diff --git a/src/sammo/DTO/Converter/DateTimeConverter.php b/src/sammo/DTO/Converter/DateTimeConverter.php
new file mode 100644
index 00000000..187782d8
--- /dev/null
+++ b/src/sammo/DTO/Converter/DateTimeConverter.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace sammo\DTO\Converter;
+
+use sammo\TimeUtil;
+
+class DateTimeConverter implements Converter
+{
+  protected bool $useFraction;
+  public function __construct(private array $types, ...$args)
+  {
+    if(count($args) > 0) {
+      if(!is_bool($args[0])) {
+        throw new \Exception('DateTimeConverter constructor argument must be boolean');
+      }
+      $this->useFraction = $args[0];
+    } else {
+      $this->useFraction = false;
+    }
+  }
+
+  public function convertFrom(string|array|int|float|bool|null $raw): mixed
+  {
+    if ($raw === null && array_search('null', $this->types, true) !== false) {
+      return null;
+    }
+    if (!is_string($raw)){
+      throw new \Exception('DateTimeConverter can not convert non-string');
+    }
+    if (array_search('DateTime', $this->types, true) === false) {
+      return new \DateTime($raw);
+    }
+    return new \DateTimeImmutable($raw);
+  }
+
+  public function convertTo(mixed $data): string|array|int|float|bool|null
+  {
+    if ($data === null && array_search('null', $this->types, true) !== false) {
+      return null;
+    }
+    if (!$data instanceof \DateTimeInterface) {
+      throw new \Exception('DateTimeConverter can not convert non-DateTimeInterface');
+    }
+    return TimeUtil::format($data, $this->useFraction);
+  }
+}