diff --git a/Tools/scripts/convert_param_scale.py b/Tools/scripts/convert_param_scale.py
new file mode 100755
index 0000000000..ad0f9a04cd
--- /dev/null
+++ b/Tools/scripts/convert_param_scale.py
@@ -0,0 +1,55 @@
+#!/usr/bin/env python3
+'''
+tool to convert parameter names and scales, useful for conversion for cm -> m and cdeg -> deg
+
+this looks for files called *.param or *.parm
+
+example:
+  Tools/scripts/convert_param_scale.py --scale 0.1 TRIM_ARSPD_CM AIRSPEED_CRUISE
+'''
+
+import os
+import sys
+
+from argparse import ArgumentParser
+
+parser = ArgumentParser(description="parameter conversion tool")
+
+parser.add_argument("--scale", default=1.0, type=float, help="scale factor")
+parser.add_argument("--directory", default=".", help="directory to search")
+parser.add_argument("old_name", default=None, help="old parameter name")
+parser.add_argument("new_name", default=None, help="new parameter name")
+
+args = parser.parse_args()
+
+def process_file(fname):
+    needs_write = False
+    with open(fname, "r") as f:
+        lines = f.readlines()
+    for i in range(len(lines)):
+        line = lines[i]
+        if line.startswith(args.old_name):
+            a = line.split()
+            if len(a) == 2:
+                sep = ' '
+            else:
+                a = line.split(',')
+                if len(a) == 2:
+                    sep = ','
+                else:
+                    continue
+            v = float(a[1])
+            v *= args.scale
+            lines[i] = "%s%s%.2f\n" % (args.new_name, sep, v)
+            needs_write = True
+    if not needs_write:
+        return
+    print("Updating %s" % fname)
+    with open(fname, "w") as f:
+        for line in lines:
+            f.write(line)
+
+for root, dirs, files in os.walk(args.directory):
+    for file in files:
+        if file.endswith(".parm") or file.endswith(".param"):
+            process_file(os.path.join(root, file))