diff --git a/src/components/ha-attributes.js b/src/components/ha-attributes.js
deleted file mode 100644
index 1a1836c2f2..0000000000
--- a/src/components/ha-attributes.js
+++ /dev/null
@@ -1,91 +0,0 @@
-import "@polymer/iron-flex-layout/iron-flex-layout-classes";
-import { html } from "@polymer/polymer/lib/utils/html-tag";
-import { PolymerElement } from "@polymer/polymer/polymer-element";
-
-import hassAttributeUtil from "../util/hass-attributes-util";
-
-class HaAttributes extends PolymerElement {
-  static get template() {
-    return html`
-      <style include="iron-flex iron-flex-alignment"></style>
-      <style>
-        .data-entry .value {
-          max-width: 200px;
-          overflow-wrap: break-word;
-        }
-        .attribution {
-          color: var(--secondary-text-color);
-          text-align: right;
-        }
-      </style>
-
-      <div class="layout vertical">
-        <template
-          is="dom-repeat"
-          items="[[computeDisplayAttributes(stateObj, filtersArray)]]"
-          as="attribute"
-        >
-          <div class="data-entry layout justified horizontal">
-            <div class="key">[[formatAttribute(attribute)]]</div>
-            <div class="value">
-              [[formatAttributeValue(stateObj, attribute)]]
-            </div>
-          </div>
-        </template>
-        <div class="attribution" hidden$="[[!computeAttribution(stateObj)]]">
-          [[computeAttribution(stateObj)]]
-        </div>
-      </div>
-    `;
-  }
-
-  static get properties() {
-    return {
-      stateObj: {
-        type: Object,
-      },
-      extraFilters: {
-        type: String,
-        value: "",
-      },
-      filtersArray: {
-        type: Array,
-        computed: "computeFiltersArray(extraFilters)",
-      },
-    };
-  }
-
-  computeFiltersArray(extraFilters) {
-    return Object.keys(hassAttributeUtil.LOGIC_STATE_ATTRIBUTES).concat(
-      extraFilters ? extraFilters.split(",") : []
-    );
-  }
-
-  computeDisplayAttributes(stateObj, filtersArray) {
-    if (!stateObj) {
-      return [];
-    }
-    return Object.keys(stateObj.attributes).filter(function(key) {
-      return filtersArray.indexOf(key) === -1;
-    });
-  }
-
-  formatAttribute(attribute) {
-    return attribute.replace(/_/g, " ");
-  }
-
-  formatAttributeValue(stateObj, attribute) {
-    var value = stateObj.attributes[attribute];
-    if (value === null) return "-";
-    if (Array.isArray(value)) {
-      return value.join(", ");
-    }
-    return value instanceof Object ? JSON.stringify(value, null, 2) : value;
-  }
-
-  computeAttribution(stateObj) {
-    return stateObj.attributes.attribution;
-  }
-}
-
-customElements.define("ha-attributes", HaAttributes);
diff --git a/src/components/ha-attributes.ts b/src/components/ha-attributes.ts
new file mode 100644
index 0000000000..d2eab599fe
--- /dev/null
+++ b/src/components/ha-attributes.ts
@@ -0,0 +1,97 @@
+import {
+  property,
+  LitElement,
+  TemplateResult,
+  html,
+  CSSResult,
+  css,
+  customElement,
+} from "lit-element";
+import { HassEntity } from "home-assistant-js-websocket";
+
+import hassAttributeUtil from "../util/hass-attributes-util";
+
+@customElement("ha-attributes")
+class HaAttributes extends LitElement {
+  @property() public stateObj?: HassEntity;
+  @property() public extraFilters?: string;
+
+  protected render(): TemplateResult | void {
+    if (!this.stateObj) {
+      return html``;
+    }
+
+    return html`
+      <div>
+        ${this.computeDisplayAttributes(
+          Object.keys(hassAttributeUtil.LOGIC_STATE_ATTRIBUTES).concat(
+            this.extraFilters ? this.extraFilters.split(",") : []
+          )
+        ).map(
+          (attribute) => html`
+            <div class="data-entry">
+              <div class="key">${attribute.replace(/_/g, " ")}</div>
+              <div class="value">
+                ${this.formatAttributeValue(attribute)}
+              </div>
+            </div>
+          `
+        )}
+        ${this.stateObj.attributes.attribution
+          ? html`
+              <div class="attribution">
+                ${this.stateObj.attributes.attribution}
+              </div>
+            `
+          : ""}
+      </div>
+    `;
+  }
+
+  static get styles(): CSSResult {
+    return css`
+      .data-entry {
+        display: flex;
+        flex-direction: row;
+        justify-content: space-between;
+      }
+      .data-entry .value {
+        max-width: 200px;
+        overflow-wrap: break-word;
+      }
+      .attribution {
+        color: var(--secondary-text-color);
+        text-align: right;
+      }
+    `;
+  }
+
+  private computeDisplayAttributes(filtersArray: string[]): string[] {
+    if (!this.stateObj) {
+      return [];
+    }
+    return Object.keys(this.stateObj.attributes).filter((key) => {
+      return filtersArray.indexOf(key) === -1;
+    });
+  }
+
+  private formatAttributeValue(attribute: string): string {
+    if (!this.stateObj) {
+      return "-";
+    }
+    const value = this.stateObj.attributes[attribute];
+    if (value === null) {
+      return "-";
+    }
+    if (Array.isArray(value)) {
+      return value.join(", ");
+    }
+    return value instanceof Object ? JSON.stringify(value, null, 2) : value;
+  }
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    "ha-attributes": HaAttributes;
+  }
+}