diff --git a/include/fmt/format.h b/include/fmt/format.h
index f74ad7a9..1bf3bebe 100644
--- a/include/fmt/format.h
+++ b/include/fmt/format.h
@@ -3354,8 +3354,11 @@ FMT_CONSTEXPR20 void format_hexfloat(Float value, format_specs specs,
     const int shift = ((print_xdigits - specs.precision - 1) * 4);
     const auto mask = carrier_uint(0xF) << shift;
     const auto v = static_cast<uint32_t>((f.f & mask) >> shift);
+    // Round half to even like printf.
+    const bool odd = ((f.f >> (shift + 4)) & 1) != 0;
+    const bool rest_is_zero = (f.f & ((carrier_uint(1) << shift) - 1)) == 0;
 
-    if (v >= 8) {
+    if (v > 8 || (v == 8 && (odd || !rest_is_zero))) {
       const auto inc = carrier_uint(1) << (shift + 4);
       f.f += inc;
       f.f &= ~(inc - 1);
diff --git a/test/format-test.cc b/test/format-test.cc
index c44db6ab..6a403967 100644
--- a/test/format-test.cc
+++ b/test/format-test.cc
@@ -1749,6 +1749,11 @@ TEST(format_test, format_double) {
   }
 
   EXPECT_EQ(fmt::format("{:.10a}", 4.2), "0x1.0ccccccccdp+2");
+  // Ties round to even like printf.
+  EXPECT_EQ(fmt::format("{:.1a}", 1.03125), "0x1.0p+0");
+  EXPECT_EQ(fmt::format("{:.1a}", 1.09375), "0x1.2p+0");
+  EXPECT_EQ(fmt::format("{:.1a}", 1.0322265625), "0x1.1p+0");
+  EXPECT_EQ(fmt::format("{:.1A}", 1.03125f), "0X1.0P+0");
 
   EXPECT_EQ(fmt::format("{:a}", -42.0), "-0x1.5p+5");
   EXPECT_EQ(fmt::format("{:A}", -42.0), "-0X1.5P+5");