diff --git a/openapi_codec/decode.py b/openapi_codec/decode.py
index 679ddb8..c300b24 100644
--- a/openapi_codec/decode.py
+++ b/openapi_codec/decode.py
@@ -44,9 +44,9 @@ def _parse_document(data, base_url=None):
                                 name=field_name,
                                 location='form',
                                 required=is_required,
-                                schema=coreschema.String(description=field_description)
+                                schema=coreschema.String(description=field_description, format=field_format)
                             )
-                            for field_name, is_required, field_description in expanded
+                            for field_name, is_required, field_description, field_format in expanded
                             if not any([field.name == field_name for field in fields])
                         ]
                         fields += expanded_fields
@@ -188,7 +188,7 @@ def _expand_schema(schema):
     schema_required = _get_list(schema, 'required')
     if ((schema_type == ['object']) or (schema_type == 'object')) and schema_properties:
         return [
-            (key, key in schema_required, schema_properties[key].get('description'))
+            (key, key in schema_required, schema_properties[key].get('description'), schema_properties[key].get('format'))
             for key in schema_properties.keys()
         ]
     return None
diff --git a/openapi_codec/encode.py b/openapi_codec/encode.py
index 13b3ef4..0e2d58e 100644
--- a/openapi_codec/encode.py
+++ b/openapi_codec/encode.py
@@ -128,6 +128,10 @@ def _get_field_type(field):
     }.get(field.schema.__class__, 'string')
 
 
+def _get_field_format(field):
+    return field.schema and getattr(field.schema, 'format', None)
+
+
 def _get_parameters(link, encoding):
     """
     Generates Swagger Parameter Item object.
@@ -140,6 +144,7 @@ def _get_parameters(link, encoding):
         location = get_location(link, field)
         field_description = _get_field_description(field)
         field_type = _get_field_type(field)
+        field_format = _get_field_format(field)
         if location == 'form':
             if encoding in ('multipart/form-data', 'application/x-www-form-urlencoded'):
                 # 'formData' in swagger MUST be one of these media types.
@@ -152,6 +157,8 @@ def _get_parameters(link, encoding):
                 }
                 if field_type == 'array':
                     parameter['items'] = {'type': 'string'}
+                if field_format:
+                    parameter['format'] = field_format
                 parameters.append(parameter)
             else:
                 # Expand coreapi fields with location='form' into a single swagger
@@ -179,6 +186,8 @@ def _get_parameters(link, encoding):
                 'description': field_description,
                 'schema': schema
             }
+            if field_format:
+                parameter['format'] = field_format
             parameters.append(parameter)
         else:
             parameter = {
@@ -190,6 +199,8 @@ def _get_parameters(link, encoding):
             }
             if field_type == 'array':
                 parameter['items'] = {'type': 'string'}
+            if field_format:
+                parameter['format'] = field_format
             parameters.append(parameter)
 
     if properties:
diff --git a/tests/test_encode.py b/tests/test_encode.py
index 429a9f0..e344700 100644
--- a/tests/test_encode.py
+++ b/tests/test_encode.py
@@ -106,3 +106,48 @@ def test_expected_fields(self):
             'type': 'string'  # Everything is a string for now.
         }
         self.assertEquals(self.swagger[0], expected)
+
+
+class TestFormat(TestCase):
+    def setUp(self):
+        self.field = coreapi.Field(
+            name='published_before',
+            required=True,
+            location='query',
+            schema=coreschema.String(description='Filter by published date.', format='date')
+        )
+        self.swagger = _get_parameters(coreapi.Link(fields=[self.field]), encoding='')
+
+    def test_expected_fields(self):
+        self.assertEquals(len(self.swagger), 1)
+        expected = {
+            'name': self.field.name,
+            'required': self.field.required,
+            'in': 'query',
+            'description': self.field.schema.description,
+            'type': 'string',
+            'format': 'date'
+        }
+        self.assertEquals(self.swagger[0], expected)
+
+
+class TestIntegerField(TestCase):
+    def setUp(self):
+        self.field = coreapi.Field(
+            name='page',
+            required=True,
+            location='query',
+            schema=coreschema.Integer(description='A page number.')
+        )
+        self.swagger = _get_parameters(coreapi.Link(fields=[self.field]), encoding='')
+
+    def test_expected_fields(self):
+        self.assertEquals(len(self.swagger), 1)
+        expected = {
+            'name': self.field.name,
+            'required': self.field.required,
+            'in': 'query',
+            'description': self.field.schema.description,
+            'type': 'integer'
+        }
+        self.assertEquals(self.swagger[0], expected)