diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index ac7cc3c50..e7457c39a 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -266,7 +266,8 @@ module ApplicationHelper
     when Integer
       object.to_s
     when Float
-      sprintf "%.2f", object
+      number_with_delimiter(object, delimiter: '',
+                                    separator: ::I18n.t('number.format.separator'))
     when User, Group
       html ? link_to_principal(object) : object.to_s
     when Project
diff --git a/lib/redmine/field_format.rb b/lib/redmine/field_format.rb
index a27311141..5e81055f1 100644
--- a/lib/redmine/field_format.rb
+++ b/lib/redmine/field_format.rb
@@ -539,8 +539,9 @@ module Redmine
       end
 
       def validate_single_value(custom_field, value, customized=nil)
+        value = normalize_float(value)
         errs = super
-        errs << ::I18n.t('activerecord.errors.messages.invalid') unless (Kernel.Float(value) rescue nil)
+        errs << ::I18n.t('activerecord.errors.messages.invalid') unless Kernel.Float(value, exception: false)
         errs
       end
 
diff --git a/lib/redmine/i18n.rb b/lib/redmine/i18n.rb
index 8434cd9be..dab486893 100644
--- a/lib/redmine/i18n.rb
+++ b/lib/redmine/i18n.rb
@@ -99,6 +99,18 @@ module Redmine
       end
     end
 
+    # Will consider language specific separator in user input
+    # and normalize them to a unified format to be accepted by Kernel.Float().
+    #
+    # @param value [String] A string represenation of a float value.
+    #
+    # @note The delimiter cannot be used here if it is a decimal point since it
+    #       will clash with the dot separator.
+    def normalize_float(value)
+      separator = ::I18n.t('number.format.separator')
+      value.gsub(/[#{separator}]/, separator => '.')
+    end
+
     def day_name(day)
       ::I18n.t('date.day_names')[day % 7]
     end
diff --git a/test/unit/lib/redmine/field_format/numeric_format_test.rb b/test/unit/lib/redmine/field_format/numeric_format_test.rb
index 9ced022fb..7ceb61d2b 100644
--- a/test/unit/lib/redmine/field_format/numeric_format_test.rb
+++ b/test/unit/lib/redmine/field_format/numeric_format_test.rb
@@ -23,6 +23,10 @@ require 'redmine/field_format'
 class Redmine::NumericFieldFormatTest < ActionView::TestCase
   include ApplicationHelper
 
+  fixtures :projects, :users, :issue_statuses, :enumerations,
+           :trackers, :projects_trackers, :roles, :member_roles,
+           :members, :enabled_modules
+
   def setup
     User.current = nil
   end
@@ -34,4 +38,25 @@ class Redmine::NumericFieldFormatTest < ActionView::TestCase
     assert_equal 3, field.format.formatted_custom_value(self, custom_value, false)
     assert_equal '<a href="http://foo/3" class="external">3</a>', field.format.formatted_custom_value(self, custom_value, true)
   end
+
+
+  def test_float_field_value_should_validate_when_given_with_various_separator
+    field = IssueCustomField.generate!(field_format: 'float')
+    issue = Issue.generate!(tracker: Tracker.find(1), status: IssueStatus.find(1), priority: IssuePriority.find(6))
+    ::I18n.locale = :de
+    assert field.format.validate_single_value(field, '3,33', issue)
+    ::I18n.locale = :en
+    assert field.format.validate_single_value(field, '3.33', issue)
+  end
+
+  def test_float_field_should_format_with_various_locale_separator_and_delimiter
+    field = IssueCustomField.generate!(field_format: 'float')
+    issue = Issue.generate!(tracker: Tracker.find(1), status: IssueStatus.find(1), priority: IssuePriority.find(6))
+    ::I18n.locale = :de
+    issue.custom_field_values = { field.id => '3333.33' }
+    issue.save!
+    assert_equal '3333,33', format_object(issue.reload.custom_field_values.last, false)
+    ::I18n.locale = :en
+    assert_equal '3333.33', format_object(issue.reload.custom_field_values.last, false)
+  end
 end