🔥 Natural Gas Converter
Move between cubic feet, cubic meters, therms, kWh, and more with realistic heating values.
Perfect for billing reviews, engineering studies, and energy audits when you need both volume and energy comparisons.
Average US residential natural gas heating value.
Energy content for 100 Cubic Feet (ft³) at 1,037 BTU/ft³
109.4093 MJ
Energy Units
Direct Volume Conversion
100 Cubic Feet (ft³) = 2.831685 Cubic Meters (m³)
How to Use This Calculator
Select your starting point
Choose whether you know the gas volume (cubic feet or meters) or the energy (therms, kWh, etc.).
Enter known values and heating content
Pick a typical heating profile or enter your own BTU per cubic foot from the utility bill for the most accurate results.
Read energy and volume equivalents
Copy the results into audits, billing comparisons, or engineering calculations.
Formula
Total BTU = Volume(ft³) × Heating Value (BTU/ft³)
Therms = Total BTU ÷ 100,000
MMBtu = Total BTU ÷ 1,000,000
kWh = Total BTU ÷ 3,412.141633
MJ = Total BTU × 1.05505585262 / 1,000,000
Volume conversions: 1 m³ = 35.3147 ft³
Use the formula breakdown to confirm the calculation logic or perform the conversion manually if needed.
Full Description
Natural gas customers often see both volume (cubic feet) and energy (therms, kWh) on statements. This converter bridges those metrics so you can compare energy sources fairly or audit utility bills.
Heating value varies with gas composition. By allowing preset profiles and custom BTU entries, the tool adapts to most real-world scenarios, from residential service to industrial supply.
Use it to estimate energy content for backup generators, calculate emissions, or translate supplier quotes into the units you need for budgeting.
Frequently Asked Questions
Where do I find the heating value?
Check the notes on your natural gas bill. Utilities publish the heating value (BTU per cubic foot) each month.
Why is the result approximate?
Gas composition and temperature vary. Using the published heating value keeps calculations aligned with billing but still approximate.
Can I convert between therms and kWh directly?
Yes. Use the energy mode and select therms as the input unit, then choose kWh as the target energy unit.
What if I work in SI units only?
Choose cubic meters and megajoules. The converter handles the necessary conversions automatically.