diff --git a/.changeset/wicked-eels-call.md b/.changeset/wicked-eels-call.md
new file mode 100644
index 0000000000..ff73fe3bb4
--- /dev/null
+++ b/.changeset/wicked-eels-call.md
@@ -0,0 +1,5 @@
+---
+'@solid-design-system/components': patch
+---
+
+Fixed the `sd-datepicker` css properties not showing in Storybook.
diff --git a/packages/components/src/components/datepicker/datepicker-converters.ts b/packages/components/src/components/datepicker/datepicker-converters.ts
new file mode 100644
index 0000000000..71966bed39
--- /dev/null
+++ b/packages/components/src/components/datepicker/datepicker-converters.ts
@@ -0,0 +1,114 @@
+export const isoDateConverter = {
+  fromAttribute(value: string | null): string | null {
+    if (!value) return null;
+
+    // normalize all separators to hyphens
+    const cleaned = value.trim().replace(/[./]/g, '-');
+
+    // acccept YYYY-MM-DD only
+    const match = cleaned.match(/^(\d{4})-(\d{2})-(\d{2})$/);
+    if (!match) return null;
+
+    const iso = `${match[1]}-${match[2]}-${match[3]}`;
+
+    // validate date
+    const d = new Date(+match[1], +match[2] - 1, +match[3]);
+    if (d.getFullYear() !== +match[1] || d.getMonth() !== +match[2] - 1 || d.getDate() !== +match[3]) {
+      return null;
+    }
+
+    return iso;
+  },
+
+  toAttribute(value: string | null): string {
+    return value ?? '';
+  }
+};
+
+export const viewMonthConverter = {
+  fromAttribute(value: string | null): Date | null {
+    if (!value) return null;
+
+    const cleaned = value.trim().replace(/[./]/g, '-');
+    let m: RegExpMatchArray | null = cleaned.match(/^(\d{2})-(\d{4})$/);
+    let month: number;
+    let year: number;
+
+    if (m) {
+      month = Number(m[1]);
+      year = Number(m[2]);
+    } else {
+      m = cleaned.match(/^(\d{4})-(\d{2})$/);
+      if (!m) return null;
+      year = Number(m[1]);
+      month = Number(m[2]);
+    }
+
+    if (!year || !month || month < 1 || month > 12) return null;
+
+    return new Date(year, month - 1, 1);
+  },
+
+  toAttribute(value: Date | null): string {
+    if (!value) return '';
+    const year = value.getFullYear();
+    const month = String(value.getMonth() + 1).padStart(2, '0');
+    return `${year}-${month}`;
+  }
+};
+
+export const disabledDatesConverter = {
+  fromAttribute(value: string | null): string[] {
+    if (!value) return [];
+
+    let rawList: string[] = [];
+
+    const trimmed = value.trim();
+
+    // arrays
+    if (trimmed.startsWith('[')) {
+      try {
+        // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
+        const parsed = JSON.parse(trimmed);
+        if (Array.isArray(parsed)) {
+          rawList = parsed.map(String);
+        }
+      } catch {
+        return [];
+      }
+    } else {
+      // space separated
+      rawList = trimmed
+        .split(/[\s,]+/)
+        .map(v => v.trim())
+        .filter(Boolean);
+    }
+
+    const result: string[] = [];
+
+    for (const raw of rawList) {
+      // replace all separators with dots
+      const cleaned = raw.replace(/[-/]/g, '.');
+      const parts = cleaned.split('.');
+
+      if (parts.length !== 3) continue;
+      const [yyyy, mm, dd] = parts.map(Number);
+
+      if (!yyyy || !mm || !dd) continue;
+
+      // validate date
+      const date = new Date(yyyy, mm - 1, dd);
+      if (date.getFullYear() !== yyyy || date.getMonth() !== mm - 1 || date.getDate() !== dd) continue;
+
+      const iso = `${yyyy}-${String(mm).padStart(2, '0')}-${String(dd).padStart(2, '0')}`;
+
+      result.push(iso);
+    }
+
+    return result;
+  },
+
+  toAttribute(value: string[] | null): string {
+    return value ? value.join(',') : '';
+  }
+};
diff --git a/packages/components/src/components/datepicker/datepicker.ts b/packages/components/src/components/datepicker/datepicker.ts
index 7bb240997a..0312340141 100644
--- a/packages/components/src/components/datepicker/datepicker.ts
+++ b/packages/components/src/components/datepicker/datepicker.ts
@@ -13,6 +13,7 @@ import cx from 'classix';
 import SolidElement from '../../internal/solid-element';
 import type { SolidFormControl } from '../../internal/solid-element';
 import type SdPopup from '../popup/popup';
+import { isoDateConverter, viewMonthConverter, disabledDatesConverter } from './datepicker-converters';
 
 /**
  * @summary Used to enter or select a date or a range of dates using a calendar view.
@@ -80,122 +81,6 @@ import type SdPopup from '../popup/popup';
  * @cssproperty --sd-datepicker__date-item--current-color-text - The text color for the current date item.
  * @cssproperty --sd-datepicker__date-item--selected--hover-color-text - The text color for selected date items in hover state.
  */
-
-const isoDateConverter = {
-  fromAttribute(value: string | null): string | null {
-    if (!value) return null;
-
-    // normalize all separators to hyphens
-    const cleaned = value.trim().replace(/[./]/g, '-');
-
-    // acccept YYYY-MM-DD only
-    const match = cleaned.match(/^(\d{4})-(\d{2})-(\d{2})$/);
-    if (!match) return null;
-
-    const iso = `${match[1]}-${match[2]}-${match[3]}`;
-
-    // validate date
-    const d = new Date(+match[1], +match[2] - 1, +match[3]);
-    if (d.getFullYear() !== +match[1] || d.getMonth() !== +match[2] - 1 || d.getDate() !== +match[3]) {
-      return null;
-    }
-
-    return iso;
-  },
-
-  toAttribute(value: string | null): string {
-    return value ?? '';
-  }
-};
-
-const viewMonthConverter = {
-  fromAttribute(value: string | null): Date | null {
-    if (!value) return null;
-
-    const cleaned = value.trim().replace(/[./]/g, '-');
-    let m: RegExpMatchArray | null = cleaned.match(/^(\d{2})-(\d{4})$/);
-    let month: number;
-    let year: number;
-
-    if (m) {
-      month = Number(m[1]);
-      year = Number(m[2]);
-    } else {
-      m = cleaned.match(/^(\d{4})-(\d{2})$/);
-      if (!m) return null;
-      year = Number(m[1]);
-      month = Number(m[2]);
-    }
-
-    if (!year || !month || month < 1 || month > 12) return null;
-
-    return new Date(year, month - 1, 1);
-  },
-
-  toAttribute(value: Date | null): string {
-    if (!value) return '';
-    const year = value.getFullYear();
-    const month = String(value.getMonth() + 1).padStart(2, '0');
-    return `${year}-${month}`;
-  }
-};
-
-const disabledDatesConverter = {
-  fromAttribute(value: string | null): string[] {
-    if (!value) return [];
-
-    let rawList: string[] = [];
-
-    const trimmed = value.trim();
-
-    // arrays
-    if (trimmed.startsWith('[')) {
-      try {
-        // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
-        const parsed = JSON.parse(trimmed);
-        if (Array.isArray(parsed)) {
-          rawList = parsed.map(String);
-        }
-      } catch {
-        return [];
-      }
-    } else {
-      // space separated
-      rawList = trimmed
-        .split(/[\s,]+/)
-        .map(v => v.trim())
-        .filter(Boolean);
-    }
-
-    const result: string[] = [];
-
-    for (const raw of rawList) {
-      // replace all separators with dots
-      const cleaned = raw.replace(/[-/]/g, '.');
-      const parts = cleaned.split('.');
-
-      if (parts.length !== 3) continue;
-      const [yyyy, mm, dd] = parts.map(Number);
-
-      if (!yyyy || !mm || !dd) continue;
-
-      // validate date
-      const date = new Date(yyyy, mm - 1, dd);
-      if (date.getFullYear() !== yyyy || date.getMonth() !== mm - 1 || date.getDate() !== dd) continue;
-
-      const iso = `${yyyy}-${String(mm).padStart(2, '0')}-${String(dd).padStart(2, '0')}`;
-
-      result.push(iso);
-    }
-
-    return result;
-  },
-
-  toAttribute(value: string[] | null): string {
-    return value ? value.join(',') : '';
-  }
-};
-
 @customElement('sd-datepicker')
 export default class SdDatepicker extends SolidElement implements SolidFormControl {
   /** Localize controller used to fetch localized terms/labels. */