Bitumen Density kg/L Conversion
Last updated: 2026-10-01
Bitumen Density kg/L Conversion: Complete Guide
Bitumen density typically ranges from 1.01 to 1.06 kg/L at 25°C, with penetration grades (60/70, 80/100) averaging 1.03 kg/L and polymer-modified bitumen (PMB) reaching 1.05 kg/L. This means 1 metric ton of standard 60/70 bitumen occupies approximately 971 liters, while 1 cubic meter (1000 L) weighs roughly 1,030 kg. Because bitumen density changes with temperature at about 0.0006–0.0007 kg/L per °C, exporters and buyers must agree on a reference temperature (usually 25°C or 15°C) before converting between weight and volume.
For bulk cargo buyers, the density figure is not academic — it determines how much volume a vessel, ISO tank, or drum shipment will occupy, directly affecting freight cost, storage capacity, and invoice accuracy. In this guide, we break down bitumen density kg/L conversion across grades, temperatures, and unit systems, with tables you can use directly in quotes and shipping documents.
Bitumen Density by Grade: kg/L, kg/m³, and t/m³
Different penetration grades and modified binders have measurably different densities. Below is a reference table for the most traded grades at 25°C.
| Bitumen Grade | Density (kg/L) | Density (kg/m³) | Density (t/m³) | 1 MT occupies (L) |
|---|---|---|---|---|
| 40/50 Pen | 1.04 | 1,040 | 1.040 | 962 |
| 60/70 Pen | 1.03 | 1,030 | 1.030 | 971 |
| 80/100 Pen | 1.02 | 1,020 | 1.020 | 980 |
| 100/120 Pen | 1.01 | 1,010 | 1.010 | 990 |
| 160/220 Pen | 1.01 | 1,010 | 1.010 | 990 |
| Cutback (MC-30) | 0.95–1.00 | 950–1,000 | 0.95–1.00 | 1,000–1,053 |
| Emulsion (CSS-1) | 1.00–1.02 | 1,000–1,020 | 1.00–1.02 | 980–1,000 |
| PMB 60 (SBS) | 1.04–1.05 | 1,040–1,050 | 1.04–1.05 | 952–962 |
| Oxidized (115/15) | 1.05–1.07 | 1,050–1,070 | 1.05–1.07 | 935–952 |
| Bitumen 10/20 | 1.06 | 1,060 | 1.060 | 943 |
- Higher viscosity = higher density. Hard grades like 10/20 and 40/50 are denser than soft 160/220 grades.
- PMB and oxidized bitumen are the densest in industrial use, topping 1.05 kg/L.
- The average conversion factor used in trade is 1.03 kg/L for straight-run penetration bitumen.
- Cutbacks and emulsions are lighter because they contain solvents or water.
For a quick rule of thumb: 1 metric ton of 60/70 bitumen ≈ 0.971 m³ ≈ 971 liters. Multiply tons by 971 for liters, or divide liters by 971 for tons.
Temperature Effect on Bitumen Density Conversion
Density is temperature-dependent. Most international bitumen trade uses 25°C as the reference temperature, though ASTM D70 and some legacy contracts reference 15°C. The coefficient of thermal expansion for petroleum bitumen is approximately 0.0006–0.0007 kg/L per °C.
| Temperature | Density change (kg/L) | 60/70 density (kg/L) | 1 MT occupies (L) |
|---|---|---|---|
| 15°C | +0.007 | 1.037 | 964 |
| 20°C | +0.0035 | 1.034 | 967 |
| 25°C (ref) | 0.000 | 1.030 | 971 |
| 30°C | −0.0035 | 1.027 | 974 |
| 40°C | −0.0105 | 1.020 | 981 |
| 50°C | −0.0175 | 1.013 | 988 |
| 150°C (loading) | −0.0875 | 0.943 | 1,061 |
| 180°C (hot storage) | −0.1085 | 0.922 | 1,085 |
Key implication: At 150°C loading temperature, 60/70 bitumen expands to ~1,061 L per ton versus 971 L at 25°C — a 9.3% volume increase. If cargo is invoiced at hot tank volume without temperature correction, buyers can overpay by 8–10%. Always specify: "quantities corrected to 25°C per ASTM D4311."
Bitumen Density Conversion Formulas and Worked Examples
- Weight to volume: Volume (L) = Weight (MT) × 1000 ÷ Density (kg/L)
- Volume to weight: Weight (MT) = Volume (L) × Density (kg/L) ÷ 1000
- Temperature correction: Density at T = Density at 25°C − [(T − 25) × 0.00065]
- Density = 1.03 kg/L at 25°C
- Volume = 5,000 × 1000 ÷ 1.03 = 4,854,369 L = 4,854 m³
- In a vessel with 5,000 m³ cargo tank capacity, this cargo fits but leaves only ~3% ullage.
- Density = 1.045 kg/L at 25°C
- Volume = 20 × 1000 ÷ 1.045 = 19,139 L = 19.1 m³
- Standard bitumen tanker capacity (20 m³) is insufficient — order a 22 m³ tanker or reduce load to 19 MT.
If bitumen is quoted at $520/MT and density is 1.03 kg/L:
- Price per liter = 520 ÷ 1000 × 1.03 = $0.5356/L
- Price per m³ = $535.60
- A 30,000 L ISO tank load = 30,000 × 1.03 ÷ 1000 = 30.9 MT, cost $16,068
Get an instant landed-cost estimate using the 6Tar cost calculator.
| From | To | Multiply by |
|---|---|---|
| MT 60/70 | Liters | 971 |
| MT 60/70 | m³ | 0.971 |
| Liters 60/70 | MT | 0.00103 |
| m³ 60/70 | MT | 1.03 |
| MT PMB | Liters | 957 |
| MT Oxidized | Liters | 943 |
Drum, ISO Tank, and Bulk Vessel Capacity Conversions
Density determines how much bitumen fits in each packaging format. Since drums and tanks are rated in volume, higher density means more tonnage per unit.
| Packaging | Volume | Weight (MT) | Weight (kg) |
|---|---|---|---|
| New steel drum | 200 L | 0.206 | 206 |
| Reconditioned drum | 180 L | 0.185 | 185 |
| Jumbo bag (bitumen) | 1,000 L | 1.030 | 1,030 |
| ISO tank | 24,000 L | 24.72 | 24,720 |
| Flexitank (20 ft) | 24,000 L | 24.72 | 24,720 |
| Bitutank (road tanker) | 20,000 L | 20.60 | 20,600 |
| Handysize vessel | — | 5,000–15,000 MT | — |
| MR tanker | — | 30,000–50,000 MT | — |
- 1 × 20 ft container with flexitank carries ~24.7 MT of 60/70 — but road weight limits often cap payload at 24 MT, so load 23.3 MT (22,620 L) to stay legal.
- 1 × 40 ft container holds 2 flexitanks = ~49.4 MT, but again legal road limits apply.
- Bulk vessel cargo is always measured in m³ at 25°C and converted to MT using certified density; a 30,000 MT cargo of 60/70 occupies ~29,126 m³.
- Drums are the least efficient: a 20 ft container holds 80 drums = 16,480 L = 16.97 MT of 60/70 — roughly 31% less tonnage than a flexitank.
Incoterm implication: When buying FOB by volume (m³) but selling CIF by weight (MT), a 1% density discrepancy on a 30,000 MT cargo equals 300 MT ≈ $156,000 at $520/MT. Always state the density basis in the contract.
Why Bitumen Density kg/L Matters for Buyers and Exporters
Density errors compound quickly at scale. Here is the commercial impact across a typical export transaction.
| Scenario | Volume basis | Weight outcome | Cost difference |
|---|---|---|---|
| Density assumed 1.00 vs actual 1.03 | 30,000 m³ | 30,000 MT vs 30,900 MT | ±$468,000 |
| No temp correction at 150°C loading | 30,000 m³ hot | Overstated 9.3% volume | ±$1.45M risk |
| Drums vs flexitank, 20 ft | 80 drums vs flexitank | 16.97 MT vs 23.3 MT | 27% less payload |
| PMB quoted as 60/70 density | 24,000 L ISO tank | 24.72 MT vs 25.08 MT | ±$187/tank |
- Specify reference temperature (25°C per ASTM D4311 is standard).
- Specify test method (ASTM D70 or EN 15326 for density).
- State density tolerance (±0.01 kg/L is common).
- Agree on volume vs weight invoicing before loading.
- Use certified independent surveys (SGS, Intertek) for bulk cargoes.
- Apply ASTM/API temperature correction tables to all tank measurements.
Buyers sourcing 5,000+ MT annually should model landed cost per ton including freight, duty, and density-driven volume charges. Use the 6Tar cost calculator to compare suppliers on a true delivered-cost basis.
FAQ: Bitumen Density kg/L Conversion
What is the density of bitumen in kg/L?
Bitumen density ranges from 1.01 to 1.07 kg/L at 25°C, depending on grade. Standard 60/70 penetration bitumen is 1.03 kg/L, PMB is 1.04–1.05 kg/L, and oxidized grades reach 1.05–1.07 kg/L.
How many liters are in 1 ton of bitumen?
One metric ton of 60/70 bitumen equals approximately 971 liters at 25°C (1000 ÷ 1.03). For harder 10/20 grade at 1.06 kg/L, 1 ton equals 943 liters; for softer 160/220 at 1.01 kg/L, it equals 990 liters.
Does bitumen density change with temperature?
Yes. Bitumen expands when heated at roughly 0.0006–0.0007 kg/L per °C. At 150°C loading temperature, 60/70 density drops to ~0.943 kg/L, so 1 ton occupies 1,061 liters — about 9.3% more volume than at 25°C.
Is bitumen density higher than water?
Yes. Bitumen at 1.01–1.07 kg/L is slightly denser than water (1.00 kg/L at 4°C). This is why bitumen sinks in water and why spill containment and tank water-drainage procedures matter for storage safety.
How do I convert bitumen m³ to metric tons?
Multiply the volume in cubic meters by the density in t/m³. For 60/70 bitumen: 1 m³ × 1.03 = 1.03 MT. For a 30,000 m³ bulk cargo, that equals 30,900 MT — always confirm density at the contractual reference temperature first.
Calculate Your Bitumen Landed Cost in Seconds
Density errors of even 1% can swing a 30,000 MT cargo by $156,000. Before you sign a purchase order, verify the