diff --git a/web/transfer-time b/web/transfer-time
index a6e4d18..6bc46a9 100755
--- a/web/transfer-time
+++ b/web/transfer-time
@@ -62,7 +62,10 @@ def parse_speed(speed_string):
 
 
 def parse_options():
-    parser = argparse.ArgumentParser(description='Transfer time calculator')
+    parser = argparse.ArgumentParser(
+        description = 'Transfer time calculator',
+        epilog = "You may omit the 'b' to time events. ex. '20 minutes / task, 7 tasks to do': %(prog)s 3/h 7"
+    )
     parser.add_argument('speed', help = "Speed of transfer (ex. 3.2Mb/s). Time units: s, m, h, d, w")
     parser.add_argument('size', help = "Data size (ex. 4.55GB), or folder/file path. Units: b, kb, mb, gb, tb, pb or kib, mib ... ")
     return parser.parse_args()
@@ -85,7 +88,7 @@ def parse_size(size_string):
     numerical_part = float(numerical_part)
     multiplier_part = size_string[last_digit:]
 
-    if multiplier_part == "b":
+    if multiplier_part in  ("b", ""):
         return numerical_part
 
     if multiplier_part == "kb":