Standard and Metric Wrench Size Chart

Do you simply need a reliable metric to standard wrench size chart to ensure the perfect fit for any bolt?

Look no further! Our comprehensive wrench size conversion chart will provide the answers you seek.

Note: If you don’t know the size of the bolt you are working on, you may want to try the socket size conversion chart first.

Alternatively, you can reference our bolt size chart to figure out the bolt size. Here is the chart.

Instructions: How To Use This Chart

To use this metric to standard wrench conversion chart, you will need to follow a few simple steps.

First, determine the metric size of the bolt or nut that you need to work with. This can be measured with a metric ruler or caliper.

Next, locate the corresponding metric size on the left-hand side of the chart. This will typically be listed in millimeters (mm).

Once you have located the metric size, follow the row across the chart to find the corresponding standard size on the right-hand side of the chart.

Finally, choose the appropriate standard wrench size based on the standard size listed on the chart. For the most common wrench/socket size, check out the 10mm socket to inches guide to learn more.

These different measurements refer to two different systems of measurement: SAE (Society of Automotive Engineers) and metric. SAE measurements are based on inches, while metric measurements are based on millimeters.

The chart is simply a guideline and the actual size of the wrench needed may vary depending on factors such as the manufacturer of the bolt or nut, the type of material being used, and how worn the bolt is.

As always, exercise caution and use the correct tool for the job to avoid damage or injury.