Switch the aircraft to metric and just fly the cleared levels. Aside from that both Lido and Jepp have tables to "translate" from metric levels to the usual format, including tables to go from height (QFE) to altitude (QNH), but i have to say i prefer the Lido presentation of the altitude conversion.
[Edit]Forgot to add, of course EAG charts have those tables too, but EAG charts are so bad compared to the other two that i actively try to de-learn everything about them.