Asphalt & Bitumen Calculator India — Tonnage, Volume and Cost in ₹
Free bitumen and asphalt calculator for India. BC, DBM, BM and premix tonnage, volume and ₹ cost in metric units, to MoRTH specifications.
Calculator
Enter the dimensions of the area you are surfacing and this calculator returns the area, the volume in cubic metres, the weight, the tonnage to order and an estimated cost in INR. It is set up for India: metric units by default, the mix designations used under MoRTH Specifications for Road and Bridge Works and IRC codes, and local pricing.
Quick answers
A 1,000 m² road at 40 mm of Bituminous Concrete needs about 94 MT, or 104 MT with a 10% allowance.
| Area | 40 mm | 50 mm | 60 mm | 80 mm | 100 mm |
|---|---|---|---|---|---|
| 25 m² | 2.4 t | 2.9 t | 3.5 t | 4.7 t | 5.9 t |
| 50 m² | 4.7 t | 5.9 t | 7.1 t | 9.4 t | 11.8 t |
| 100 m² | 9.4 t | 11.8 t | 14.1 t | 18.8 t | 23.6 t |
| 200 m² | 18.8 t | 23.6 t | 28.3 t | 37.7 t | 47.1 t |
| 500 m² | 47.1 t | 58.9 t | 70.7 t | 94.2 t | 117.8 t |
| 1,000 m² | 94.2 t | 117.8 t | 141.3 t | 188.4 t | 235.5 t |
| 5,000 m² | 471.0 t | 588.8 t | 706.5 t | 942.0 t | 1,177.5 t |
| 7,300 m² | 687.7 t | 859.6 t | 1,031.5 t | 1,375.3 t | 1,719.2 t |
The tonnage formula
Weight (kg) = Volume (m³) × Density (kg/m³)
Tonnes = Weight (kg) ÷ 1,000
Combined: Tonnes = Area (m²) × Thickness (m) × 2.35
Worked example — a 240 m² area at 50 mm compacted:
- Volume: 240 × 0.05 = 12 m³
- Weight: 12 × 2,355 = 28,260 kg
- Tonnage: 28.3 tonnes
- With a 10% allowance: 31.1 tonnes to order
Density by mix type
Indian mixes follow MoRTH designations: BC at about 2,355 kg/m³, DBM at 2,370 kg/m³ and the more open BM at 2,160 kg/m³.
| Designation | Description | Density (kg/m³) | Typical use | Standard |
|---|---|---|---|---|
| BC — Bituminous Concrete | Wearing course | 2,355 | 30–50 mm wearing course | MoRTH Clause 509 |
| SDBC — Semi-Dense Bituminous Concrete | Thin wearing course | 2,330 | 25–30 mm | MoRTH Clause 508 |
| DBM — Dense Bituminous Macadam | Binder / base course | 2,370 | 50–100 mm | MoRTH Clause 507 |
| BM — Bituminous Macadam | Open-graded base | 2,160 | 50–75 mm profile course | MoRTH Clause 504 |
| Premix carpet | Thin open-graded surfacing | 2,000 | 20 mm rural surfacing | MoRTH Clause 511 |
| Mix seal surfacing | Thin surfacing with seal | 2,050 | 20 mm | MoRTH Clause 512 |
| SMA | Stone Matrix Asphalt | 2,400 | High-traffic wearing course | IRC SP:79 |
| BC with modified binder | PMB wearing course | 2,365 | Heavy traffic corridors | IRC SP:53 |
| RAP / recycled mix | Reclaimed bituminous material | 2,000 | Base and shoulders | IRC 120 |
| WMM — Wet Mix Macadam | Granular base | 2,200 | 150–250 mm base | MoRTH Clause 406 |
| GSB — Granular Sub-Base | Unbound sub-base | 2,150 | 150–300 mm | MoRTH Clause 401 |
| VG-30 bitumen | Viscosity grade binder | 1,030 | Binder and tack coat only | IS 73 |
Coverage per tonne
| Compacted thickness | m² per tonne | tonnes per 100 m² | tonnes per 1,000 m² |
|---|---|---|---|
| 20 mm | 21.2 | 4.71 | 47.1 |
| 25 mm | 17.0 | 5.89 | 58.9 |
| 30 mm | 14.2 | 7.06 | 70.6 |
| 40 mm | 10.6 | 9.42 | 94.2 |
| 50 mm | 8.5 | 11.78 | 117.8 |
| 60 mm | 7.1 | 14.13 | 141.3 |
| 70 mm | 6.1 | 16.49 | 164.9 |
| 80 mm | 5.3 | 18.84 | 188.4 |
| 100 mm | 4.2 | 23.55 | 235.5 |
| 150 mm | 2.8 | 35.33 | 353.2 |
| 200 mm | 2.1 | 47.10 | 471.0 |
Recommended thickness
| Application | Surface course | Binder / base course | Unbound base |
|---|---|---|---|
| Village / rural road | 20 mm premix carpet | 75 mm WBM/BM | 150 mm GSB |
| Residential colony road | 25 mm SDBC | 50 mm DBM | 150 mm WMM + 150 mm GSB |
| Urban local road | 30–40 mm BC | 50–75 mm DBM | 250 mm WMM + 200 mm GSB |
| State highway | 40 mm BC | 75–100 mm DBM | 250 mm WMM + 200 mm GSB |
| National highway | 40–50 mm BC | 100–150 mm DBM | 250 mm WMM + 200–300 mm GSB |
| Expressway | 50 mm SMA or BC (PMB) | 150–190 mm DBM | 250 mm WMM + 300 mm GSB |
| Industrial yard | 40 mm BC | 100 mm DBM | 300 mm WMM |
| Parking area | 30 mm BC | 50 mm DBM | 200 mm WMM |
2026 prices
| Item | Low | Typical | High |
|---|---|---|---|
| Bituminous Concrete (BC) per MT | ₹6,200 | ₹6,800 | ₹7,900 |
| DBM per MT | ₹5,600 | ₹6,200 | ₹7,200 |
| BM per MT | ₹4,900 | ₹5,500 | ₹6,400 |
| Premix carpet per MT | ₹4,600 | ₹5,200 | ₹6,100 |
| SMA per MT | ₹7,600 | ₹8,500 | ₹9,800 |
| RAP / recycled per MT | ₹700 | ₹1,400 | ₹2,400 |
| WMM per MT | ₹950 | ₹1,250 | ₹1,650 |
| VG-30 bitumen per MT | ₹48,000 | ₹52,000 | ₹58,000 |
| Road surfacing per m² (BC 40 mm) | ₹320 | ₹420 | ₹560 |
| Full flexible pavement per m² | ₹1,100 | ₹1,650 | ₹2,400 |
Price by region
| Region | Material | Installed |
|---|---|---|
| Delhi NCR | ₹6,400 – ₹7,900 / MT | ₹380 – ₹560 / m² |
| Maharashtra | ₹6,300 – ₹7,700 / MT | ₹370 – ₹540 / m² |
| Gujarat | ₹6,100 – ₹7,400 / MT | ₹350 – ₹510 / m² |
| Karnataka | ₹6,200 – ₹7,600 / MT | ₹360 – ₹530 / m² |
| Tamil Nadu | ₹6,200 – ₹7,500 / MT | ₹360 – ₹520 / m² |
| Telangana & Andhra Pradesh | ₹6,100 – ₹7,400 / MT | ₹350 – ₹510 / m² |
| Uttar Pradesh | ₹6,000 – ₹7,300 / MT | ₹340 – ₹500 / m² |
| West Bengal | ₹6,200 – ₹7,600 / MT | ₹360 – ₹530 / m² |
| Rajasthan | ₹6,000 – ₹7,200 / MT | ₹340 – ₹495 / m² |
| Kerala | ₹6,400 – ₹7,800 / MT | ₹380 – ₹550 / m² |
| North East states | ₹7,200 – ₹9,000 / MT | ₹430 – ₹640 / m² |
| Himachal & Uttarakhand | ₹6,900 – ₹8,600 / MT | ₹410 – ₹610 / m² |
Waste and compaction allowance
Loose material behind the paver occupies about 20% more volume than the compacted surface. Add edge trimming, material left in the lorry and normal measurement tolerance, and a 10% allowance is standard.
- 5% — simple machine-laid rectangle, experienced crew
- 10% — standard driveway or car park
- 15% — curved edges, several sections, hand-laid work
- 15–20% — recycled planings and cold-laid material
- 20–25% — unbound granular base
Common mistakes
- Using the loose thickness instead of the compacted design thickness.
- Failing to convert millimetres to metres before multiplying.
- Applying one density to every mix type.
- Measuring the excavation rather than the finished surface.
- Calculating a multi-layer structure as a single combined thickness.
- Forgetting the unbound base, which is often the larger tonnage.
- Not checking the plant's minimum order and small-load surcharge.
- Rounding down. A short order means a cold joint and a second mobilisation.
Measuring the site
Split the site into rectangles, triangles, circles and trapezoids and enter each as a separate area. Measure every dimension at three points and use the largest — surfaced areas are rarely as regular as they look. For a circular turning area, measure the diameter at the widest point and let the calculator apply π × r².
On a slope the true surface area exceeds the plan area. At a 10% gradient the difference is only 0.5% and can be ignored. Above 20%, multiply the length by √(1 + gradient²).
Frequently asked questions
How much bitumen mix do I need?
Multiply the area in square metres by the compacted thickness in metres, then by 2.35. A 100 m² area at 50 mm needs about 11.8 tonnes, or 13.0 tonnes with a 10% allowance.
What is the density of bitumen mix?
Indian mixes follow MoRTH designations: BC at about 2,355 kg/m³, DBM at 2,370 kg/m³ and the more open BM at 2,160 kg/m³. The calculator uses 2,355 kg/m³ by default and lets you select any of the 12 mixes listed on this page.
How much does bitumen mix cost per tonne?
Around ₹6,200 to ₹7,900 in 2026, with ₹6,800 typical. Distance from the plant is the largest single factor.
How many square metres does a tonne cover?
About 8.5 m² at 50 mm compacted, 10.6 m² at 40 mm and 5.3 m² at 80 mm.
How many cubic metres is one tonne?
0.425 m³ at 2,355 kg/m³. The calculation is 1,000 ÷ density.
How thick should the surfacing be?
See the thickness table on this page. Domestic access typically takes a 25 mm SDBC over 150 mm WMM + 150 mm GSB; commercial and adopted work is considerably heavier and follows MoRTH Specifications for Road and Bridge Works and IRC codes.
What allowance should I add?
10% for standard work, 5% for a simple machine-laid rectangle, 15% for curved or hand-laid areas and 15–20% for recycled material.
Which standards apply?
Work in India follows MoRTH Specifications for Road and Bridge Works and IRC codes, administered by MoRTH, NHAI and the Indian Roads Congress.