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Welding & Joining Technology: Math for Welders

This Libguide will help students in the welding program learn about welding fundamentals and process



Video on Math for Welders

Area, Volume, and Surface area

Areas, Volumes, Surface Areas 

Math for Welders

Books in Library Catalog



online Calculators

Fraction to Decimal Calculator 


Object Volumes 


Trigonometry calculator 

Scientific Calculator 

Math on Metal 

Worksheet to help with math for welders


NSF Math Curriculum for Welding 

Contains worksheets and lessons on math for welders


Welding Math (and Science) 

For Welders, Welding Students, Welding Instructors and Others Involved in Managing Welding Operations.


Video playlist

CWI Study Information 

Math and study videos for welders from Welding and stuff

Math Websites

Extensive online resource on mathematics


make all systematic knowledge immediately computable and accessible to everyone. Find math solutions and examples with lessons

Webmath is a math-help web site that generates answers to specific math questions and problems, as entered by a user, at any particular moment.


AAA Math features a comprehensive set of thousands of interactive arithmetic lessons.



Math for Welders


Math for Welders

Math for Welders

Welders need to be familiar with the following math topics:


Fractions & Decimals: Almost every blueprint will have calculations based on fractions that will need to be converted to decimals to get accurate weld points.


Geometry: welding projects require you to understand, calculate and measure welds at different angles. Welders will need to be able to calculate length and size of various shapes and calculate the radius, diameter, and circumference of rounded shapes. 


Trigonometry: Welders need an understanding of tangents, signs and cosigns in order to test the strength of the joint without breaking it.


Arithmetic: Calculate shapes, sizes, and volume of sheets for welding, Determine pressure, angle, volume of gases to use, and changes in temperature and its effects on metals, calculate shapes and structures for rebuild.

conversion chart




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Addition resources

Convert Fractions to Decimals 
Geometry Cheat Sheet 
Sine, Cosine and Tangent 
Trig Cheat Sheet 
Welding Calculations 
Measures (English, Metric, and Equivalents) 
Math on Metal 
Fractions intro 
Intro to decimals 
Unit: Trigonometry with general triangles 

Wiregrass Libguides with math

Mathematical Reasoning Tabb 

Will help with basic mathematics and algebra



Math Libguide on different topics in mathematics