diff --git a/esphome/core/helpers.h b/esphome/core/helpers.h
index 94921e1d088..72bd3a0c6ba 100644
--- a/esphome/core/helpers.h
+++ b/esphome/core/helpers.h
@@ -887,6 +887,16 @@ constexpr uint8_t sum_bytes(const uint8_t *data, size_t len, uint8_t sum = 0) {
   return std::accumulate(data, data + len, sum);
 }
 
+/// Add up the bytes of \p data with size \p len, truncated to 16 bits.
+constexpr uint16_t sum16_bytes(const uint8_t *data, size_t len, uint16_t sum = 0) {
+  return std::accumulate(data, data + len, sum);
+}
+
+/// XOR the bytes of \p data with size \p len, starting from \p init.
+constexpr uint8_t xor_bytes(const uint8_t *data, size_t len, uint8_t init = 0) {
+  return std::accumulate(data, data + len, init, std::bit_xor<>());
+}
+
 /// Calculate a CRC-8 checksum of \p data with size \p len.
 uint8_t crc8(const uint8_t *data, uint8_t len, uint8_t crc = 0x00, uint8_t poly = 0x8C, bool msb_first = false);
 
diff --git a/tests/components/core/helpers_test.cpp b/tests/components/core/helpers_test.cpp
index 92a7f841830..499aea5a8ad 100644
--- a/tests/components/core/helpers_test.cpp
+++ b/tests/components/core/helpers_test.cpp
@@ -78,6 +78,24 @@ TEST(HelpersTest, SumBytes) {
   static_assert(sum_bytes(FRAME, 2) == 0xEB, "usable in constant expressions");
 }
 
+TEST(HelpersTest, Sum16Bytes) {
+  static constexpr uint8_t FRAME[] = {0x42, 0x4D, 0xE1, 0x00, 0x01};
+  EXPECT_EQ(sum16_bytes(FRAME, sizeof(FRAME)), 0x0171);  // the PMSx003 active mode command checksum
+  EXPECT_EQ(sum16_bytes(FRAME, 0), 0);
+  EXPECT_EQ(sum16_bytes(FRAME, sizeof(FRAME), 0x1234), 0x13A5);
+  EXPECT_EQ(sum16_bytes(FRAME, sizeof(FRAME), 0xFFFF), 0x0170);  // wraps at 16 bits
+  static_assert(sum16_bytes(FRAME, 2) == 0x8F, "usable in constant expressions");
+}
+
+TEST(HelpersTest, XorBytes) {
+  static constexpr uint8_t FRAME[] = {0x01, 0x03, 0x00, 0x15, 0x00};
+  EXPECT_EQ(xor_bytes(FRAME + 1, 3, 0xFF), 0xE9);  // the Z-Wave GetVersion frame checksum
+  EXPECT_EQ(xor_bytes(FRAME, 0), 0);
+  EXPECT_EQ(xor_bytes(FRAME, 0, 0x5A), 0x5A);
+  EXPECT_EQ(xor_bytes(FRAME, sizeof(FRAME)), 0x17);
+  static_assert(xor_bytes(FRAME, 2) == 0x02, "usable in constant expressions");
+}
+
 TEST(StaticVectorTest, ConvertingConstructorFromSmaller) {
   StaticVector<uint8_t, 5> small{0x03, 0x00, 0x10, 0x00, 0x01};
   StaticVector<uint8_t, 253> big = small;