Introduction: Weight for Length/Height and Mid Upper arm circumference are two independent tools which are used to assess the severity of malnutrition. A study was conducted to assess the accuracy of Mid upper arm circumference in comparison to Weight for Length/Height in malnourished children between the age group of6-59 months.Objective: To assess the accuracy of Mid Upper arm Circumference (MUAC) in relation to Weight for Length/Height Z-score (WFL/WFH Z-score) in malnourished children. Materials & Methods: A Cross sectional Study was conducted at a tertiary care hospital with 302 (6m-59m) having diagnosis of malnutrition based on Moderate Acute Malnutrition (MAM) and Severe Acute Malnutrition (SAM) using the anthropometric age independent variables WHO growth Charts ofMUAC and WFL/WFH Z-score. Results:Out of the 302 children visited, the total number of malnourished children diagnosed on the basis of MAM and SAM was 72. The accuracy of MUAC in comparison to the WFL/WFH Z-score was found to be 83%.Conclusion: The Accuracy of MUAC was 83% in comparison to WFL/WFH Z score.