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diff --git a/src/lib/util/chrono_time_utils.h b/src/lib/util/chrono_time_utils.h
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+// Copyright (C) 2015-2020 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef KEA_CHRONO_TIME_UTILS_H
+#define KEA_CHRONO_TIME_UTILS_H
+
+#include <chrono>
+#include <string>
+
+namespace isc {
+namespace util {
+
+/// @brief The number of digits of fractional seconds supplied by the
+/// underlying class, std::chrono::time_point. Typically 6 = microseconds.
+const size_t MAX_FSECS_PRECISION = 6;
+
+/// @brief Converts chrono time point structure to text
+///
+/// This is Kea implementation for converting time point to strings.
+/// @param t time point value to convert to text
+/// @param fsecs_precision number of digits of precision for fractional seconds.
+/// Zero omits the value.
+///
+/// @return a string representing time
+std::string clockToText(std::chrono::system_clock::time_point t,
+                        size_t fsecs_precision = MAX_FSECS_PRECISION);
+
+/// @brief Converts StatsDuration to text
+///
+/// See @ref clockToText for explanation why we chose our own implementation.
+/// @tparam Duration duration type instance for instance
+/// @c std::chrono::system_clock::duration.
+/// @param dur duration value to convert to text
+/// @param fsecs_precision number of digits of precision for fractional seconds.
+/// Zero omits the value.
+///
+/// @return a string representing time
+template<typename Duration>
+std::string durationToText(Duration dur,
+                           size_t fsecs_precision = MAX_FSECS_PRECISION);
+
+} // end of isc::util namespace
+} // end of isc namespace
+
+#endif