diff --git a/rental_base/data/product_uom_data.xml b/rental_base/data/product_uom_data.xml
index 7e130fe9..761a1bc0 100644
--- a/rental_base/data/product_uom_data.xml
+++ b/rental_base/data/product_uom_data.xml
@@ -7,5 +7,11 @@
             <field ref="uom.uom_categ_wtime" name="category_id" />
             <field name="factor" eval="0.033" />
         </record>
+        <record id="product_uom_week" model="uom.uom">
+            <field name="name">Week(s)</field>
+            <field name="uom_type">bigger</field>
+            <field ref="uom.uom_categ_wtime" name="category_id" />
+            <field name="factor" eval="0.143" />
+        </record>
     </data>
 </odoo>
diff --git a/rental_base/i18n/de.po b/rental_base/i18n/de.po
index da18e57d..f59dad7d 100644
--- a/rental_base/i18n/de.po
+++ b/rental_base/i18n/de.po
@@ -6,8 +6,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Odoo Server 12.0\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2022-06-27 07:37+0000\n"
-"PO-Revision-Date: 2022-06-27 07:37+0000\n"
+"POT-Creation-Date: 2022-12-14 14:28+0000\n"
+"PO-Revision-Date: 2022-12-14 14:28+0000\n"
 "Last-Translator: <>\n"
 "Language-Team: \n"
 "Language: \n"
@@ -597,6 +597,11 @@ msgstr "Lieferantengutschriften"
 msgid "Vendors"
 msgstr "Lieferanten"
 
+#. module: rental_base
+#: model:uom.uom,name:rental_base.product_uom_week
+msgid "Week(s)"
+msgstr "Woche(n)"
+
 #. module: rental_base
 #: model:ir.model.fields,field_description:rental_base.field_update_sale_line_date_line__wizard_id
 msgid "Wizard"
diff --git a/rental_base/i18n/rental_base.pot b/rental_base/i18n/rental_base.pot
index 496179ce..b1b123a0 100644
--- a/rental_base/i18n/rental_base.pot
+++ b/rental_base/i18n/rental_base.pot
@@ -544,6 +544,11 @@ msgstr ""
 msgid "Vendors"
 msgstr ""
 
+#. module: rental_base
+#: model:uom.uom,name:rental_base.product_uom_week
+msgid "Week(s)"
+msgstr ""
+
 #. module: rental_base
 #: model:ir.model.fields,field_description:rental_base.field_update_sale_line_date_line__wizard_id
 msgid "Wizard"
diff --git a/rental_base/models/sale.py b/rental_base/models/sale.py
index 12926ba8..3e50a53b 100644
--- a/rental_base/models/sale.py
+++ b/rental_base/models/sale.py
@@ -1,6 +1,7 @@
 # Part of rental-vertical See LICENSE file for full copyright and licensing details.
 
 import datetime
+from math import ceil
 
 from odoo import _, api, exceptions, fields, models
 from odoo.exceptions import ValidationError
@@ -204,10 +205,12 @@ def _prepare_invoice_line(self, qty):
     @api.model
     def _get_time_uom(self):
         uom_month = self.env.ref("rental_base.product_uom_month")
+        uom_week = self.env.ref("rental_base.product_uom_week")
         uom_day = self.env.ref("uom.product_uom_day")
         uom_hour = self.env.ref("uom.product_uom_hour")
         return {
             "month": uom_month,
+            "week": uom_week,
             "day": uom_day,
             "hour": uom_hour,
         }
@@ -226,6 +229,8 @@ def _get_number_of_time_unit(self):
             # https://www.checkyourmath.com/convert/time/days_months.php
             number = ((self.end_date - self.start_date).days + 1) / 30.4167
             number = float_round(number, precision_rounding=1)
+        elif self.product_uom.id == time_uoms["week"].id:
+            number = ceil(((self.end_date - self.start_date).days + 1) / 7)
         return number
 
     @api.multi
diff --git a/rental_base/tests/stock_common.py b/rental_base/tests/stock_common.py
index 58a160f3..70936e29 100644
--- a/rental_base/tests/stock_common.py
+++ b/rental_base/tests/stock_common.py
@@ -18,6 +18,7 @@ def setUp(self):
         self.uom_hour = self.env.ref("uom.product_uom_hour")
         self.uom_day = self.env.ref("uom.product_uom_day")
         self.uom_month = self.env.ref("rental_base.product_uom_month")
+        self.uom_week = self.env.ref("rental_base.product_uom_week")
         self.uom_unit = self.env.ref("uom.product_uom_unit")
         self.uom_kgm = self.env.ref("uom.product_uom_kgm")
         self.warehouse0 = self.env.ref("stock.warehouse0")
diff --git a/rental_base/tests/test_update_time_rental_order.py b/rental_base/tests/test_update_time_rental_order.py
index ed694ec6..d5296142 100644
--- a/rental_base/tests/test_update_time_rental_order.py
+++ b/rental_base/tests/test_update_time_rental_order.py
@@ -25,6 +25,7 @@ def setUp(self):
         self.date_0111 = fields.Date.from_string("2021-01-11")
         self.date_0103 = fields.Date.from_string("2021-01-03")
         self.date_0112 = fields.Date.from_string("2021-01-12")
+        self.date_0131 = fields.Date.from_string("2021-01-31")
 
     def test_00_update_time_rental_order(self):
         # rental order
@@ -166,3 +167,16 @@ def test_00_update_time_rental_order(self):
             rental_2.in_move_id.date_expected,
             fields.Datetime.to_datetime(self.date_0112),
         )
+
+    def test_00_get_time_unit(self):
+        rental_order = self._create_rental_order(
+            self.partnerA.id, self.date_0101, self.date_0131
+        )
+        days = rental_order.order_line._get_number_of_time_unit()
+        rental_order.order_line.product_uom = self.uom_week
+        weeks = rental_order.order_line._get_number_of_time_unit()
+        rental_order.order_line.product_uom = self.uom_month
+        months = rental_order.order_line._get_number_of_time_unit()
+        self.assertEqual(days, 31)
+        self.assertEqual(weeks, 5)
+        self.assertEqual(months, 1)