Analysis of compaction parameters of the exemplary non-cohesive soil determined by Proctor methods and vibrating table tests.The purpose of the work is to analyze compaction parameters of non-cohesive uniformly graded soil -optimum moisture content (w opt ) and maximum dry density (ρ dmax ), obtained from Proctor tests and using vibrating table. The research was conducted on even-graded medium sand (Safgr), of uniformity coefficient C U = 3.10 and coefficient of curvature C C = 0.99. Compaction parameters were examined by using Proctor tests -standard Proctor tests (I and II) and modified Proctor tests (III and IV) in compliance with PN-B-04481:1988, and also standard (A+A and A+B) and modified (B+A and B+B) according to PN-EN 13286-2:2010, and by using a vibrating table in compliance with PN-EN 13286-5:2006 at four sample loading attempts. The moisture content of the samples increased by 1-2% in the range of about 0% to about 10%. On the basis of the analysis of data from soil studies with uniform grain size (poorly compactable soil), it can be concluded that the values of test results ρ dmax of medium sand with standard (or modified) Proctor tests according to PN-B-04481:1988 and PN-EN 13286-2:2010 are close to each other. It can be concluded that in the case of ρ dmax , the vibrating table method (with the assumed test conditions) allows to achieve results comparable to those of Proctor (mean relative difference 1.88%). Using the vibrating table the w opt values were lower than those obtained by Proctor tests (mean relative difference of 18.84%).