Our Kilts are a Standard 24inch Drop, (about 61cm).
We can do custom lengths however, for the vast majority of sizes/heights, this is an appropriate average length. For example, I am 6ft3, and I find this length is fine, during our recent photo-shoot we had models around 5.5ft and this length was still without issue (obviously this may vary as everybody is different and has different length bodies, even those who are the same height), you may also have your own preferences.
As a rule of thumb, if you’re over about 6ft3, or under 5ft4 then you might want to look at increasing or shortening length as appropriate.
If it is of concern, measuring up for drop length is super easy! Simply just measure from your Waist (or if you wear your kilt on your belly measure from here), then measure to the middle of your knee. Alternatively, you might find it easier to kneel on the floor, and measure from your Waist/Belly to the floor, this is your drop length. Let us know, and we can advise if there is any additional cost to have the appropriate length adjustment for you.