diff --git a/DelG_to_Kd_converter.py b/DelG_to_Kd_converter.py
index 92c4695..19a8b7a 100644
--- a/DelG_to_Kd_converter.py
+++ b/DelG_to_Kd_converter.py
@@ -1,14 +1,17 @@
 #!/usr/bin/python
 
-import math # This will import math module 
+import math # This will import math module
 
 delg = float(input("What is your DelG in kcal/mol?" ))
-Kd_value = math.exp((delg*1000)/(1.98*298.15)) # this will calculate the dissociation constant from the Gibbs free energy of binding
-Kd_value1 = (math.exp((delg*1000)/(1.98*298.15)))*1000000 # this will calculate the dissociation constant from the Gibbs free energy of binding
-Kd_value2 = (math.exp((delg*1000)/(1.98*298.15)))*1000000000 # this will calculate the dissociation constant from the Gibbs free energy of binding
-print("Kd =", Kd_value, "M") # this will print out the results in M
-print("Kd =", Kd_value1, "microM") # this will print out the results in microM
-print("Kd =", Kd_value2, "nM") # this will print out the results in nM
+R = 1.9872 #cal/K.mol
+T = 298.18 #in degrees Kelvin - Body temperature
+Kd_value = math.exp((-delg*1000)/(R*T)) # this will calculate the dissociation constant from the Gibbs free energy of binding
+Kd_value1 = (math.exp((-delg*1000)/(R*T)))*1000000 # this will calculate the dissociation constant from the Gibbs free energy of binding
+Kd_value2 = (math.exp((-delg*1000)/(R*T)))*1000000000 # this will calculate the dissociation constant from the Gibbs free energy of binding
+print("Kd =", "{:e}".format(Kd_value), "M") # this will print out the results in M
+print("Kd =", "{:e}".format(Kd_value1), "microM") # this will print out the results in microM
+print("Kd =", "{:e}".format(Kd_value2), "nM") # this will print out the results in nM
 
-# to run the script use this command: python DelG_to_Kd_converter.py
+# to run the script in terminal use this command: python DelG_to_Kd_converter.py
 # if you are using this script, please cite: Shityakov, S.; Broscheit, J.; Forster, C., alpha-Cyclodextrin dimer complexes of dopamine and levodopa derivatives to assess drug delivery to the central nervous system: ADME and molecular docking studies. Int J Nanomedicine 2012, 7, 3211-9.
+# edited by Sebastian Moes