Several financial ratios help evaluate a company's performance. These include profitability ratios (such as gross profit margin, net profit margin), liquidity ratios (such as current ratio, quick ratio), solvency ratios (such as debt-to-equity ratio, interest coverage ratio), and efficiency ratios (such as inventory turnover, accounts receivable turnover). These ratios provide insights into different aspects of a company's financial performance and help identify strengths and weaknesses.