diff --git a/src/flat_map/include/sourcemeta/noa/flat_map.h b/src/flat_map/include/sourcemeta/noa/flat_map.h
index 9c38da8..2774aec 100644
--- a/src/flat_map/include/sourcemeta/noa/flat_map.h
+++ b/src/flat_map/include/sourcemeta/noa/flat_map.h
@@ -230,6 +230,10 @@ template <typename Key, typename Value, typename Hash> class FlatMap {
 #endif
   }
 
+  inline auto at(const size_type index) const noexcept -> const Entry & {
+    return this->data[index];
+  }
+
   auto erase(const key_type &key, const hash_type key_hash) -> size_type {
     const auto current_size{this->size()};
 
diff --git a/test/flat_map/flat_map_test.cc b/test/flat_map/flat_map_test.cc
index 4d7bfcd..28c0249 100644
--- a/test/flat_map/flat_map_test.cc
+++ b/test/flat_map/flat_map_test.cc
@@ -301,3 +301,23 @@ TEST(Noa_FlatMap, try_at) {
   EXPECT_TRUE(*map.try_at("0", hash));
   EXPECT_EQ(map.try_at("1", map.hash("1")), nullptr);
 }
+
+TEST(Noa_FlatMap, at_index) {
+  sourcemeta::noa::FlatMap<std::string, bool,
+                           sourcemeta::noa::StandardHash<std::string>>
+      map;
+
+  const auto hash_1{map.assign("0", true)};
+  const auto hash_2{map.assign("1", false)};
+
+  const auto &entry_1{map.at(0)};
+  const auto &entry_2{map.at(1)};
+
+  EXPECT_EQ(entry_1.first, "0");
+  EXPECT_TRUE(entry_1.second);
+  EXPECT_EQ(entry_1.hash, hash_1);
+
+  EXPECT_EQ(entry_2.first, "1");
+  EXPECT_FALSE(entry_2.second);
+  EXPECT_EQ(entry_2.hash, hash_2);
+}