⛽ 15°C → Observed Temp

Fuel Type Density @ 15 °C (kg/m³) Observed Temperature (°C) Observed Volume (litres) – Optional
Leave blank to skip volume correction

🌡️ Observed Temp → 15°C

Fuel Type Observed Density (kg/m³) Observed Temperature (°C) Observed Volume (litres) – Optional
Leave blank to skip volume correction
⚖️ Formula based on API MPMS Chapter 11.1 (simplified). For custody transfer and official billing, refer to ASTM / API tables.