算BuildCalc

Material weights calculators

14 material weight calculators: steel pipe, stainless pipe, plate, round and flat bar, equal angle, sections, aluminium, glass, stone, timber volume, aggregate tonnage and haulage.

14 tools, most used first

▩Stone Weight CalculatorMass per square metre and total for stone slabs by density.◎Steel Pipe Weight CalculatorMass per metre, per length and in total from OD and wall thickness.▬Steel Plate Weight CalculatorMass per square metre, per plate and in total from size and thickness.▮Round, Square and Flat Bar Weight CalculatorMass per metre and total for round, square and flat bar.∟Equal Angle Weight CalculatorMass per metre and total for equal angle steel.◍Stainless Steel Tube Weight CalculatorMass per metre and total for stainless tube.▤Aluminium Plate Weight CalculatorMass per square metre, per plate and in total for aluminium.▢Glass Weight CalculatorMass per square metre, per pane and in total for glass.▥Timber Volume and Weight CalculatorVolume, board area and weight for timber by species density.▦Sand and Gravel Tonnage ConverterCubic metres to tonnes by bulk density, with truck loads.▨Soil Haulage CalculatorNatural to loose volume, tonnes and truck loads without overloading.▣Cement Bag CalculatorTotal cement, exact bags and whole bags to order.⌷Section Steel Weight CalculatorPick a section type, enter height, flange width and thickness to get weight per metre, per piece and total tonnage.⌇Weld Consumable CalculatorWeld area, deposited metal and the electrode you actually need to buy.

What this group solves

Weight underpins everything quoted or hauled by the tonne — structural steel, rebar, sand and gravel, glass and stone. Get it wrong and the transport and lifting plan are wrong with it: a truck rated at 30 t loaded to 34 t is an overweight vehicle on the first weighbridge.

Everything here uses theoretical weight: steel at 7850 kg/m³, stainless at 7930, aluminium 2700, glass 2500, granite 2800, marble 2700 and timber 400-800 by species. Actual weighed material differs by 1-5%, heavier when the mill rolls to positive tolerance, so purchasing and freight need a margin while settlement uses theoretical weight.

FAQ

How is steel pipe weight calculated?
Weight in kg/m = (outside diameter − wall thickness) × wall thickness × 0.02466, with both dimensions in millimetres. A 108 × 4 pipe works out at (108 − 4) × 4 × 0.02466 = 10.26 kg/m. That factor is for carbon steel; use 0.02491 for stainless.
How much does a square metre of steel plate weigh?
Thickness in millimetres × 7.85 kg. A 10 mm plate is 78.5 kg/m². Chequered plate adds about 2.5 kg/m². Plate is rolled to a negative tolerance but settlement uses nominal thickness times theoretical density.
How many tonnes in a cubic metre of aggregate?
It depends on bulk density and moisture: about 1.45-1.65 t/m³ for medium sand, 1.45-1.55 for crushed stone and 1.6-1.8 for graded base. Each 1% of moisture adds roughly 1% to the weight. Haulage is weighed, settlement is by compacted or loose volume — keep the two bases consistent.

Related data tables

Material density tableCheck this before converting volume to weight — bulk and solid density differ by a factor of two, and picking the wrong one ruins the tonnage.Pipe size chart (DN to inch)DN15 to DN300: the inch equivalent, outside diameter, common wall, weight per metre and external area for insulation take-off.

Other groups

ConcreteRebarMasonryFinishesEarthworkTemporary WorksConstructionCostingM&EArea and volumeUnit conversionCode Lookup
Results are estimating aids only and are not a design basis. Construction and final accounts must follow the drawings, the applicable standards and an approved method statement. Anything affecting structural safety, shoring or falsework must be checked by a suitably qualified engineer.