--- /dev/null
+``number_format``
+=================
+
+.. versionadded:: 1.5
+ The ``number_format`` filter was added in Twig 1.5
+
+The ``number_format`` filter formats numbers. It is a wrapper around PHP's
+`number_format`_ function:
+
+.. code-block:: jinja
+
+ {{ 200.35|number_format }}
+
+You can control the number of decimal places, decimal point, and thousands
+separator using the additional arguments:
+
+.. code-block:: jinja
+
+ {{ 9800.333|number_format(2, '.', ',') }}
+
+To format negative numbers, wrap the number with parentheses (needed because of
+Twig's :ref:`precedence of operators <twig-expressions>`:
+
+.. code-block:: jinja
+
+ {{ -9800.333|number_format(2, '.', ',') }} {# outputs : -9 #}
+ {{ (-9800.333)|number_format(2, '.', ',') }} {# outputs : -9.800,33 #}
+
+If no formatting options are provided then Twig will use the default formatting
+options of:
+
+* 0 decimal places.
+* ``.`` as the decimal point.
+* ``,`` as the thousands separator.
+
+These defaults can be easily changed through the core extension:
+
+.. code-block:: php
+
+ $twig = new Twig_Environment($loader);
+ $twig->getExtension('Twig_Extension_Core')->setNumberFormat(3, '.', ',');
+
+ // before Twig 1.26
+ $twig->getExtension('core')->setNumberFormat(3, '.', ',');
+
+The defaults set for ``number_format`` can be over-ridden upon each call using the
+additional parameters.
+
+Arguments
+---------
+
+* ``decimal``: The number of decimal points to display
+* ``decimal_point``: The character(s) to use for the decimal point
+* ``thousand_sep``: The character(s) to use for the thousands separator
+
+.. _`number_format`: http://php.net/number_format