The calculation, without hidden assumptions
Estimate an ideal sharp-corner tee/T-section from explicit flange and stem dimensions. This owner is for section mass and procurement—not structural capacity. For a named rolled tee or a tee split from a beam, compare against the current governing section table or mill certificate because root radii, taper and production dimensions affect published mass.
How to use this calculator
Enter overall tee depth, flange width, web thickness and flange thickness.
Choose metric or imperial dimensions, then enter piece length and whole-piece quantity.
Use documented density for the actual material when it differs from the steel default.
Optionally enter purchasing allowance, rate/kg, target mass or a published kg/m value.
For a named rolled or split tee, use the current section table or supplier certificate as the procurement reference.
Where people use it
- •Estimate fabricated T-section or tee-bar mass.
- •Plan steel purchasing, transport and handling quantities.
- •Convert tee section unit mass between kg/m and lb/ft.
- •Reverse a shipment target into whole equal-length tee pieces.
- •Compare ideal geometry with supplier or standard kg/m.
100 × 80 mm tee, 6 mm web, 10 mm flange
Ideal area = 80×10 + (100−10)×6 = 1,340 mm². At 7,850 kg/m³ this is 10.519 kg/m. A 6 m piece is about 63.11 kg; 10 pieces are about 631.14 kg before allowance.
What the result does not assume
- •The ideal model uses sharp rectangles and excludes root radii and flange taper.
- •Rolled tees and tees produced by splitting I/H sections can have geometry not captured by four nominal dimensions.
- •Do not infer a standard tee designation from approximate dimensions.
- •Allowance is an entered purchasing assumption, not a structural factor.
- •This calculator estimates mass only; it does not determine bending, shear, buckling, connection capacity, lifting points or code compliance.
Frequently asked questions
How do you calculate tee section weight?+
For an ideal tee, add the flange rectangle to the clear stem rectangle, then multiply area by density. With area in mm², kg/m = area × 10⁻⁶ × density in kg/m³.
Why can a published T-bar weight differ from this result?+
Real rolled or split tees may include root radii, flange taper and manufacturing tolerances. Published section mass represents the standardized or manufactured geometry more closely.
Can I use this for a tee cut from an I-beam?+
Use it as a geometry estimate only. A split-beam tee retains radii and section details from its parent beam, so use the applicable published split-tee properties for critical work.
Does it support unequal flange and stem thickness?+
Yes. Flange thickness and web or stem thickness are entered independently.
Can it calculate lb/ft?+
Yes. Enter dimensions in inches and length in feet when convenient; output includes both kg/m and lb/ft plus total kilograms and pounds.
Can it reverse-solve quantity from a target mass?+
Yes. Enter a target mass and the calculator returns how many whole entered-length tee pieces fit within it.
Semantic next steps
Continue the calculation
These links move to a different input, formula or project stage rather than a keyword variation of this page.
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