Fillet Weld Strength Calculator
Design capacity of a fillet from leg size, length and electrode strength.
Handy anchor: a 6 mm E70 fillet carries ~0.96 kN per mm of length (design). US shops carry '~0.93 kips per 1/16 per inch' ā the same physics in customary units.
Formula
Fillet Weld Strength Calculator is a free fillet weld strength for welding engineers, fabricators and CWI inspectors ā instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Fillet Weld Strength Calculator
Design capacity of a fillet from leg size, length and electrode strength. The calculation implements P = 0.707Ā·sĀ·LĀ·f_u/(ā3Ā·Ī³_mw) (IS 800 cl. 10.5; AWS D1.1). Handy anchor: a 6 mm E70 fillet carries ~0.96 kN per mm of length (design). US shops carry '~0.93 kips per 1/16 per inch' ā the same physics in customary units.
How to use Fillet Weld Strength Calculator
- 1Enter Fillet leg size in mm.
- 2Enter Effective weld length in mm.
- 3Enter Electrode tensile f_u in MPa (E70xx ā 490 Ā· E60xx ā 430).
- 4Read Design capacity (IS 800), Per mm of weld instantly ā no submit button needed.
- 5Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Fillet Weld Strength Calculator?
- āImplements the standard formula ā P = 0.707Ā·sĀ·LĀ·f_u/(ā3Ā·Ī³_mw)
- āReference cited on-page: IS 800 cl. 10.5; AWS D1.1
- āOne-click SI ā Imperial toggle ā values convert in place, physics stays in SI
- āLive worked example: the substitution recomputes from your numbers
- āRuns entirely in your browser ā nothing uploaded, free forever
Frequently asked questions
What formula does the Fillet Weld Strength Calculator use?+
It computes P = 0.707Ā·sĀ·LĀ·f_u/(ā3Ā·Ī³_mw), per IS 800 cl. 10.5; AWS D1.1. The formula is displayed under the result along with a worked example substituted with your own inputs.
What should I keep in mind when using this calculator?+
Handy anchor: a 6 mm E70 fillet carries ~0.96 kN per mm of length (design). US shops carry '~0.93 kips per 1/16 per inch' ā the same physics in customary units.
Does this follow AWS/IS welding codes?+
Each tool implements the formula from the cited code or handbook (AWS D1.1, IS 800, ISO/EN). Qualified WPS values always govern over any calculator for code work.
Is the Fillet Weld Strength Calculator free to use?+
Yes ā completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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