diff --git a/test/fuzzers/BUILD.gn b/test/fuzzers/BUILD.gn
index 8bf6f62ac4..290db38e39 100644
--- a/test/fuzzers/BUILD.gn
+++ b/test/fuzzers/BUILD.gn
@@ -577,3 +577,13 @@ webrtc_fuzzer_test("field_trial_fuzzer") {
   ]
   seed_corpus = "corpora/field_trial-corpus"
 }
+
+webrtc_fuzzer_test("string_to_number_fuzzer") {
+  sources = [
+    "string_to_number_fuzzer.cc",
+  ]
+  deps = [
+    "../../rtc_base:rtc_base_approved",
+  ]
+  seed_corpus = "corpora/string_to_number-corpus"
+}
diff --git a/test/fuzzers/corpora/string_to_number-corpus/0 b/test/fuzzers/corpora/string_to_number-corpus/0
new file mode 100644
index 0000000000..fbfcbf9105
--- /dev/null
+++ b/test/fuzzers/corpora/string_to_number-corpus/0
@@ -0,0 +1 @@
+90742757
diff --git a/test/fuzzers/corpora/string_to_number-corpus/1 b/test/fuzzers/corpora/string_to_number-corpus/1
new file mode 100644
index 0000000000..587611a1d6
--- /dev/null
+++ b/test/fuzzers/corpora/string_to_number-corpus/1
@@ -0,0 +1 @@
+27.70727677
diff --git a/test/fuzzers/corpora/string_to_number-corpus/2 b/test/fuzzers/corpora/string_to_number-corpus/2
new file mode 100644
index 0000000000..45a4fb75db
--- /dev/null
+++ b/test/fuzzers/corpora/string_to_number-corpus/2
@@ -0,0 +1 @@
+8
diff --git a/test/fuzzers/corpora/string_to_number-corpus/3 b/test/fuzzers/corpora/string_to_number-corpus/3
new file mode 100644
index 0000000000..a0a162047c
--- /dev/null
+++ b/test/fuzzers/corpora/string_to_number-corpus/3
@@ -0,0 +1 @@
+0.0001
diff --git a/test/fuzzers/corpora/string_to_number-corpus/4 b/test/fuzzers/corpora/string_to_number-corpus/4
new file mode 100644
index 0000000000..da24ab1137
--- /dev/null
+++ b/test/fuzzers/corpora/string_to_number-corpus/4
@@ -0,0 +1 @@
+27277272727272727272
diff --git a/test/fuzzers/corpora/string_to_number-corpus/5 b/test/fuzzers/corpora/string_to_number-corpus/5
new file mode 100644
index 0000000000..575c0a830c
--- /dev/null
+++ b/test/fuzzers/corpora/string_to_number-corpus/5
@@ -0,0 +1 @@
+999999999999999999999999999999999999999999999999999999999999999999999999999999
diff --git a/test/fuzzers/string_to_number_fuzzer.cc b/test/fuzzers/string_to_number_fuzzer.cc
new file mode 100644
index 0000000000..ae4e394a56
--- /dev/null
+++ b/test/fuzzers/string_to_number_fuzzer.cc
@@ -0,0 +1,34 @@
+/*
+ *  Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+#include <string>
+
+#include "rtc_base/string_to_number.h"
+
+namespace webrtc {
+
+void FuzzOneInput(const uint8_t* data, size_t size) {
+  std::string number_to_parse(reinterpret_cast<const char*>(data), size);
+  rtc::StringToNumber<int8_t>(number_to_parse);
+  rtc::StringToNumber<int16_t>(number_to_parse);
+  rtc::StringToNumber<int32_t>(number_to_parse);
+  rtc::StringToNumber<int64_t>(number_to_parse);
+  rtc::StringToNumber<uint8_t>(number_to_parse);
+  rtc::StringToNumber<uint16_t>(number_to_parse);
+  rtc::StringToNumber<uint32_t>(number_to_parse);
+  rtc::StringToNumber<uint64_t>(number_to_parse);
+  rtc::StringToNumber<float>(number_to_parse);
+  rtc::StringToNumber<double>(number_to_parse);
+  rtc::StringToNumber<long double>(number_to_parse);
+}
+
+}  // namespace webrtc