SAE to Metric Calculator And Metric to Standard

Rakesh Nama
SAE to Metric Calculator And Metric to Standard

SAE to Metric Calculator And Metric to Standard

SAE to Metric Calculator

Metric to SAE Calculator

Converting SAE to Metric: A Comprehensive Guide

Understanding the distinction between SAE (Standard) and metric measurements is essential, as they are widely used in sockets, wrenches, and fasteners. Before delving into the process of converting SAE to metric, let's grasp the underlying concepts.

SAE, an acronym for the Society of Automotive Engineers, relies on standard imperial and U.S. customary measurements, predominantly utilizing inch fractions. This system is prevalent in the United States. In contrast, metric sizes are globally recognized and involve the measurement of sockets and screws in millimeters.

To convert SAE measurements to metric, you have two options: utilize a conversion chart or follow a simple step-by-step manual conversion process.

Step One: Fraction to Decimal Conversion

Begin by converting the inch fraction into a decimal format. Treat the fraction as a division problem and solve it accordingly.

For example:

1/4″ = 1 ÷ 4 = 0.25″

Step Two: Conversion to Millimeters

Next, multiply the inch decimal by 25.4 to obtain the equivalent measurement in millimeters. This crucial step enables the accurate conversion from SAE to metric.

0.25″ × 25.4 = 6.35 mm

SAE to Metric Conversion Chart

Alternatively, you can refer to the SAE to metric conversion chart below. This comprehensive chart presents common socket, wrench, and screw sizes, providing their SAE, metric, and inch decimal equivalents.
Standard (SAE)Metric (mm)Inches (decimal)
1/32″0.7938 mm0.0313″
1 mm0.0394″
1/16″1.5875 mm0.0625″
5/64″1.98438 mm0.0781″
2 mm0.0787″
3/32″2.3813 mm0.0938″
7/64″2.7781 mm0.1094″
3 mm0.1181″
1/8″3.175 mm0.125″
5/32″3.9688 mm0.156″
4 mm0.157″
4.5 mm0.177″
3/16″4.7625 mm0.188″
5 mm0.197″
5.5 mm0.216″
7/32″5.5563 mm0.219″
6 mm0.236″
1/4″6.35 mm0.25″
6.5 mm0.256″
7 mm0.276″
9/32″7.1438 mm0.281″
5/16″7.9375 mm0.313″
8 mm0.315″
11/32″8.7313 mm0.344″
9 mm0.354″
3/8″9.525 mm0.375″
10 mm0.394″
13/32″10.3188 mm0.406″
11 mm0.433″
7/16″11.1125 mm0.438″
15/32″11.9063 mm0.469″
12 mm0.472″
1/2″12.7 mm0.5″
13 mm0.512″
17/32″13.4938 mm0.531″
14 mm0.551″
9/16″14.2875 mm0.563″
15 mm0.591″
19/32″15.0813 mm0.594″
5/8″15.875 mm0.625″
16 mm0.63″
21/32″16.6688 mm0.656″
17 mm0.669″
11/16″17.4625 mm0.688″
18 mm0.709″
23/32″18.2563 mm0.719″
19 mm0.748″
3/4″19.05 mm0.75″
25/32″19.8438 mm0.781″
20 mm0.787″
13/16″20.6375 mm0.813″
21 mm0.827″
27/32″21.4313 mm0.844″
22 mm0.866″
7/8″22.225 mm0.875″
23 mm0.906″
29/32″23.0188 mm0.906″
15/16″23.8125 mm0.938″
24 mm0.945″
1″25.4 mm1″

By utilizing either the manual conversion process or the conversion chart, you can seamlessly convert SAE measurements to metric, enabling greater flexibility and compatibility with a wide range of tools and fasteners worldwide.

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