Natural antioxidants are preferred over the synthetic antioxidants as the latter cause side effects to human. Seeking for alternative natural antioxidants to sustain the sources of antioxidants is indispensable. This study aimed to (i) compare the antioxidant content of Mondo grass leave via Total Phenolic Content (TPC) and Total Flavonoid Content (TFC) assays, (ii) compare antioxidant activity of Mondo grass leave using Ferric Reducing Antioxidant Potential (FRAP) and ABTS radical scavenging activity, and (iii) examine whether antioxidant content is correlated with its activity. Methanol, ethyl acetate and petroleum ether were used as extraction solvents. Results revealed that ethyl acetate is effective in extracting the plant’s antioxidant compounds since it displayed the highest TPC and TFC values. It also had the highest scavenging activity in ABTS assay. For FRAP assay, extract of petroleum ether showed the best performance. There were statistically significant correlation between the antioxidant activity and TFC assays. The correlation between TFC and FRAP assays was statistically insignificantly different.