diff --git a/src/ytdl_sub/script/parser.py b/src/ytdl_sub/script/parser.py
index 5d6ee489..d00a9488 100644
--- a/src/ytdl_sub/script/parser.py
+++ b/src/ytdl_sub/script/parser.py
@@ -73,6 +73,10 @@ def _is_numeric_start(char: str) -> bool:
     return char.isnumeric() or char == "-"
 
 
+def _is_breakable(char: str) -> bool:
+    return char in ["}", ",", ")", "]"] or char.isspace()
+
+
 class _Parser:
     def __init__(self, text: str):
         self._text = text
@@ -118,7 +122,7 @@ class _Parser:
             if ch.isspace() and not var_name:
                 self._pos += 1
                 continue
-            if ch in ["}", ",", ")", "]"] or ch.isspace():
+            if _is_breakable(ch):
                 break
 
             is_lower = ch.isascii() and ch.islower()
@@ -146,7 +150,7 @@ class _Parser:
             if ch.isspace() and not var_name:
                 self._pos += 1
                 continue
-            if ch in ["}", ",", ")", "]"] or ch.isspace():
+            if _is_breakable(ch):
                 break
 
             is_numeric = ch.isnumeric()
@@ -185,8 +189,11 @@ class _Parser:
             elif ch.isnumeric():
                 self._pos += 1
                 numeric_string += ch
-            else:
+            elif _is_breakable(ch):
                 break
+            else:
+                self._set_highlight_position()
+                raise NUMERICS_INVALID_CHAR
 
         if numeric_string == "." or numeric_string == "-":
             raise NUMERICS_INVALID_CHAR
diff --git a/tests/unit/script/types/test_float.py b/tests/unit/script/types/test_float.py
new file mode 100644
index 00000000..d00ae412
--- /dev/null
+++ b/tests/unit/script/types/test_float.py
@@ -0,0 +1,62 @@
+import re
+from typing import Tuple
+
+import pytest
+
+from ytdl_sub.script.parser import NUMERICS_INVALID_CHAR
+from ytdl_sub.script.parser import NUMERICS_ONLY_ARGS
+from ytdl_sub.script.parser import UNEXPECTED_CHAR_ARGUMENT
+from ytdl_sub.script.parser import UNEXPECTED_COMMA_ARGUMENT
+from ytdl_sub.script.parser import ArgumentParser
+from ytdl_sub.script.script import Script
+from ytdl_sub.script.types.array import ResolvedArray
+from ytdl_sub.script.types.resolvable import Float
+from ytdl_sub.script.types.resolvable import Integer
+from ytdl_sub.script.types.resolvable import String
+from ytdl_sub.script.utils.exceptions import InvalidSyntaxException
+
+
+class TestFloat:
+    @pytest.mark.parametrize(
+        "integer",
+        [
+            "{1.0}",
+            "{  1.2  }",
+            "{-1.4}",
+            "{   -1.5   }",
+            "{0001.2}",
+            "{  0001.5   }",
+        ],
+    )
+    def test_float_not_arg(self, integer: str):
+        with pytest.raises(InvalidSyntaxException, match=re.escape(str(NUMERICS_ONLY_ARGS))):
+            Script({"float": integer}).resolve()
+
+    @pytest.mark.parametrize(
+        "float_, expected_float",
+        [
+            ("{%float(1.1)}", 1.1),
+            ("{%float(  1.2345  )}", 1.2345),
+            ("{%float(-1.34)}", -1.34),
+            ("{%float(   -1.535   )}", -1.535),
+            ("{%float(0001.)}", 1.0),
+            ("{%float(  0001.   )}", 1.0),
+        ],
+    )
+    def test_float(self, float_: str, expected_float: int):
+        assert Script({"float": float_}).resolve() == {"float": Float(expected_float)}
+
+    @pytest.mark.parametrize(
+        "float_",
+        [
+            "{%add(0, --1.0)}",
+            "{%add(0,  1-.0  )}",
+            "{%add(0,-1.0.)}",
+            "{%add(0,   -1.0.   )}",
+            "{%add(0,0001.a)}",
+            "{%add(0,  0001.-   )}",
+        ],
+    )
+    def test_invalid_float(self, float_: str):
+        with pytest.raises(InvalidSyntaxException, match=re.escape(str(NUMERICS_INVALID_CHAR))):
+            Script({"float": float_}).resolve()