diff --git a/pcb_calculator/tracks_width_versus_current_formula.h b/pcb_calculator/tracks_width_versus_current_formula.h
index aa337e6880..5253752dd9 100644
--- a/pcb_calculator/tracks_width_versus_current_formula.h
+++ b/pcb_calculator/tracks_width_versus_current_formula.h
@@ -7,12 +7,12 @@ _HKI( "If you specify the maximum current, then the trace widths will be calcula
 "\n"
 "The calculations are valid for currents up to 35 A (external) or 17.5 A (internal), temperature rises up to 100 °C, and widths of up to 400 mils (10 mm).\n"
 "\n"
-"The formula, from IPC 2221, is  \n"
-"<center>___I = K &sdot; &Delta;T<sup>0.44</sup> &sdot; (W &sdot; H)<sup>0.725</sup>___</center>  \n"
-"where:  \n"
-"___I___ is maximum current in A  \n"
-"___&Delta;T___ is temperature rise above ambient in &deg;C  \n"
-"___W___ is width in mils  \n"
-"___H___ is thickness (height) in mils  \n"
-"___K___ is 0.024 for internal traces or 0.048 for external traces  \n"
+"The formula, from IPC 2221, is\n"
+"<center>___I = K &middot; &Delta;T<sup>0.44</sup> &middot; (W &middot; H)<sup>0.725</sup>___</center>\n"
+"where:\n"
+"___I___ is maximum current in A\n"
+"___&Delta;T___ is temperature rise above ambient in &deg;C\n"
+"___W___ is width in mils\n"
+"___H___ is thickness (height) in mils\n"
+"___K___ is 0.024 for internal traces or 0.048 for external traces\n"
 "" );
diff --git a/pcb_calculator/tracks_width_versus_current_formula.md b/pcb_calculator/tracks_width_versus_current_formula.md
index 447a6748fe..0171162793 100644
--- a/pcb_calculator/tracks_width_versus_current_formula.md
+++ b/pcb_calculator/tracks_width_versus_current_formula.md
@@ -6,11 +6,11 @@ The controlling value is shown in bold.
 
 The calculations are valid for currents up to 35 A (external) or 17.5 A (internal), temperature rises up to 100 °C, and widths of up to 400 mils (10 mm).
 
-The formula, from IPC 2221, is  
-<center>___I = K &sdot; &Delta;T<sup>0.44</sup> &sdot; (W &sdot; H)<sup>0.725</sup>___</center>  
-where:  
-___I___ is maximum current in A  
-___&Delta;T___ is temperature rise above ambient in &deg;C  
-___W___ is width in mils  
-___H___ is thickness (height) in mils  
-___K___ is 0.024 for internal traces or 0.048 for external traces  
+The formula, from IPC 2221, is
+<center>___I = K &middot; &Delta;T<sup>0.44</sup> &middot; (W &middot; H)<sup>0.725</sup>___</center>
+where:
+___I___ is maximum current in A
+___&Delta;T___ is temperature rise above ambient in &deg;C
+___W___ is width in mils
+___H___ is thickness (height) in mils
+___K___ is 0.024 for internal traces or 0.048 for external traces