diff --git a/src/main/java/com/moandjiezana/toml/ExponentConverter.java b/src/main/java/com/moandjiezana/toml/ExponentConverter.java
new file mode 100644
index 0000000..9066c6c
--- /dev/null
+++ b/src/main/java/com/moandjiezana/toml/ExponentConverter.java
@@ -0,0 +1,21 @@
+package com.moandjiezana.toml;
+
+import static com.moandjiezana.toml.ValueConverterUtils.parse;
+import static com.moandjiezana.toml.ValueConverterUtils.parser;
+
+class ExponentConverter implements ValueConverter {
+  
+  public static final ExponentConverter EXPONENT_PARSER = new ExponentConverter();
+
+  @Override
+  public boolean canConvert(String s) {
+    return parse(parser().Exponent(), s) != null;
+  }
+
+  @Override
+  public Object convert(String s) {
+    String[] exponentString = ((String) parse(parser().Exponent(), s).get(0)).split("[eE]");
+    
+    return Math.pow(Double.parseDouble(exponentString[0]), Double.parseDouble(exponentString[1]));
+  }
+}
diff --git a/src/main/java/com/moandjiezana/toml/FloatConverter.java b/src/main/java/com/moandjiezana/toml/FloatConverter.java
index 07f8e3c..47c75c5 100644
--- a/src/main/java/com/moandjiezana/toml/FloatConverter.java
+++ b/src/main/java/com/moandjiezana/toml/FloatConverter.java
@@ -6,7 +6,7 @@ import java.util.regex.Pattern;
 class FloatConverter implements ValueConverter {
 
   public static final FloatConverter FLOAT_PARSER = new FloatConverter();
-  private static final Pattern FLOAT_REGEX = Pattern.compile("(-?\\d+\\.\\d+)(.*)");
+  private static final Pattern FLOAT_REGEX = Pattern.compile("([+-]?\\d+\\.\\d+)(.*)");
   
   @Override
   public boolean canConvert(String s) {
diff --git a/src/main/java/com/moandjiezana/toml/ValueConverters.java b/src/main/java/com/moandjiezana/toml/ValueConverters.java
index c7c809f..de23fa6 100644
--- a/src/main/java/com/moandjiezana/toml/ValueConverters.java
+++ b/src/main/java/com/moandjiezana/toml/ValueConverters.java
@@ -3,6 +3,7 @@ package com.moandjiezana.toml;
 import static com.moandjiezana.toml.ArrayConverter.ARRAY_PARSER;
 import static com.moandjiezana.toml.BooleanConverter.BOOLEAN_PARSER;
 import static com.moandjiezana.toml.DateConverter.DATE_PARSER;
+import static com.moandjiezana.toml.ExponentConverter.EXPONENT_PARSER;
 import static com.moandjiezana.toml.FloatConverter.FLOAT_PARSER;
 import static com.moandjiezana.toml.IntegerConverter.INTEGER_PARSER;
 import static com.moandjiezana.toml.LiteralStringConverter.LITERAL_STRING_PARSER;
@@ -14,7 +15,7 @@ import static com.moandjiezana.toml.ValueConverterUtils.INVALID;
 class ValueConverters {
   
   private static final ValueConverter[] PARSERS = { 
-    MULTILINE_STRING_PARSER, MULTILINE_LITERAL_STRING_CONVERTER, LITERAL_STRING_PARSER, STRING_PARSER, DATE_PARSER, INTEGER_PARSER, FLOAT_PARSER, BOOLEAN_PARSER, ARRAY_PARSER
+    MULTILINE_STRING_PARSER, MULTILINE_LITERAL_STRING_CONVERTER, LITERAL_STRING_PARSER, STRING_PARSER, DATE_PARSER, EXPONENT_PARSER, INTEGER_PARSER, FLOAT_PARSER, BOOLEAN_PARSER, ARRAY_PARSER
   };
 
   public Object convert(String value) {
diff --git a/src/main/java/com/moandjiezana/toml/ValueParser.java b/src/main/java/com/moandjiezana/toml/ValueParser.java
index 3bceb41..8ab4017 100644
--- a/src/main/java/com/moandjiezana/toml/ValueParser.java
+++ b/src/main/java/com/moandjiezana/toml/ValueParser.java
@@ -48,7 +48,11 @@ class ValueParser extends BaseParser<List<Object>> {
   }
   
   public Rule Integer() {
-    return Sequence(startList(), Sequence(Sequence(Optional(AnyOf("+-")), OneOrMore(CharRange('0', '9'))), pushToken(match())), endList(), Comment());
+    return Sequence(startList(), Sequence(SignedNumber(), pushToken(match())), endList(), Comment());
+  }
+  
+  public Rule Exponent() {
+    return Sequence(startList(), Sequence(Sequence(SignedNumber(), Optional(Sequence('.', Number())), FirstOf('e', 'E'), SignedNumber()), pushToken(match())), endList(), Comment());
   }
 
   Rule NonEmptyArray() {
@@ -70,6 +74,14 @@ class ValueParser extends BaseParser<List<Object>> {
   Rule EmptyArray() {
     return Sequence('[', ']', startList(), endList());
   }
+  
+  Rule SignedNumber() {
+    return Sequence(Optional(AnyOf("+-")), Number());
+  }
+  
+  Rule Number() {
+    return OneOrMore(CharRange('0', '9'));
+  }
 
   Rule OtherValue() {
     return Sequence(ZeroOrMore(NoneOf("],")), pushToken(match()));
diff --git a/src/test/java/com/moandjiezana/toml/TomlTest.java b/src/test/java/com/moandjiezana/toml/TomlTest.java
index 9791e39..d90b0d8 100644
--- a/src/test/java/com/moandjiezana/toml/TomlTest.java
+++ b/src/test/java/com/moandjiezana/toml/TomlTest.java
@@ -158,6 +158,25 @@ public class TomlTest {
 
     assertEquals(-5.25D, toml.getDouble("double").doubleValue(), 0.0);
   }
+  
+  @Test
+  public void should_get_double_with_a_plus_sign() throws Exception {
+    Toml toml = new Toml().parse("double = +5.25");
+
+    assertEquals(5.25D, toml.getDouble("double").doubleValue(), 0.0);
+  }
+  
+  @Test
+  public void should_get_exponent() throws Exception {
+    Toml toml = new Toml().parse("lower_case = 1e6\nupper_case = 2E6\nwith_plus = 5e+22\nboth_plus = +5E+22\nnegative = -2E-2\nfractional = 6.626e-34");
+
+    assertEquals(Math.pow(1, 6), toml.getDouble("lower_case"), 0.0);
+    assertEquals(Math.pow(2, 6), toml.getDouble("upper_case"), 0.0);
+    assertEquals(Math.pow(5, 22), toml.getDouble("with_plus"), 0.0);
+    assertEquals(Math.pow(5, 22), toml.getDouble("both_plus"), 0.0);
+    assertEquals(Math.pow(-2, -2), toml.getDouble("negative"), 0.0);
+    assertEquals(Math.pow(6.626D, -34), toml.getDouble("fractional"), 0.0);
+  }
 
   @Test
   public void should_get_table() throws Exception {