This e-juice recipe calculator is free. Make your own E Juice recipes and impress your friends and family. Based on the ability to mix your own PG, VG, Base Nicotine and flavors. Very powerful and easy to use. Use any flavoring!, Nicotine base! mixes you want. The calculator will not save your recipes. Great News! Let the trumpets blare, The Pro Version RDV EJuice Calculator has been released!