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A study was performed to determine a more appropriate method of estimation of loamy soils relative saturated hydraulic conductivity through Guelph permeameter. The hydraulic conductivity measured through inverse hole method was compared to those obtained using different analyses of Guelph permeameter. Experiments were carried out in research farm of Abourayhan Campus, university of Tehran. Results showed that there was a significant difference (P?0.05) between means of inverse hole and Guelph permeameter analyses and similar results will be obtained if the means of Guelph analyses are multiplied by a constant coefficient of 3. Also there was not a significant difference (P?0.05) observed between means of two ponding height analysis and Richards' regression analysis. These analyses were as equivalent methods for loamy soils. Results of this study indicate that Richards' regression analysis could be recommended as a method for measuring loamy soils saturated hydraulic conductivity and would be a more appropriate method in application. Also, applying a suitable value of sportive number (?*), the single and two ponding height analyses would yield the same results