THE FEUTEX TOOLKIT

Fillet Weld Metal Volume

Estimate ideal deposited metal, mass and filler consumption.

Manufacturing workspace● Runs in your browser

01 Your input

Equal fillet leg lengthmmTotal weld lengthmmWeld metal densitykg/m³Deposition efficiency

02 Your result

View or copy raw result data

Result data

FormulaEqual-leg triangle area=a²/2; throat=a/√2.

Sources and model references

https://ocw.mit.edu/courses/2-008-design-and-manufacturing-ii-spring-2025/lists/lecture-notes/

Worked example

Inputs

Equal fillet leg length: 6 mm
Total weld length: 1000 mm
Weld metal density: 7850 kg/m³
Deposition efficiency: 0.9

Expected results

Theoretical throat: 4.242640687 mm
Ideal deposited mass: 0.1413 kg
Filler feed mass: 0.157 kg

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

Enter every input in the labeled units; use measured or independently specified properties.
Check the stated model assumptions before calculating.
Interpret the output as a model estimate and verify it independently for the intended application.

Try this example

{
  "leg": 6,
  "length": 1000,
  "rho": 7850,
  "efficiency": 0.9
}

Accuracy and scope

Flat-faced equal-leg fillet; excludes reinforcement, penetration, start/stop waste and strength checks. Educational engineering estimate only; not structural or safety certification, equipment selection, or operating recommendations.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.