diff --git a/modules/shared_options.py b/modules/shared_options.py
index 21643afe0..99a051aaf 100644
--- a/modules/shared_options.py
+++ b/modules/shared_options.py
@@ -101,6 +101,7 @@ options_templates.update(options_section(('upscaling', "Upscaling", "postprocess
     "DAT_tile": OptionInfo(192, "Tile size for DAT upscalers.", gr.Slider, {"minimum": 0, "maximum": 512, "step": 16}).info("0 = no tiling"),
     "DAT_tile_overlap": OptionInfo(8, "Tile overlap for DAT upscalers.", gr.Slider, {"minimum": 0, "maximum": 48, "step": 1}).info("Low values = visible seam"),
     "upscaler_for_img2img": OptionInfo(None, "Upscaler for img2img", gr.Dropdown, lambda: {"choices": [x.name for x in shared.sd_upscalers]}),
+    "scaleBy_from_upscaler": OptionInfo(False, "Automatically set the Scale by factor based on the name of the selected Upscaler.").info("Will not change the value when no matching pattern is found."),
 }))
 
 options_templates.update(options_section(('face-restoration', "Face restoration", "postprocessing"), {
diff --git a/modules/ui_postprocessing.py b/modules/ui_postprocessing.py
index 7261c2df8..af44f6195 100644
--- a/modules/ui_postprocessing.py
+++ b/modules/ui_postprocessing.py
@@ -4,6 +4,36 @@ import modules.infotext_utils as parameters_copypaste
 from modules.ui_components import ResizeHandleRow
 
 
+def hook_scale_update(inputs):
+    import re
+    pattern = r'(\d)[xX]|[xX](\d)'
+
+    resize = upscaler = None
+    for script in inputs:
+        if script.label == "Resize":
+            resize = script
+        elif script.label == "Upscaler 1":
+            upscaler = script
+        elif resize and upscaler:
+            break
+
+    def update_scale(upscaler: str, slider: float):
+        match = re.search(pattern, upscaler)
+
+        if match:
+            if match.group(1):
+                return gr.update(value=int(match.group(1)))
+
+            else:
+                return gr.update(value=int(match.group(2)))
+
+        else:
+            return gr.update(value=slider)
+
+    if resize and upscaler:
+        upscaler.input(update_scale, inputs=[upscaler, resize], outputs=[resize])
+
+
 def create_ui():
     dummy_component = gr.Label(visible=False)
     tab_index = gr.Number(value=0, visible=False)
@@ -23,6 +53,8 @@ def create_ui():
                     show_extras_results = gr.Checkbox(label='Show result images', value=True, elem_id="extras_show_extras_results")
 
             script_inputs = scripts.scripts_postproc.setup_ui()
+            if getattr(shared.opts, 'scaleBy_from_upscaler', False):
+                hook_scale_update(script_inputs)
 
         with gr.Column():
             toprow = ui_toprow.Toprow(is_compact=True, is_img2img=False, id_part="extras")