With this Epoxy Resin calculator you have the opportunity to calculate the required amounts of resin, resin / hardener after indication of length, width and height.
The density is given as 1.13 (epoxy resin), if you want to calculate with another density. There is the possibility to change in the field "resin density" and to calculate according to your resin.
It is also possible to change the mixing ratio by weight resin / hardener to obtain alternative compositions.