diff --git a/package.json b/package.json
index 96c290f..ac50a10 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "css-to-react-native",
-  "version": "1.0.5",
+  "version": "1.0.6",
   "description": "Convert CSS text to a React Native stylesheet object",
   "main": "dist/index.js",
   "scripts": {
diff --git a/src/grammar.ne b/src/grammar.ne
index c69a116..debbc08 100644
--- a/src/grammar.ne
+++ b/src/grammar.ne
@@ -49,8 +49,14 @@
   };
 %}
 
+int
+  -> "0" | [1-9] [0-9]:*
+
+decimal
+  -> "." [0-9]:+
+
 number
-  -> "-":? ([0-9]:? "." [0-9]:+ | [1-9] [0-9]:* | "0") {% d => Number(text(d)) %}
+  -> "-":? (int decimal | int | decimal) {% d => Number(text(d)) %}
 
 angle -> number ("deg" | "rad") {% text %}
 
diff --git a/src/index.js b/src/index.js
index 9f1be86..4434420 100644
--- a/src/index.js
+++ b/src/index.js
@@ -27,11 +27,14 @@ const transformRawValue = input => (
     : input
 );
 
+export const parseProp = (propName, value) =>
+  new nearley.Parser(grammar.ParserRules, propName).feed(value).results[0];
+
 export const getStylesForProperty = (propName, inputValue, allowShorthand) => {
   const value = inputValue.trim();
 
   const propValue = (allowShorthand && transforms.indexOf(propName) !== -1)
-    ? (new nearley.Parser(grammar.ParserRules, propName).feed(value).results[0])
+    ? parseProp(propName, value)
     : transformRawValue(value);
 
   return (propValue && propValue.$merge)
diff --git a/src/index.test.js b/src/index.test.js
index cb41e7a..c30d6ad 100644
--- a/src/index.test.js
+++ b/src/index.test.js
@@ -1,5 +1,5 @@
 /* global jest it, expect */
-import transformCss from '.';
+import transformCss, { parseProp } from '.';
 
 const runTest = (inputCss, expectedStyles) => {
   const actualStyles = transformCss(inputCss);
@@ -13,9 +13,18 @@ it('transforms numbers', () => runTest([
   ['bottom', '0'],
 ], { top: 0, left: 0, right: 0, bottom: 0 }));
 
-it('allows decimal values', () => runTest([
-  ['top', '1.5'],
-], { top: 1.5 }));
+it('allows decimal values', () => {
+  expect(parseProp('number', '0.5')).toBe(0.5);
+  expect(parseProp('number', '1.5')).toBe(1.5);
+  expect(parseProp('number', '10.5')).toBe(10.5);
+  expect(parseProp('number', '100.5')).toBe(100.5);
+  expect(parseProp('number', '-0.5')).toBe(-0.5);
+  expect(parseProp('number', '-1.5')).toBe(-1.5);
+  expect(parseProp('number', '-10.5')).toBe(-10.5);
+  expect(parseProp('number', '-100.5')).toBe(-100.5);
+  expect(parseProp('number', '.5')).toBe(0.5);
+  expect(parseProp('number', '-.5')).toBe(-0.5);
+});
 
 it('allows decimal values in transformed values', () => runTest([
   ['border-radius', '1.5'],