°API
API Gravity
Other System

API Gravity (°API)

API gravity (°API) is the petroleum industry standard for crude oil density. Formula: API = 141.5/SG - 131.5. Higher API = lighter oil: light crude 31-40°API, heavy crude 10-22°API. Water = 10°API. Critical for refinery processing and pricing.

Convert From Degrees API

Convert To Degrees API

Conversion Factors

1 °API 0 kg/m³
1 °API 0 g/cm³
1 °API 0 kg/L
1 °API 0 g/mL
1 °API 0 g/L
1 °API 0 mg/mL
1 °API 0 mg/L
1 °API 0 kg/cm³
1 °API 0 g/m³
1 °API 0 mg/cm³
1 °API 0 t/m³
1 °API 0 lb/ft³
1 °API 0 lb/in³
1 °API 0 lb/gal (US)
1 °API 0 lb/gal (UK)
1 °API 0 oz/ft³
1 °API 0 oz/in³
1 °API 0 oz/gal (US)
1 °API 0 slug/ft³
1 °API 0 lb/yd³
1 °API 0 ton/yd³
1 °API 0 SG
1 °API 0 °Bé

Related Units