL PRODUCTS](https://www.minelligroup.com/private-label-wooden-products/)
  
  #### PRIVATE LABEL
  
    - [PET GROOMING TOOL](https://www.minellipets.com/)
    - [HOMEWARE & KITCHENWARE](https://www.minellihome.com/)
    - [PRIMARY COSMETIC PACKAGING](https://www.mpackting.com/)
- OUR BRANDS
  
  #### OUR BRANDS
  
    - [WOOX FACTORY](https://wooxstore.com/)
    - [MINELLI PETS Factory Outlet](https://www.minellipets.com/pages/our-factory)

- SERVICES
  
    - [Product Co-Design](https://www.minelligroup.com/services/co-design/)
    - [Fast prototyping](https://www.minelligroup.com/services/fast-prototyping/)
    - [Design for Manufacturing](https://www.minelligroup.com/services/design-for-manufacturing/)
    - [Feasibility Studies](https://www.minelligroup.com/services/feasibility-studies/)
    - [Warehousing](https://www.minelligroup.com/services/warehousing/)
- ABOUT US
  
  #### About Us
  
    - [Heritage](https://www.minelligroup.com/about-us/heritage/)
    - [Minelli group](https://www.minelligroup.com/about-us/)
    - [Core Values](https://www.minelligroup.com/about-us/values-and-consistent-quality/)
    - [Sustainability](https://www.minelligroup.com/about-us/sustainability/)
- [CONTACTS](https://www.minelligroup.com/contacts/)
- MAGAZINE
  
  #### Magazine
  
    - [Cosmetics, Fragrance & Spirits Packaging](https://blog.minelligroup.com/packaging)
    - [Personal Care, Beauty & Fine Arts](https://blog.minelligroup.com/personal-care-beauty)
    - [Hardware, Construction & DIY Tools](https://blog.minelligroup.com/hardware-construction-diy)
    - [Kitchenware & Homeware](https://blog.minelligroup.com/kitchenware-homeware)
    - [Shooting Sports](https://blog.minelligroup.com/shooting-sports)
    - [Toys](https://blog.minelligroup.com/wooden-toys)
    - [Furniture](https://blog.minelligroup.com/furniture)
    - [Wood Manufacturing](https://blog.minelligroup.com/wood-manufacturing)
    - [People & Communities](https://blog.minelligroup.com/people-communities)
- COMPONENTS
  
  #### Components
  
    - Cosmetics, Fragrances & Spirits Packaging
    - [Personal Care, Beauty & Fine Arts](https://www.minelligroup.com/industries/beauty-personal-care-wooden-products/)
    - [Hardware, Construction & DIY Tools](https://www.minelligroup.com/industries/painting-diy-tools-wooden-products/)
    - [Kitchenware & Homeware](https://www.minelligroup.com/industries/kitchenware-homeware-food-accessories-wooden-products/)
    - [Shooting Sports](https://www.minelligroup.com/industries/shooting-sports-wooden-products/)
    - [Pet Grooming Tools](https://www.minelligroup.com/industries/pet-grooming-tools/)
    - [Toys](https://www.minelligroup.com/industries/wooden-toys-educational-play-wooden-products/)
    - [Furniture](https://www.minelligroup.com/industries/furniture/)

  #### MINELLI MATERIALS
  
    - [SOLID WOOD](https://www.minelligroup.com/minelli-solid-wood/)
    - [BEYOND WOOD](https://www.minelligroup.com/beyond-wood-minelli-materials/)
    - [MBLACK](https://www.minelligroup.com/beyond-wood-minelli-materials/mblack/)
    - [MCORK](https://www.minelligroup.com/beyond-wood-minelli-materials/mcork/)
    - [FINISHES](https://www.minelligroup.com/finishes/)
- PRIVATE LABEL PRODUCTS
  
  #### PRIVATE LABEL
  
    - [PET GROOMING TOOL](https://www.minellipets.com/)
    - [HOMEWARE & KITCHENWARE](https://www.minellihome.com/)
    - [PRIMARY COSMETIC PACKAGING](https://www.mpackting.com/)
- OUR BRANDS
  
  #### OUR BRANDS
  
    - [WOOX FACTORY](https://wooxstore.com/)
    - [MINELLI PETS Factory Outlet](https://www.minellipets.com/pages/our-factory)

[Wood Manufacturing](https://blog.minelligroup.com/wood-manufacturing)

# What is wood moisture content and why it matters in manufacturing

Posted on November 11 2026 - Reading time: 2 minutes

---

![Orderly stacks of light wood pieces in a warehouse](https://blog.minelligroup.com/hs-fs/hubfs/what-is-wood-moisture-content.jpeg?width=750&height=400&name=what-is-wood-moisture-content.jpeg)

**Wood moisture content is the weight of water in a piece of wood, expressed as a percentage of the weight of the same wood once completely dried.** It matters in manufacturing because wood swells and shrinks as its moisture content changes, so a component made at the wrong value will not keep its dimensions, its fit or its finish.

At Minelli Group we have transformed wood into [custom components](https://www.minelligroup.com/minelli-solid-wood/) since 1937, and moisture is the first variable we control. This guide explains how moisture content is calculated and measured, why wood moves, and what the right value depends on.

## How wood moisture content is calculated

The formula compares the water in the wood with the wood itself: **moisture content = (current weight − oven-dry weight) ÷ oven-dry weight × 100**. A board that weighs 115 g and weighs 100 g after oven drying contained 15 g of water, so its moisture content is 15%. Because the reference is dry wood, the value can exceed 100%: freshly cut wood often holds more water than wood fibre.

## Why wood moves

Water in wood exists in two forms. Free water fills the cell cavities, and bound water is held inside the cell walls. During drying, free water leaves first and the wood does not change size. The turning point is the **fibre saturation point, about 30% moisture content for most woods**. Below it, wood shrinks as it dries and swells as it takes moisture back.

After drying, wood keeps exchanging moisture with the air until it reaches equilibrium with the surrounding humidity. Wood exposed to 30% relative humidity settles at about 6%, and **wood kiln dried to 6% and stored outdoors in a temperate climate regains moisture until it reaches about 12%**.

Shrinkage is also uneven. Sugar maple shrinks 9.5% tangentially (along the growth rings) and 4.9% radially from green to oven-dry, roughly twice as much in one direction, so pieces distort as they dry. Mahogany moves less: 5.0% and 3.6%.

## How moisture content is measured

The **oven-dry method** is the reference: a sample is weighed, dried in an oven at about 103 °C until its weight stops changing, and weighed again. It is accurate but slow and destructive. **Moisture meters** give a reading in seconds and suit checks during production, with the oven-dry method used to verify them.

## What it means for manufacturing

A component that fits at the factory can loosen or tighten at its destination if its moisture content does not match the climate where it will be used. Moisture also affects the process: drying to the right value gives us **a cleaner milling process, better dimensional stability and a lower risk of breakage**. We explain more in our article on [the role of technology in custom wood manufacturing](https://blog.minelligroup.com/wood-manufacturing/technology-custom-wood-manufacturing).

![Technician measuring a machined wooden component with a digital caliper](https://blog.minelligroup.com/hs-fs/hubfs/measuring-wood-component-dimensions.jpeg?width=1920&height=1281&name=measuring-wood-component-dimensions.jpeg)

## What to define with your manufacturer

We define with the customer the product specification in every detail, and moisture content is part of it. These are the points to settle:

- **The target value**, based on the climate where the product will be used.
- **How it is measured and verified**, and how the result is documented.
- **How components are stored and packed until delivery**, because dry wood regains moisture from humid air.

**Developing a wooden component?** [Tell our team](https://www.minelligroup.com/contacts/) where it will be used and share the drawing.

 Topics: [wood manufacturing](https://blog.minelligroup.com/wood-manufacturing/tag/wood-manufacturing)

### Minelli Magazine

Stay up to date on the latest news in wood manufacturing!

 Subscribe to the newsletter and receive useful information, advice and articles directly in your inbox!

### Subscribe Here!

### Recent Posts

### Posts by Tag

- [custom wood products (41)](https://blog.minelligroup.com/wood-manufacturing/tag/custom-wood-products)
- [wood manufacturing (36)](https://blog.minelligroup.com/wood-manufacturing/tag/wood-manufacturing)
- [wood maker (24)](https://blog.minelligroup.com/wood-manufacturing/tag/wood-maker)
- [wood design (16)](https://blog.minelligroup.com/wood-manufacturing/tag/wood-design)
- [wood manufacturing company (15)](https://blog.minelligroup.com/wood-manufacturing/tag/wood-manufacturing-company)
- [electric guitar body (12)](https://blog.minelligroup.com/wood-manufacturing/tag/electric-guitar-body)
- [electric guitar manufacturing process (12)](https://blog.minelligroup.com/wood-manufacturing/tag/electric-guitar-manufacturing-process)
- [sustainability (12)](https://blog.minelligroup.com/wood-manufacturing/tag/sustainability)
- [electric guitar neck (7)](https://blog.minelligroup.com/wood-manufacturing/tag/electric-guitar-neck)
- [sustainable design (5)](https://blog.minelligroup.com/wood-manufacturing/tag/sustainable-design)
- [electric guitar body styles (4)](https://blog.minelligroup.com/wood-manufacturing/tag/electric-guitar-body-styles)
- [supplier (4)](https://blog.minelligroup.com/wood-manufacturing/tag/supplier)
- [Wooden baseball bats (3)](https://blog.minelligroup.com/wood-manufacturing/tag/wooden-baseball-bats)
- [upcycling (3)](https://blog.minelligroup.com/wood-manufacturing/tag/upcycling)
- [camping knife (2)](https://blog.minelligroup.com/wood-manufacturing/tag/camping-knife)
- [outdoor (2)](https://blog.minelligroup.com/wood-manufacturing/tag/outdoor)
- [hairbrush handle (1)](https://blog.minelligroup.com/wood-manufacturing/tag/hairbrush-handle)
- [knife handle material (1)](https://blog.minelligroup.com/wood-manufacturing/tag/knife-handle-material)
- [metrology (1)](https://blog.minelligroup.com/wood-manufacturing/tag/metrology)
- [wooden hairbrush (1)](https://blog.minelligroup.com/wood-manufacturing/tag/wooden-hairbrush)
- [wooden handle (1)](https://blog.minelligroup.com/wood-manufacturing/tag/wooden-handle)
- [wooden pin (1)](https://blog.minelligroup.com/wood-manufacturing/tag/wooden-pin)
- [wooden toys (1)](https://blog.minelligroup.com/wood-manufacturing/tag/wooden-toys)

See all

**Minelli Spa a socio unico**  
PIVA 00218460160

Contact Us: +39 0345 55111

**Headquarters:**
  
Via Locatelli, 17 – 24019
Zogno (BG), Italy

- [Solid Wood Components](https://www.minelligroup.com/wooden-components/)
- [Private Label For Your Industry](https://www.minelligroup.com/private-label-wooden-products/)
- [Industries](https://www.minelligroup.com/industries/)
- [Services](https://www.minelligroup.com/services/)

- [Magazine](https://blog.minelligroup.com/)
- [Contacts](https://www.minelligroup.com/contacts/)
- [Work with us](https://www.minelligroup.com/work-with-us/)

- [WOOX](https://wooxstore.com/)
- [mPACKTING](https://www.mpackting.com/it)
- [minelliPETS](https://www.minellipets.com/)
- [minellihome](http://www.minellihome.com/)

ISO 45001-2023 / ISO 28000-2022 / Security management policy  
General terms and conditions of sale: Minelli S.p.A. / Minelli USA LLC.

Copyright ©  All Rights Reserved

![Screenshot 2026-09-21 at 4.00.39 PM](https://blog.minelligroup.com/hs-fs/hubfs/Screenshot%202026-09-21%20at%204.00.39%20PM.png?width=84&height=96&name=Screenshot%202026-09-21%20at%204.00.39%20PM.png "Screenshot 2026-09-21 at 4.00.39 PM")

![Screenshot 2026-09-18 at 3.13.12 PM](https://blog.minelligroup.com/hubfs/Screenshot%202026-09-18%20at%203.13.12%20PM.png "Screenshot 2026-09-18 at 3.13.12 PM")

![Screenshot 2026-09-18 at 3.13.16 PM](https://blog.minelligroup.com/hubfs/Screenshot%202026-09-18%20at%203.13.16%20PM.png "Screenshot 2026-09-18 at 3.13.16 PM")

Privacy Policy |  Cookie Policy | Whisteblowing | Accessibility Statement

Made with 🧡 by OTO Agency

```json
{
  "@context" : "https://schema.org",
  "@type" : "BlogPosting",
  "author" : {
    "@type" : "Person",
    "name" : "Luca Minelli",
    "url" : "https://blog.minelligroup.com/wood-manufacturing/author/luca-minelli"
  },
  "dateModified" : "2026-11-11T08:00:00.552Z",
  "datePublished" : "2026-11-11T08:00:00.000Z",
  "headline" : "What is wood moisture content and why it matters | Minelli",
  "image" : [ "https://blog.minelligroup.com/hubfs/what-is-wood-moisture-content.jpeg" ],
  "mainEntityOfPage" : {
    "@id" : "https://blog.minelligroup.com/wood-manufacturing/what-is-wood-moisture-content",
    "@type" : "WebPage"
  },
  "publisher" : {
    "@type" : "Organization",
    "logo" : {
      "@type" : "ImageObject",
      "url" : "https://blog.minelligroup.com/hubfs/Imported%20sitepage%20images/logo_minelligroup.png"
    },
    "name" : "Minelli Spa"
  }
}
```

```json
{
  "@context" : "https://schema.org",
  "@type" : "Article",
  "author" : {
    "@type" : "Organization",
    "name" : "Minelli Group",
    "url" : "https://www.minelligroup.com/"
  },
  "dateModified" : "2026-11-11",
  "datePublished" : "2026-11-11",
  "description" : "What is wood moisture content? Learn how it is calculated and measured, why wood swells and shrinks, and what the right value means for custom wood components.",
  "headline" : "What is wood moisture content and why it matters in manufacturing",
  "inLanguage" : "en",
  "mainEntityOfPage" : {
    "@id" : "https://blog.minelligroup.com/wood-manufacturing/what-is-wood-moisture-content",
    "@type" : "WebPage"
  },
  "publisher" : {
    "@type" : "Organization",
    "name" : "Minelli Group",
    "url" : "https://www.minelligroup.com/"
  }
}
```