You can calculate working capital by subtracting your liabilities from your assets:
Current Assets – Current Liabilities = Working Capital
This will give you your dollar amount of working capital. You can also calculate your working capital ratio by dividing your assets by your liabilities:
Current Assets / Current Liabilities = Working Capital Ratio
An ideal working capital ratio is between 1.2 and 2.0—if you need access to additional funds, then you might try to find a working capital loan.