Brass Calculator (Brass to CFT, m³ and kg)

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Convert brass to cubic feet, cubic metres, kilograms and tonnes for sand, aggregate, crushed stone and soil — plus truck loads and the cost of your order.

Inputs

Quantity

Entered in

Material

Cost and delivery

Rate per brass (₹)

Leave 0 to skip costing

Truck capacity (cft)

Tipper ≈ 300 cft, tractor trolley ≈ 100 cft

How to use this calculator: Brass Calculator (Brass to CFT, m³ and kg)

Convert brass to cubic feet, cubic metres, kilograms and tonnes for sand, aggregate, crushed stone and soil — plus truck loads and the cost of your order. The example below is calculated by this page's real engine from the displayed inputs.

1Confirm that the Brass Calculator (Brass to CFT, m³ and kg) matches the quantity or design check you need.
2Enter Quantity, Rate per brass, and Truck capacity using the units printed beside each field.
3Select the applicable Entered in and Material options; these choices change the calculation method or factors.
4Calculate, then follow the substituted equations in the worked example and compare the result with any stated limit.
5Read the assumptions, warnings and cited references before using the result for a financial, medical or engineering decision.

Input guide and example values

Use values from the same measurement basis and time period. Conditional fields appear only when the related option is selected.

Input	Example value	Why it matters
Quantity	1	Measured or known quantity used by the calculation engine.
Entered in	Brass	Select the option that matches the real installation or scenario.
Material	River sand	Select the option that matches the real installation or scenario.
Rate per brass	0 ₹	Leave 0 to skip costing
Truck capacity	300 cft	Tipper ≈ 300 cft, tractor trolley ≈ 100 cft

Formula inputs & variables for Brass Calculator (Brass to CFT, m³ and kg)

These are the named quantities used by this calculator. When the source formula does not define a mathematical symbol, OneCalcApp keeps the real input label instead of inventing one.

Variable / input	Unit	Meaning in this calculation
Quantity	—	Measured or known quantity used by the calculation engine.
Entered in	—	Select the option that matches the real installation or scenario.
Material	—	Select the option that matches the real installation or scenario.
Bulk density	kg/m³	Loose (as delivered) density, not compacted
Rate per brass	₹	Leave 0 to skip costing
Truck capacity	cft	Tipper ≈ 300 cft, tractor trolley ≈ 100 cft

Formula, derivation and worked example

Brass is the volume unit used across Indian construction sites for sand, aggregate, murum and rubble. One brass is a 10 ft × 10 ft × 1 ft stack, that is 100 cubic feet or 2.8317 cubic metres. It is a volume, never a weight — so one brass of river sand is about 4.53 tonnes while one brass of 20 mm aggregate is about 4.39 tonnes, purely because their bulk densities differ. Suppliers quote a rate per brass, tippers are usually counted as 3 brass and a tractor trolley as roughly 1 brass, so converting your design quantity in cubic metres into brass is what lets you check a quotation and a delivery challan on site.

1 brass = 100 cubic feet = 2.8317 m³

Volume in brass = cubic feet ÷ 100 = m³ ÷ 2.8317

Weight = volume in m³ × bulk density

Loads = total cubic feet ÷ truck capacity in cft

Substitution steps

1. Volume
quantity × 2.8317 m³
= 2.832 m³
2. Cubic feet
m³ × 35.3147
= 100 cft
3. Brass
cft ÷ 100
= 1 brass
4. Weight
m³ × 1,600 kg/m³
= 4,531 kg

Computed example results

Volume in brass: 1 brass; 1 brass = 100 cft = 2.8317 m³
Cubic feet: 100 cft
Cubic metres: 2.832 m³
Weight: 4.53 tonne; 4,531 kg at 1,600 kg/m³
Tractor trolleys (100 cft): 1
Truck loads: 0.33; at 300 cft per load
Cubic yards: 3.7 cu yd
Cost of material: —; enter a rate per brass
Effective rate: —

Understanding the result

Read the main result together with supporting checks, assumptions, limits and intermediate values.

For a manual check, repeat the first equation, confirm the units and change one input at a time.

Assumptions and calculation scope

Bulk density is assumed to be entered in kg/m³; converting from another unit before entry avoids changing the numerical meaning of the calculation.
Entered in is assumed to match the real case. Choosing a different available option can change the method, factor or interpretation used by this calculator.
Brass Calculator (Brass to CFT, m³ and kg) applies the displayed 1 brass = 100 cubic feet = 2.8317 m³ relationship to the entered construction inputs. Factors that are not exposed as inputs or stated assumptions are outside this calculator's calculation scope.

Common mistakes when using Brass Calculator (Brass to CFT, m³ and kg)

Do not mix units for Rate per brass (₹), Truck capacity (cft). A unit mismatch changes the input magnitude even when the typed number looks reasonable.
Do not leave Entered in on the default choice unless that choice matches the real scenario; the selected option can change the calculation path or factor.
Do not replace the displayed 1 brass = 100 cubic feet = 2.8317 m³ relationship with a different convention without also changing the underlying assumptions; compare like-for-like methods when checking the result.
Do not treat Volume in brass = 1 brass from the worked example as a universal answer. It belongs to the displayed example inputs and must be recalculated for the actual case.

When the Brass Calculator (Brass to CFT, m³ and kg) is useful

Brass Calculator (Brass to CFT, m³ and kg) is designed for cases where Quantity, Entered in, Material, Rate per brass are known and you need Volume in brass, Cubic feet, Cubic metres. The page keeps the live calculator, calculation method and worked example together so the result can be checked instead of treated as a black-box number.

Use the calculator for the scope described by its inputs and notes. The displayed method is 1 brass = 100 cubic feet = 2.8317 m³. If the real project or decision needs factors that are not represented here, treat the result as an estimate and add the missing checks separately.

Quantity and Entered in: what changes the answer

The worked example uses Quantity = 1, Entered in = Brass, Material = River sand, Rate per brass = 0 ₹. With those values, Volume in brass is 1 brass. Changing an input should be interpreted according to that field's unit, range, option and hint rather than by the number alone.

For this calculator, the main input roles are: Quantity: Measured or known quantity used by the calculation engine. Entered in: Select the option that matches the real installation or scenario. Available choices include Brass, Cubic feet (cft), Cubic metre (m³), Tractor trolley (100 cft). Material: Select the option that matches the real installation or scenario. Available choices include River sand, M-sand (manufactured sand), Aggregate 10 mm (chips), Aggregate 20 mm (metal / jelly). Rate per brass (₹): Leave 0 to skip costing

How to sanity-check a Brass Calculator (Brass to CFT, m³ and kg) result

Start by confirming the entered values and units, then compare the substituted working with the displayed formula or calculation steps. Pay particular attention to Volume in brass, because it is the first worked-example output shown by the live engine.

Finally, compare the result with the assumptions, warnings and related calculators on this page. A nearby calculator can be useful as a cross-check when it measures the same workflow from a different input or output direction.

Next logical calculator

Continue with Sand Quantity Calculator

Sand Quantity Calculator is directly connected from Brass Calculator (Brass to CFT, m³ and kg) as a source-defined continuation or comparison.

Open Sand Quantity Calculator

Formula

1 brass = 100 cubic feet = 2.8317 m³
Volume in brass = cubic feet ÷ 100 = m³ ÷ 2.8317
Weight = volume in m³ × bulk density
Loads = total cubic feet ÷ truck capacity in cft

Engineering notes

1 brass = 100 cft = 2.8317 m³ = 3.5315 cubic yards. 1 m³ = 0.3531 brass = 35.315 cft.
Brass measures loose, as-delivered material. Sand bulks up 20–30% when damp, so a wet load measured in the trolley contains less dry sand than it appears to.
Some regions also use 'brass' for area work (100 sq ft of plaster or flooring). Confirm with your supplier which one the rate refers to.

Brass conversion chart for common materials

Volume is fixed: 1 brass = 100 cft = 2.8317 m³. Weight depends on the loose bulk density shown, so treat tonnages as ±5%.

Material	Density (kg/m³)	1 brass (kg)	1 brass (tonne)	1 m³ (kg)	Brass per tonne
River sand	1600	4,531	4.53	1600	0.221
M-sand (manufactured sand)	1750	4,955	4.96	1750	0.202
Aggregate 10 mm (chips)	1600	4,531	4.53	1600	0.221
Aggregate 20 mm (metal / jelly)	1550	4,389	4.39	1550	0.228
Aggregate 40 mm	1500	4,248	4.25	1500	0.235
Crushed stone / GSB	1750	4,955	4.96	1750	0.202
Murum / moorum	1650	4,672	4.67	1650	0.214
Excavated soil (loose)	1400	3,964	3.96	1400	0.252
Rubble stone	1600	4,531	4.53	1600	0.221

What is 1 brass?

One brass is 100 cubic feet of loose material — a heap 10 ft long, 10 ft wide and 1 ft high. In metric terms that is 2.8317 m³, and it is the standard trading unit for sand, aggregate, murum and rubble in Maharashtra, Gujarat, Karnataka and much of western India.

Brass to weight

Multiply 2.8317 m³ by the bulk density: river sand at 1,600 kg/m³ gives 4,531 kg (4.53 t) per brass, 20 mm aggregate at 1,550 kg/m³ gives 4,389 kg (4.39 t) per brass and murum at 1,650 kg/m³ gives 4,672 kg per brass.

Brass vs truck loads

A tractor trolley carries about 100 cft, so roughly 1 brass. A 6-wheel tipper carries 300 cft (3 brass) and a 10-wheel hyva 400–600 cft (4–6 brass). Always measure the body dimensions once: L × B × H in feet ÷ 100 = brass.

Worked example

1You need 12 m³ of river sand for a slab.
2Brass = 12 ÷ 2.8317 = 4.24 brass, i.e. 12 × 35.315 = 423.8 cft.
3Weight = 12 × 1,600 = 19,200 kg = 19.2 tonnes.
4At ₹4,500 per brass the order costs 4.24 × 4,500 = ₹19,073, delivered in about 1.4 tipper loads of 300 cft.

Tips

Measure the trolley or tipper body on arrival: length × breadth × height in feet ÷ 100 gives brass directly.
Order 5% extra sand and aggregate to cover spillage and the material left in the pit.
Ask whether the quoted rate is per brass of 100 cft or per tonne — mixing the two is the most common billing dispute.

Frequently asked questions

What is 1 brass in cft?

1 brass = 100 cubic feet exactly. It is a 10 ft × 10 ft × 1 ft volume of loose material.

How many m³ is 1 brass?

1 brass = 2.8317 m³. Going the other way, 1 m³ = 0.3531 brass and 1 cubic metre of sand is roughly a third of a brass.

What is 1 brass in kg?

It depends on the material because brass is a volume. River sand at 1,600 kg/m³ gives about 4,531 kg per brass, 20 mm aggregate about 4,389 kg and murum about 4,672 kg.

How many brass in 1 tonne of sand?

About 0.22 brass — one tonne of river sand occupies roughly 0.63 m³, and 1 brass holds 4.53 tonnes.

How many brass is one tractor of sand?

A standard tractor trolley holds about 100 cft, so about 1 brass. A 6-wheel tipper holds 300 cft, i.e. 3 brass.

Is brass a unit of area or volume?

Normally volume: 100 cubic feet. Some contractors also say 'brass' for 100 square feet of plaster, tiling or flooring work, so confirm which one a rate refers to before signing.

How do I convert brass to cubic yards?

1 brass = 3.5315 cubic yards, because a cubic yard is 27 cubic feet.

What inputs does the Brass Calculator (Brass to CFT, m³ and kg) use?

It uses Quantity, Entered in, Material, Rate per brass, and Truck capacity. Follow the unit printed for each field and choose any selectable option to match the real scenario.

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