It’s a big, big, sweep of the arm, but most of your lifts can be (could be) compared to your back squat. If you back squat 100kg, the chances are you can snatch up to 60kg, and clean 75kg. Bear in mind these figures could vary by as much as 15%
|Power Snatch||Power Clean|
|Deadlift||Snatch Pull||Clean Pull|
Christian Thibaudeau adds extra ratios and insights here
Waxman’s gym has a fascinating “Weightlifting Lift Calculator” here
Box Rox also has a nice assessment tool here
My take home message is this: once you start struggling with your olympic lifts, and your technique is quite good, start to consider improving your strength.