How the Gasoline / Petrol Converter Works
The Gasoline / Petrol Converter divides gasoline mass by the density of the fuel grade. The default 0.745 kg/L fits regular unleaded at 15°C (59°F).
Pick the grade
Regular, premium, E10, E85 and aviation gasoline differ in density.
Enter the density
Use the table value or the delivery note density at 15°C.
Enter the mass
Type the gasoline weight in kilograms.
Read the liters
The result gives the fuel volume for tanks and cans.
Gasoline / Petrol Converter Formula
The gasoline formula is Liters = Kilograms ÷ 0.745. One kilogram of regular petrol fills about 1.342 L.
- ρgrade
- Density of the gasoline grade, kg/L
- 0.789
- Density of ethanol, kg/L
Worked Examples
- Regular: 40 kg ÷ 0.745 = 53.69 L.
- E10 blend: ρ = 0.9 × 0.740 + 0.1 × 0.789 = 0.7449 kg/L.
- Avgas 100LL: 100 L × 0.72 = 72.0 kg (6.0 lb per US gal).
Gasoline / Petrol Converter Conversion Table
1 kg of regular gasoline equals 1.342 liters. The table lists 7 gasoline grades at 15°C.
| Gasoline Grade | Density (kg/L) | Liters per 1 kg | lb per US gal | Liters per tonne |
|---|---|---|---|---|
| Aviation gasoline 100LL | 0.720 | 1.389 | 6.01 | 1,389 |
| Regular unleaded (91–92 RON) | 0.740 | 1.351 | 6.18 | 1,351 |
| Regular unleaded (EN 228 typical) | 0.745 | 1.342 | 6.22 | 1,342 |
| Premium (95–98 RON) | 0.750 | 1.333 | 6.26 | 1,333 |
| E10 (10% ethanol) | 0.745 | 1.342 | 6.22 | 1,342 |
| E85 (flex fuel) | 0.781 | 1.280 | 6.52 | 1,280 |
| Race fuel (high aromatic) | 0.770 | 1.299 | 6.43 | 1,299 |
What is a Gasoline / Petrol Converter?
A Gasoline / Petrol Converter is a calculator that converts gasoline weight into volume using the density of the fuel grade.
Gasoline is a blend of light hydrocarbons, C4 to C12, from refinery streams such as reformate, alkylate and cracked naphtha. Aromatic compounds such as toluene raise density; light alkanes such as butane lower it.
EN 228 limits European petrol density to 0.720–0.775 kg/L at 15°C. Gasoline expands about 0.1% per °C, so pump volumes vary with weather.
What are the Uses of a Gasoline / Petrol Converter?
There are 4 main uses of a Gasoline / Petrol Converter.
Fuel station reconciliation
Station owners compare tanker mass with dispensed liters.
Small engine fuel
Users convert fuel weights for chainsaws and generators.
Light aircraft weight
Pilots convert avgas liters into weight and balance figures.
Shipping dangerous goods
Shippers convert volume to mass for UN1203 limits.