Fuel Efficiency-Volume Converter
Convert J/m³, J/L, BTU/ft³, therm/ft³, and more — instantly.
Free fuel efficiency (volume) converter. Convert joules per cubic meter to BTU, therm, and calorie variants; volume-per-energy units use verified inverse math. Use the express converter for any unit pair, or open a quick conversion below.
1 joule per cubic meter = 0.0000268392 BTU (IT) per cubic foot
Popular conversions
Hand-picked pairs with dedicated converter pages — open one to convert instantly.
Joule per Cubic Meter → BTU (IT) per Cubic Foot
Joule per Cubic Meter to BTU (IT) per Cubic Foot
BTU (IT) per Cubic Foot → Joule per Cubic Meter
BTU (IT) per Cubic Foot to Joule per Cubic Meter
Browse all fuel efficiency (volume) units
Pick any unit to open a two-way conversion. IT and thermochemical calories/BTUs are labeled separately. Volume-per-energy reciprocal units use inverse math.
JOULE PER CUBIC METER
1 J/m³ = 0.0000268392 BTU (IT)/ft³
JOULE PER LITER
1 J/L = 1,000 J/m³
KILOJOULE PER CUBIC METER
1 kJ/m³ = 0.0268391917 BTU (IT)/ft³
MEGAJOULE PER CUBIC METER
1 MJ/m³ = 1,000,000 J/m³
KILOCALORIE (IT) PER CUBIC METER
1 kcal (IT)/m³ = 4,186.8 J/m³
CALORIE (IT) PER CUBIC CENTIMETER
1 cal (IT)/cm³ = 4,186,800 J/m³
BTU (IT) PER CUBIC FOOT
1 BTU (IT)/ft³ = 37,258.94617 J/m³
BTU (THERMOCHEMICAL) PER CUBIC FOOT
1 BTU (th)/ft³ = 37,234.028 J/m³
THERM PER CUBIC FOOT
1 therm/ft³ = 3,725,894,617 J/m³
THERM PER GALLON (UK)
1 therm/gal (UK) = 23,208,000,020 J/m³
CHU PER CUBIC FOOT
1 CHU/ft³ = 67,066.1 J/m³
CUBIC METER PER JOULE
1 m³/J = 1 J/m³
LITER PER JOULE
1 L/J = 1,000 J/m³
GALLON (US) PER HORSEPOWER
1 gal (US)/hp = 709,175,035.869 J/m³
No units match this filter.