diff --git a/src/validate/formatter/Number.js b/src/validate/formatter/Number.js
new file mode 100644
index 0000000..4adf3c8
--- /dev/null
+++ b/src/validate/formatter/Number.js
@@ -0,0 +1,88 @@
+/**
+ * Number formatter
+ *
+ *  Copyright (C) 2016 LoVullo Associates, Inc.
+ *
+ *  This file is part of liza.
+ *
+ *  liza is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+var Trait              = require( 'easejs' ).Trait,
+    ValidatorFormatter = require( '../ValidatorFormatter' );
+
+
+/**
+ * Formats insurance limit(s)
+ */
+module.exports = Trait( 'Number' )
+    .implement( ValidatorFormatter )
+    .extend(
+{
+    /**
+     * Parse item as a number
+     *
+     * @param {string} data data to parse
+     *
+     * @return {string} data formatted for storage
+     */
+    'virtual abstract override public parse': function( data )
+    {
+        return this.__super( data ).replace( /[ ,]/g, '' );
+    },
+
+
+    /**
+     * Format number with thousands separators
+     *
+     * @param {string} data data to format for display
+     *
+     * @return {string} data formatted for display
+     */
+    'virtual abstract override public retrieve': function( data )
+    {
+        return this.styleNumber( this.__super( data ) );
+    },
+
+
+    /**
+     * Style number with thousands separators
+     *
+     * @param {string} number number to style (digits only)
+     *
+     * @return {string} formatted number
+     */
+    'virtual protected styleNumber': function( number )
+    {
+        var i     = number.length,
+            ret   = [],
+            chunk = '';
+
+        do
+        {
+            i -= 3;
+
+            // the second argument will adjust the length of the chunk
+            // if I is negative (e.g. 3 + -2 = 1)
+            chunk = number.substr(
+                ( i < 0 ) ? 0 : i,
+                Math.min( 3, 3 + i )
+            );
+
+            ret.unshift( chunk );
+        } while ( i > 0 );
+
+        return ret.join( ',' );
+    }
+} );
\ No newline at end of file
diff --git a/test/validate/formatter/NumberTest.js b/test/validate/formatter/NumberTest.js
new file mode 100644
index 0000000..74d2595
--- /dev/null
+++ b/test/validate/formatter/NumberTest.js
@@ -0,0 +1,50 @@
+/**
+ * Number formatter test
+ *
+ *  Copyright (C) 2016 LoVullo Associates, Inc.
+ *
+ *  This file is part of liza.
+ *
+ *  liza is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+var liza          = require( '../../../' ),
+    Sut           = liza.validate.formatter.Number,
+    EchoFormatter = liza.validate.formatter.EchoFormatter,
+    common        = require( './common' );
+
+
+describe( 'validate.formatter.Number', function()
+{
+    common.testValidate( EchoFormatter.use( Sut )(), {
+        "1":           [ "1",      "1"     ],
+        "123":         [ "123",    "123"   ],
+        "12345":       [ "12345", "12,345" ],
+        "12,345":      [ "12345", "12,345" ],
+        ",12,345":     [ "12345", "12,345" ],
+        "12,345,":     [ "12345", "12,345" ],
+        "  12,345  ,": [ "12345", "12,345" ],
+        "  1,  ,":     [ "1",     "1"      ],
+    } );
+
+
+    common.testMixin(
+        EchoFormatter,
+        Sut,
+        '123',
+        '4567',
+        '1234567',
+        '1,234,567'
+    );
+} );