diff --git a/src/libslic3r/GCode/GCodeProcessor.cpp b/src/libslic3r/GCode/GCodeProcessor.cpp
index 6fd42f7e5a..287610f8b2 100644
--- a/src/libslic3r/GCode/GCodeProcessor.cpp
+++ b/src/libslic3r/GCode/GCodeProcessor.cpp
@@ -311,7 +311,7 @@ void GCodeProcessor::TimeMachine::calculate_time(GCodeProcessorResult& result, P
         if (i == 0)
             block_time += additional_time;
 
-        time += block_time;
+        time += double(block_time);
         result.moves[block.move_id].time[static_cast<size_t>(mode)] = block_time;
         gcode_time.cache += block_time;
         if (block.layer_id == 1)
@@ -404,12 +404,12 @@ void GCodeProcessor::TimeMachine::calculate_time(GCodeProcessorResult& result, P
                 std::nullopt
             });
         }
-        g1_times_cache.push_back({ block.g1_line_id, block.remaining_internal_g1_lines, time });
+        g1_times_cache.push_back({ block.g1_line_id, block.remaining_internal_g1_lines, float(time) });
         // update times for remaining time to printer stop placeholders
         auto it_stop_time = std::lower_bound(stop_times.begin(), stop_times.end(), block.g1_line_id,
             [](const StopTime& t, unsigned int value) { return t.g1_line_id < value; });
         if (it_stop_time != stop_times.end() && it_stop_time->g1_line_id == block.g1_line_id)
-            it_stop_time->elapsed_time = time;
+            it_stop_time->elapsed_time = float(time);
     }
 
     if (keep_last_n_blocks) {
@@ -1397,12 +1397,12 @@ void GCodeProcessor::finalize(bool perform_post_process)
 
 float GCodeProcessor::get_time(PrintEstimatedStatistics::ETimeMode mode) const
 {
-    return (mode < PrintEstimatedStatistics::ETimeMode::Count) ? m_time_processor.machines[static_cast<size_t>(mode)].time : 0.0f;
+    return (mode < PrintEstimatedStatistics::ETimeMode::Count) ? float(m_time_processor.machines[static_cast<size_t>(mode)].time) : 0.0f;
 }
 
 std::string GCodeProcessor::get_time_dhm(PrintEstimatedStatistics::ETimeMode mode) const
 {
-    return (mode < PrintEstimatedStatistics::ETimeMode::Count) ? short_time(get_time_dhms(m_time_processor.machines[static_cast<size_t>(mode)].time)) : std::string("N/A");
+    return (mode < PrintEstimatedStatistics::ETimeMode::Count) ? short_time(get_time_dhms(float(m_time_processor.machines[static_cast<size_t>(mode)].time))) : std::string("N/A");
 }
 
 std::vector<std::pair<CustomGCode::Type, std::pair<float, float>>> GCodeProcessor::get_custom_gcode_times(PrintEstimatedStatistics::ETimeMode mode, bool include_remaining) const
diff --git a/src/libslic3r/GCode/GCodeProcessor.hpp b/src/libslic3r/GCode/GCodeProcessor.hpp
index 068e7b34c5..f416d2513a 100644
--- a/src/libslic3r/GCode/GCodeProcessor.hpp
+++ b/src/libslic3r/GCode/GCodeProcessor.hpp
@@ -340,7 +340,9 @@ namespace Slic3r {
             // hard limit for the travel acceleration, to which the firmware will clamp.
             float max_travel_acceleration; // mm/s^2
             float extrude_factor_override_percentage;
-            float time; // s
+            // We accumulate total print time in doubles to reduce the loss of precision
+            // while adding big floating numbers with small float numbers.
+            double time; // s
             struct StopTime
             {
                 unsigned int g1_line_id;