diff --git a/product_net_weight/README.rst b/product_net_weight/README.rst
new file mode 100644
index 000000000000..ab9484e9b9d0
--- /dev/null
+++ b/product_net_weight/README.rst
@@ -0,0 +1,8 @@
+=====================
+Products - Net Weight
+=====================
+
+.. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
diff --git a/product_net_weight/__init__.py b/product_net_weight/__init__.py
new file mode 100644
index 000000000000..0650744f6bc6
--- /dev/null
+++ b/product_net_weight/__init__.py
@@ -0,0 +1 @@
+from . import models
diff --git a/product_net_weight/__manifest__.py b/product_net_weight/__manifest__.py
new file mode 100644
index 000000000000..a945854dcc1b
--- /dev/null
+++ b/product_net_weight/__manifest__.py
@@ -0,0 +1,25 @@
+# Copyright (C) 2021 - Today: GRAP (http://www.grap.coop)
+# @author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+{
+    "name": "Products - Net Weight",
+    "summary": "Add 'Net Weight' and 'Weight Price' on product models",
+    "version": "12.0.1.0.1",
+    "category": "Product",
+    "author": "GRAP,Odoo Community Association (OCA)",
+    "maintainers": ["legalsylvain"],
+    "website": "https://github.com/OCA/product-attribute",
+    "license": "AGPL-3",
+    "depends": ["product"],
+    "data": [
+        "views/view_product_product.xml",
+        "views/view_product_template.xml",
+    ],
+    "demo": [
+        "demo/product_product.xml",
+    ],
+    "images": [
+        "static/description/product_product_form.png",
+    ],
+    "installable": True,
+}
diff --git a/product_net_weight/demo/product_product.xml b/product_net_weight/demo/product_product.xml
new file mode 100644
index 000000000000..03f5afc7897d
--- /dev/null
+++ b/product_net_weight/demo/product_product.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+Copyright (C) 2021 - Today: GRAP (http://www.grap.coop)
+@author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+deLicense AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+-->
+<odoo>
+
+    <record id="product_strawberry_jam" model="product.product">
+        <field name="name">Strawberry Jam (Jar of 250 grams)</field>
+        <field name="uom_id" ref="uom.product_uom_unit" />
+        <field name="uom_po_id" ref="uom.product_uom_unit" />
+        <field name="net_weight">0.250</field>
+        <field name="weight">0.410</field>
+        <field name="standard_price">1.97</field>
+        <field name="list_price">2.70</field>
+    </record>
+
+</odoo>
diff --git a/product_net_weight/i18n/fr.po b/product_net_weight/i18n/fr.po
new file mode 100644
index 000000000000..005bfbec1b9c
--- /dev/null
+++ b/product_net_weight/i18n/fr.po
@@ -0,0 +1,79 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+#   * product_net_weight
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 12.0\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2021-08-06 09:11+0000\n"
+"PO-Revision-Date: 2021-08-06 09:11+0000\n"
+"Last-Translator: <>\n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: product_net_weight
+#: model:ir.model.fields,field_description:product_net_weight.field_product_product__weight
+#: model:ir.model.fields,field_description:product_net_weight.field_product_template__weight
+msgid "Gross Weight"
+msgstr "Poids brut"
+
+#. module: product_net_weight
+#: model:ir.model.fields,field_description:product_net_weight.field_product_product__net_weight
+#: model:ir.model.fields,field_description:product_net_weight.field_product_template__net_weight
+msgid "Net Weight"
+msgstr "Poids net"
+
+#. module: product_net_weight
+#: model:ir.model.fields,help:product_net_weight.field_product_product__net_weight
+#: model:ir.model.fields,help:product_net_weight.field_product_template__net_weight
+msgid "Net Weight of the product, container excluded."
+msgstr "Poids net du produit, contenant exclus."
+
+#. module: product_net_weight
+#: model:ir.model,name:product_net_weight.model_product_product
+msgid "Product"
+msgstr "Article"
+
+#. module: product_net_weight
+#: model:ir.model,name:product_net_weight.model_product_template
+msgid "Product Template"
+msgstr "Modèle d'article"
+
+#. module: product_net_weight
+#: model:product.product,name:product_net_weight.product_strawberry_jam
+#: model:product.template,name:product_net_weight.product_strawberry_jam_product_template
+msgid "Strawberry Jam (Jar of 250 grams)"
+msgstr "Confiture de fraise (Pot de 250 grammes)"
+
+#. module: product_net_weight
+#: model:ir.model.fields,help:product_net_weight.field_product_template__weight
+msgid "The weight of the contents in Kg, not including any packaging, etc."
+msgstr "Le poids du contenu en kilogrammes, sans compter tout emballage, etc."
+
+#. module: product_net_weight
+#: model:product.product,uom_name:product_net_weight.product_strawberry_jam
+#: model:product.template,uom_name:product_net_weight.product_strawberry_jam_product_template
+msgid "Unit(s)"
+msgstr "Unité(s)"
+
+#. module: product_net_weight
+#: model:ir.model.fields,field_description:product_net_weight.field_product_product__weight_price
+#: model:ir.model.fields,field_description:product_net_weight.field_product_template__weight_price
+msgid "Weight Price"
+msgstr ""
+
+#. module: product_net_weight
+#: model:ir.model.fields,help:product_net_weight.field_product_product__weight
+msgid "Weight of the product, packaging not included. The unit of measure can be changed in the general settings"
+msgstr "Poids du produit, sans le conditionnement. L'unité de mesure peut être changée dans les paramètres généraux."
+
+#. module: product_net_weight
+#: model:product.product,weight_uom_name:product_net_weight.product_strawberry_jam
+#: model:product.template,weight_uom_name:product_net_weight.product_strawberry_jam_product_template
+msgid "kg"
+msgstr ""
+
diff --git a/product_net_weight/models/__init__.py b/product_net_weight/models/__init__.py
new file mode 100644
index 000000000000..18b37e853203
--- /dev/null
+++ b/product_net_weight/models/__init__.py
@@ -0,0 +1,2 @@
+from . import product_product
+from . import product_template
diff --git a/product_net_weight/models/product_product.py b/product_net_weight/models/product_product.py
new file mode 100644
index 000000000000..632f72b6d07b
--- /dev/null
+++ b/product_net_weight/models/product_product.py
@@ -0,0 +1,30 @@
+# Copyright (C) 2021 - Today: GRAP (http://www.grap.coop)
+# @author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo import api, fields, models
+from odoo.addons import decimal_precision as dp
+
+
+class ProductProduct(models.Model):
+    _inherit = "product.product"
+
+    net_weight = fields.Float(
+        string="Net Weight",
+        digits=dp.get_precision("Stock Weight"),
+        help="Net Weight of the product, container excluded.",
+    )
+
+    weight_price = fields.Float(
+        string="Weight Price",
+        digits=dp.get_precision("Product Price"),
+        compute="_compute_weight_price"
+    )
+
+    # Explicit field, renaming it
+    weight = fields.Float(string="Gross Weight")
+
+    @api.depends("weight", "list_price")
+    def _compute_weight_price(self):
+        for product in self.filtered(lambda x: x.net_weight):
+            product.weight_price = product.list_price / product.net_weight
diff --git a/product_net_weight/models/product_template.py b/product_net_weight/models/product_template.py
new file mode 100644
index 000000000000..c8f91da4108e
--- /dev/null
+++ b/product_net_weight/models/product_template.py
@@ -0,0 +1,27 @@
+# Copyright (C) 2021 - Today: GRAP (http://www.grap.coop)
+# @author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo import fields, models
+from odoo.addons import decimal_precision as dp
+
+
+class ProductTemplate(models.Model):
+    _inherit = "product.template"
+
+    net_weight = fields.Float(
+        string="Net Weight",
+        related="product_variant_ids.net_weight",
+        digits=dp.get_precision("Stock Weight"),
+        help="Net Weight of the product, container excluded.",
+        readonly=False,
+    )
+
+    weight_price = fields.Float(
+        string="Weight Price",
+        digits=dp.get_precision("Product Price"),
+        related="product_variant_ids.weight_price",
+    )
+
+    # Explicit field, renaming it
+    weight = fields.Float(string="Gross Weight")
diff --git a/product_net_weight/readme/CONTRIBUTORS.rst b/product_net_weight/readme/CONTRIBUTORS.rst
new file mode 100644
index 000000000000..e1525ce042bd
--- /dev/null
+++ b/product_net_weight/readme/CONTRIBUTORS.rst
@@ -0,0 +1 @@
+* Sylvain LE GAL (https://www.twitter.com/legalsylvain)
diff --git a/product_net_weight/readme/DESCRIPTION.rst b/product_net_weight/readme/DESCRIPTION.rst
new file mode 100644
index 000000000000..11d3199c4e8f
--- /dev/null
+++ b/product_net_weight/readme/DESCRIPTION.rst
@@ -0,0 +1,4 @@
+This module extends the functionality of stock module to support net weight. (container excluded)
+
+It also compute the Weight Price (Sale Price / Net Weight) that is a mandatory information
+in certain businesses.
diff --git a/product_net_weight/readme/USAGE.rst b/product_net_weight/readme/USAGE.rst
new file mode 100644
index 000000000000..2f6e9d051b9e
--- /dev/null
+++ b/product_net_weight/readme/USAGE.rst
@@ -0,0 +1,11 @@
+* Go to 'Inventory > Master Data > Product' and edit items.
+
+* Go to 'Inventory' tab, and fill the "Net Weight" value.
+
+.. figure:: ../static/description/product_form.png
+
+* If the net weight defined, the weight price is computed and displayed on the main tab
+
+.. figure:: ../static/description/product_form_price.png
+
+**Note**: The original weight field is renamed to "Gross Weight", to be more explicit.
diff --git a/product_net_weight/static/description/product_form.png b/product_net_weight/static/description/product_form.png
new file mode 100644
index 000000000000..f50a84dac093
Binary files /dev/null and b/product_net_weight/static/description/product_form.png differ
diff --git a/product_net_weight/static/description/product_form_price.png b/product_net_weight/static/description/product_form_price.png
new file mode 100644
index 000000000000..d59a5875ab95
Binary files /dev/null and b/product_net_weight/static/description/product_form_price.png differ
diff --git a/product_net_weight/views/view_product_product.xml b/product_net_weight/views/view_product_product.xml
new file mode 100644
index 000000000000..404f1dc45562
--- /dev/null
+++ b/product_net_weight/views/view_product_product.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+Copyright (C) 2021 - Today: GRAP (http://www.grap.coop)
+@author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+-->
+<odoo>
+
+    <record id="view_product_product_form" model="ir.ui.view">
+        <field name="model">product.product</field>
+        <field name="inherit_id" ref="product.product_variant_easy_edit_view" />
+        <field name="arch" type="xml">
+            <field name="lst_price" position="after">
+                <label for="weight_price" attrs="{'invisible': [('weight_price', '=', 0.0)]}"/>
+                <div class="o_row" name="weight_price">
+                    <field name="weight_price" widget="monetary"
+                        options="{'currency_field': 'currency_id', 'field_digits': True}"
+                        attrs="{'invisible': [('weight_price', '=', 0.0)]}"/>
+                    <span> / <field name="weight_uom_name"/></span>
+                </div>
+            </field>
+            <xpath expr="//label[@for='weight']" position="before">
+                <label for="net_weight"/>
+                <div class="o_row">
+                    <field name="net_weight"/>
+                    <span><field name="weight_uom_name"/></span>
+                </div>
+            </xpath>
+        </field>
+    </record>
+
+</odoo>
diff --git a/product_net_weight/views/view_product_template.xml b/product_net_weight/views/view_product_template.xml
new file mode 100644
index 000000000000..3e1e6fd3cef8
--- /dev/null
+++ b/product_net_weight/views/view_product_template.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+Copyright (C) 2021 - Today: GRAP (http://www.grap.coop)
+@author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+-->
+<odoo>
+
+    <record id="view_product_template_form" model="ir.ui.view">
+        <field name="model">product.template</field>
+        <field name="inherit_id" ref="product.product_template_form_view" />
+        <field name="arch" type="xml">
+            <field name="list_price" position="after">
+                <label for="weight_price"
+                    attrs="{'invisible':['|', ('weight_price', '=', 0.0), ('product_variant_count', '&gt;', 1), ('is_product_variant', '=', False)]}"/>
+                <div class="o_row" name="weight_price"
+                    attrs="{'invisible':['|', ('weight_price', '=', 0.0), ('product_variant_count', '&gt;', 1), ('is_product_variant', '=', False)]}">
+                    <field name="weight_price" widget="monetary" options="{'currency_field': 'currency_id', 'field_digits': True}"/>
+                    <span> / <field name="weight_uom_name"/></span>
+                </div>
+            </field>
+            <xpath expr="//label[@for='weight']" position="before">
+                <label for="net_weight" attrs="{'invisible':[('product_variant_count', '&gt;', 1), ('is_product_variant', '=', False)]}"/>
+                <div class="o_row" name="net_weight" attrs="{'invisible':[('product_variant_count', '&gt;', 1), ('is_product_variant', '=', False)]}">
+                    <field name="net_weight"/>
+                    <span><field name="weight_uom_name"/></span>
+                </div>
+            </xpath>
+        </field>
+    </record>
+
+</odoo>