diff --git a/src/Converter.php b/src/Converter.php
index e1783bf..ac480db 100644
--- a/src/Converter.php
+++ b/src/Converter.php
@@ -2,12 +2,14 @@
 
 namespace Vesper\UnitConversion;
 
+use Vesper\UnitConversion\Exceptions\CannotConvertUnitException;
+
 class Converter
 {
     public function convert(Unit $from, Unit $to, float $value = 1): float
     {
         if (!$from->canConvertTo($to)) {
-            throw new \Exception("Cannot convert from [$from] to [$to]");
+            throw new CannotConvertUnitException("Cannot convert from [$from] to [$to]");
         }
 
         $fromOffset = $from->getPart(0)->getRatio() * $from->getPart(0)->getOffset();
diff --git a/src/Exceptions/CannotConvertUnitException.php b/src/Exceptions/CannotConvertUnitException.php
new file mode 100644
index 0000000..07a859e
--- /dev/null
+++ b/src/Exceptions/CannotConvertUnitException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace Vesper\UnitConversion\Exceptions;
+
+use Exception;
+
+class CannotConvertUnitException extends Exception
+{
+}
\ No newline at end of file
diff --git a/src/Exceptions/InvalidUnitException.php b/src/Exceptions/InvalidUnitException.php
new file mode 100644
index 0000000..9bd1710
--- /dev/null
+++ b/src/Exceptions/InvalidUnitException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace Vesper\UnitConversion\Exceptions;
+
+use Exception;
+
+class InvalidUnitException extends Exception
+{
+}
\ No newline at end of file
diff --git a/src/Parser.php b/src/Parser.php
index b2d7f01..62cbb8b 100644
--- a/src/Parser.php
+++ b/src/Parser.php
@@ -2,6 +2,8 @@
 
 namespace Vesper\UnitConversion;
 
+use Vesper\UnitConversion\Exceptions\InvalidUnitException;
+
 class Parser
 {
     public function __construct(protected Registry $registry)
@@ -21,7 +23,7 @@ public function parse(string $input): Unit
                 $unit = $this->registry->get($token['value']);
 
                 if ($unit === null) {
-                    throw new \Exception("Unknown unit: {$token['value']}");
+                    throw new InvalidUnitException("Unknown unit: {$token['value']}");
                 }
 
                 $powerSign = $prevToken && $prevToken['type'] === 'operator' && $prevToken['value'] === '/'
diff --git a/src/Registry.php b/src/Registry.php
index 0262744..df3ddc1 100644
--- a/src/Registry.php
+++ b/src/Registry.php
@@ -2,6 +2,8 @@
 
 namespace Vesper\UnitConversion;
 
+use Vesper\UnitConversion\Exceptions\InvalidUnitException;
+
 class Registry
 {
     protected array $registry = [];
@@ -23,12 +25,12 @@ public function alias(string $name, array|string $aliases): self
         $base = $this->get($name);
 
         if ($base === null) {
-            throw new \Exception("Cannot alias unknown unit [$name]");
+            throw new InvalidUnitException("Cannot alias unknown unit [$name]");
         }
 
         foreach ((array)$aliases as $alias) {
             if (isset($this->registry[$alias])) {
-                throw new \Exception("Name [$alias] is already registered");
+                throw new InvalidUnitException("Name [$alias] is already registered");
             }
 
             $this->registry[$alias] = $base;
diff --git a/tests/ConverterTest.php b/tests/ConverterTest.php
index 57ef102..0c8a384 100644
--- a/tests/ConverterTest.php
+++ b/tests/ConverterTest.php
@@ -5,6 +5,7 @@
 use Vesper\UnitConversion\Dimension;
 use Vesper\UnitConversion\Unit;
 use Vesper\UnitConversion\UnitPart;
+use Vesper\UnitConversion\Exceptions\CannotConvertUnitException;
 
 final class ConverterTest extends TestCase
 {
@@ -27,7 +28,7 @@ public function test_converts_incompatible_throws()
             new UnitPart(1, Dimension::LENGTH, 1),
         );
 
-        $this->expectException(\Exception::class);
+        $this->expectException(CannotConvertUnitException::class);
         $this->expectExceptionMessage("Cannot convert from [$m] to [$m2]");
 
         $this->converter->convert($m, $m2);
diff --git a/tests/ParserTest.php b/tests/ParserTest.php
index 79359cc..ad31e1e 100644
--- a/tests/ParserTest.php
+++ b/tests/ParserTest.php
@@ -5,6 +5,7 @@
 use Vesper\UnitConversion\Parser;
 use Vesper\UnitConversion\Registry;
 use Vesper\UnitConversion\RegistryBuilder;
+use Vesper\UnitConversion\Exceptions\InvalidUnitException;
 
 final class ParserTest extends TestCase
 {
@@ -169,7 +170,7 @@ public function test_ignores_whitespace()
 
     public function test_throws_on_unknown_token()
     {
-        $this->expectException(\Exception::class);
+        $this->expectException(InvalidUnitException::class);
         $this->expectExceptionMessage('Unknown unit: yeet');
 
         $this->parser->parse('kilometer / yeet');
diff --git a/tests/RegistryTest.php b/tests/RegistryTest.php
index 1aaa6b8..8e69cb5 100644
--- a/tests/RegistryTest.php
+++ b/tests/RegistryTest.php
@@ -5,6 +5,7 @@
 use Vesper\UnitConversion\Registry;
 use Vesper\UnitConversion\Unit;
 use Vesper\UnitConversion\UnitPart;
+use Vesper\UnitConversion\Exceptions\InvalidUnitException;
 
 final class RegistryTest extends TestCase
 {
@@ -42,7 +43,7 @@ public function test_alias_unknown_throws()
     {
         $this->assertNull($this->registry->get('yeet'));
 
-        $this->expectException(Exception::class);
+        $this->expectException(InvalidUnitException::class);
         $this->expectExceptionMessage('Cannot alias unknown unit [yeet]');
 
         $this->registry->alias('yeet', 'y');
@@ -50,7 +51,7 @@ public function test_alias_unknown_throws()
 
     public function test_alias_overwrite_throws()
     {
-        $this->expectException(Exception::class);
+        $this->expectException(InvalidUnitException::class);
         $this->expectExceptionMessage('Name [gram] is already registered');
 
         $this->registry->alias('gram', 'gram');