Below are standard mattress sizes:

SizeHeightWidthLengthApprox Weight
Single31cm92cm190cm35Kg
King Single31cm107cm203cm39Kg
Double31cm137cm190cm43Kg
Queen31cm152cm203cm49Kg
King31cm183cm203cm55Kg

Note that it is normal for mattresses to vary slightly in size +/-3% due to the flexible materials used.