Best Majors To Do If Youre Not Good At Math Math for Welders: Its Real Importance and Practical Tips

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Math for Welders: Its Real Importance and Practical Tips

I’m terrible at math. how about you

In fact, math is important in many skilled trades, especially welding. Learning a little math will save you from wasting gas, welding rods, and ruining projects, and it’s definitely necessary if you want to master welding. You’ll just need to understand some basic welding math to become a good welder, including fractions and decimals, understanding simple formulas, and knowing your way around the math of geometric shapes.

What and how much math does a welder need?

The reality is that welders need these math skills and knowledge:

Fractions and decimals

Whether you work in manufacturing or construction, several basic welding applications require a basic understanding of measuring, cutting and fitting metal and other materials accurately. Measurements have everything to do with computational fractions, which may also need to be converted to decimals in certain situations.

Reading and understanding schematics and blueprints requires a general knowledge of fractions and decimals to understand the breakdown of measurements and apply them to the item or structures you are building. A good welder can tell how many times ¾ goes into four and a half without having to rely on a calculator. A little practice with any good math book will help you know how to add, subtract, multiply and divide fractions. Since problems like writing 3/16 of an inch in decimals increase in frequency, you need to start learning with a calculator and then try to do more and more of them in your head. Doing so will save a lot of time.


Knowledge of geometry, including understanding, calculating and measuring angles, measuring and calculating volume and area of ​​various shapes, and calculating diameter (distance from one side of a circle to the other) , radius (distance from the center of the circle to one side) and circumference (distance around the outside of the circle) of circular or round objects are all essential skills for any welder.

Clearly forming joints is a very important part of welding, and joints form angles and angles are the best moment in geometry.

Knowing how to use the drawing tools is very useful when building together. These tools help ensure that joints are square and determine the diameter, radius, and circumference of a circle.


Although we are getting pretty high math when it comes to trigonometry, many welders agree that a rudimentary understanding of trigonometry, including sine, cosine, and tangent, is a very important tool when it comes to solving problems, especially by calculating the angles and length of each side in a specific shape you are trying to replicate.

Also, calculating area and volume, calculating degrees, and understanding formulas are important skills for welding, which is rooted in trigonometry.

Volume and area

Calculating volume and area are also components of geometry and trigonometry.

The main calculations related to welding include:

• Calculation of the weld volume, area of ​​the segment (weld reinforcement) that defines the rounded cap placed on the weld joint.

• Calculate the pounds of steel required to effectively reinforce a joint.

• Estimation of the materials needed for a project.

• Determine the volume of materials needed to fit in an area of ​​a given size.


There are some formulas applied to welding, so welders need to be comfortable with the formulas and know how to use them. There will be formulas related to shapes and formulas related to gases. Understanding formulas means not only knowing how to use them in calculations, but knowing what a formula means when you look at it. For example, one of the gas laws states that pressure times volume equals temperature times a constant. A master welder will look at this formula and tell you immediately what happens to the temperature if the pressure drops and the volume stays the same.

Tools and resources for welding mathematics training

The calculator is a great tool, but…

A calculator is undoubtedly an important tool for welders, but what if you’re out in the field doing some repairs or on the job site and don’t have a calculator ready?

Learning how to write long-form calculations and equations is crucial, which not only helps when you don’t have a calculator handy, but gives you a better illustration of a specific scenario or problem you’re trying to solve. As you can solve a particular problem, you could apply the same process in the future.


There are many excellent books and online resources that can help you improve welding math skills. Here are some authorized resources:

• Practical math problems for welders – Robert Chasan

This presents a practical and highly effective approach to mathematics with the latest procedures, technologies and practices in today’s welding industry. You’ll see clearly how welders rely on math skills to solve everyday and more difficult problems, from measuring materials for cutting and assembly to ordering materials efficiently and economically. Easy-to-read explanations, a range of real-world examples, and practice problems illuminate the most important math skills in welding today, from basic procedures to the math tools needed for today’s welding.

• Math to build – Johnny Hamilton

This easy-to-follow book explains the basic mathematics used in manufacturing, construction and design. Starting with fractions and decimals and moving on to turns and mitered arcs, these principles are made as understandable as possible thanks in large part to detailed illustrations and practical applications. The result is greater efficiency, productivity and confidence in tasks from initial design to final product.

• Mathematics for welders – Nino Marion

This is a combination text and workbook that provides many hands-on exercises designed for welding students to apply basic math skills. Major teaching content areas include whole numbers, common fractions, decimal fractions, percentage, and measurement.

• The AWS Fabrication Math I course

If you suffer from math phobia, you can access this course on American Welding Online. Provides a comprehensive introduction to basic math skills. This fascinating multimedia format offers explicit, step-by-step verbal and visual explanations that make each mathematical concept understandable. Topics cover place value, simplification, measurement, estimation, addition, subtraction, multiplication, and division of whole numbers, mixed numbers, fractions, and decimals. This self-paced online course allows you to start at the level you select. For example, you may want to jump straight to conversions, or review additions and subtractions before continuing.

Above is important information and advice Vietnam Manpower Service and Trading Company, one of the offshore placement agencies in Vietnam collected and shared for you. I hope they help you in your successful welding career.

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