1diff --git a/src/Helpers.ts b/src/Helpers.ts
 2deleted file mode 100644
 3index 6a4b18f..0000000
 4--- a/src/Helpers.ts
 5+++ /dev/null
 6@@ -1,27 +0,0 @@
 7-var Helpers = {
 8-  number: function (num) {
 9-    var reg = new RegExp('(^[-+]?([0-9]+)(\.[0-9]+)?)$');
10-    switch (typeof num) {
11-      case 'number':
12-        return num;
13-      case 'string':
14-        var t = num.trim();
15-        if (!isNaN(t)) {
16-          if (reg.test(t.trim())) {
17-            if (t.indexOf('.') > -1) {
18-              return parseFloat(t);
19-            } else {
20-              return parseInt(t, 10);
21-            }
22-          } else {
23-            return 0;
24-          }
25-        }
26-    }
27-    return num;
28-  }
29-};
30-
31-export {
32-  Helpers
33-}
34\ No newline at end of file
35diff --git a/src/Sheet.ts b/src/Sheet.ts
36index 8a42060..3194839 100644
37--- a/src/Sheet.ts
38+++ b/src/Sheet.ts
39@@ -1,9 +1,9 @@
40 /// <reference path="parser.d.ts"/>
41 import { Parser } from "./Parser";
42 import { Cell } from "./Cell"
43-import {DivZeroError, RefError, NameError} from "./Errors"
44-import { Helpers } from "./Helpers";
45+import { DivZeroError, RefError, NameError } from "./Errors"
46 import { Formulas } from "./Formulas";
47+import { TypeConverter } from "./Utilities/TypeConverter";
48 
49 
50 /**
51@@ -335,7 +335,10 @@ var Sheet = (function () {
52   };
53 
54   var helper = {
55-    number: Helpers.number,
56+    /**
57+     * Is the value a number or can the value be interpreted as a number
58+     */
59+    number: TypeConverter.valueToNumber,
60 
61     string: function (str) {
62       return str.substring(1, str.length - 1);
63diff --git a/tests/Formulas/HelperTest.ts b/tests/Formulas/HelperTest.ts
64deleted file mode 100644
65index e33b84a..0000000
66--- a/tests/Formulas/HelperTest.ts
67+++ /dev/null
68@@ -1,21 +0,0 @@
69-import {
70-  Helpers
71-} from "../../src/Helpers";
72-import {
73-  assertEquals,
74-  test
75-} from "../utils/Asserts"
76-
77-test("Helpers.number", function(){
78-  assertEquals(-1, Helpers.number("-1"));
79-  assertEquals(1, Helpers.number("+1"));
80-  assertEquals(1.8239817293871983e+28, Helpers.number("18239817293871982379817157562"));
81-  assertEquals(1.8239817293871983e+28, Helpers.number("+18239817293871982379817157562"));
82-  assertEquals(-1.8239817293871983e+28, Helpers.number("-18239817293871982379817157562"));
83-  assertEquals(0, Helpers.number("10."));
84-  assertEquals(111, Helpers.number("000111"));
85-  assertEquals("10 + 10", Helpers.number("10 + 10"));
86-  assertEquals("10/10", Helpers.number("10/10"));
87-  assertEquals("10*10", Helpers.number("10*10"));
88-  assertEquals(10.18239817293872, Helpers.number("10.18239817293871982379817157562"));
89-});