To convert from metric to English and visa versa

http://www.sciencemadesimple.com/metric_conversion_chart.html

To convert between metric units and English units, follow these steps:

Step 1: Determine the conversion factor
Find the appropriate conversion factor for the units you are converting. Conversion factors are ratios that are used to convert between different units of measurement. For example, to convert from kilograms (metric) to pounds (English), the conversion factor is 2.20462.

Step 2: Multiply or divide
To convert from one unit to another, multiply or divide the original value by the conversion factor, depending on the direction of conversion.

For example, let's say you want to convert 10 kilograms to pounds:
10 kg * 2.20462 lb/kg = 22.0462 lb

Alternatively, if you want to convert 10 pounds to kilograms:
10 lb / 2.20462 lb/kg = 4.53592 kg

Step 3: Apply the conversion factor to other metric or English units
Once you have determined the conversion factor for a specific unit, you can apply it to other values in the same unit.

It's important to note that there are many different conversion factors for different units. The link you provided, http://www.sciencemadesimple.com/metric_conversion_chart.html, appears to be a useful resource for finding conversion factors and a conversion chart to help with metric to English and vice versa conversions.