diff --git a/src/bakatools/time/time.h b/src/bakatools/time/time.h
new file mode 100644
index 0000000..3c03fd1
--- /dev/null
+++ b/src/bakatools/time/time.h
@@ -0,0 +1,76 @@
+#pragma once
+
+#include <bakatoolspch.h>
+
+using Nanosecond = std::ratio<1,1000000000>;
+using Microsecond = std::ratio<1,1000000>;
+using Millisecond = std::ratio<1,1000>;
+using Second = std::ratio<1,1>;
+using Minute = std::ratio<60, 1>;
+using Hour = std::ratio<3600, 1>;
+using Day = std::ratio<84600, 1>;
+
+using SysClock = std::chrono::system_clock;
+using SteadyClock = std::chrono::steady_clock;
+
+template<typename P>
+struct TimeSpan 
+{
+    TimeSpan(int interval = 0) 
+    : interval(std::chrono::duration<long int, P>(interval)) {}
+    TimeSpan(std::chrono::duration<long int, P> interval)
+    : interval(interval) {}
+
+    template<typename T>
+    TimeSpan<T> get_as()
+    {
+        return TimeSpan<T>(std::chrono::duration_cast<std::chrono::duration<long int, T>>(interval));
+    }
+
+    int count() { return interval.count(); }
+
+    TimeSpan<P> operator-(TimeSpan<P>& time_span)
+    {
+        return TimeSpan<P>(interval - time_span.interval);
+    }
+
+    std::chrono::duration<long int, P> interval;
+};
+
+template<typename C, typename P>
+struct TimePoint
+{
+    TimePoint() = default;
+    TimePoint(std::chrono::time_point<C> point)
+    {
+        this->point = std::chrono::time_point_cast<std::chrono::duration<long int, P>>(point);
+    }
+
+    template<typename T>
+    TimePoint<C, T> get_as()
+    {
+        return TimePoint<C, T>(std::chrono::time_point_cast<std::chrono::duration<long int, T>>(point));
+    }
+
+    TimeSpan<P> elasped()
+    {
+        return TimeSpan<P>(point.time_since_epoch());
+    }
+
+    bool is_steady()
+    {
+        return C::is_steady;
+    }
+
+    TimeSpan<P> operator-(TimePoint<C, P>& tp)
+    {
+        return TimeSpan<P>(point - tp.point);
+    }
+
+    static TimePoint<C, P> now() 
+    {
+        return TimePoint<C, P>(C::now());
+    }
+
+    std::chrono::time_point<C, std::chrono::duration<long int, P>> point;
+};
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