US Therm

Team Physics -
Created by: Team Physics -, Last Updated: April 25, 2024

US Therm

What is US Therm?

A US therm is a unit of heat energy equal to 100,000 British thermal units (BTUs). It’s commonly used in the United States for billing purposes, particularly in natural gas sales. One US therm can raise the temperature of one pound of water by 1°F when burned.

The formula to calculate the number of US therms is:

T = B/100,000

Conversion of US Therm into other Units

Conversion of US Therm in to other Units
From / ToConversion FactorExample
US Therm to British Thermal Unit (BTU)1 US Therm = 100,00010 US Therm = 1,000,000 BTU
US Therm to kilowatt-hour (kWh)1 US Therm = 29.307110 US Therm ≈ 293.071 kWh
US Therm to megawatt-hour (MWh)1 US Therm = 0.029307110 US Therm ≈ 0.293071 MWh
US Therm to Joules1 US Therm = 105,506,00010 US Therm ≈ 1,055,060,000 J
US Therm to Calorie1 US Therm = 25,200,00010 US Therm ≈ 252,000,000 Cal
US Therm to Cubic feet of natural gas1 US Therm = 10010 US Therm = 1,000 Cubic feet
US Therm to Liters of gasoline equivalent1 US Therm = 28.310 US Therm ≈ 283 Liters


  • Each conversion factor represents a relationship between US therms and other units.
  • These conversions facilitate understanding and comparison across different energy measures.
  • For practical applications, knowing conversion factors enables accurate energy calculations.
  • Examples illustrate how US therms translate into various units, aiding comprehension.
  • These conversions are crucial in energy-related industries such as utilities and manufacturing.
  • Understanding these conversions enhances energy management and cost estimation efforts.
  • Utilizing conversion tables streamlines tasks involving energy measurement and analysis.

US Therm to British Thermal Unit (BTU)

1 US Therm = 100,000 British Thermal Unit (BTU)

1 US Therm is equivalent to a certain number of British Thermal Units (BTUs), which is a common unit of energy.

US Therm to kilowatt-hour (kWh)

1 US Therm = 29.3071 kilowatt-hour (kWh)

Kilowatt-hours are commonly used for electricity billing. This conversion tells you how many kWh are equivalent to 1 US Therm of energy.

US Therm to megawatt-hour (MWh)

1 US Therm = 0.0293071 megawatt-hour (MWh)

Megawatt-hours are used for large-scale energy measurements, often in industrial settings or for power generation. This conversion gives you the equivalent energy in MWh.

US Therm to Joules

1 US Therm = 105,506,000 Joules

Joules are the standard unit of energy in the International System of Units (SI). This conversion helps in understanding the energy equivalence in joules.

US Therm to Calorie

1 US Therm = 25,200,000 Calorie

Calories are another unit of energy commonly used in nutrition and dietetics. This conversion shows the energy equivalence in terms of calories.

US Therm to Cubic feet of natural gas

1 US Therm = 100 Cubic feet of natural gas

This conversion relates the energy content of 1 US Therm to the volume of natural gas it represents, which is useful for understanding the physical volume of gas consumed.

US Therm to Liters of gasoline equivalent

1 US Therm = 28.3 Liters of gasoline equivalent

This conversion compares the energy content of 1 US Therm to the volume of gasoline it would be equivalent to, aiding in understanding energy usage in terms of gasoline consumption.

Practical Application Example of US Therm

In residential settings, understanding US therms helps homeowners manage heating costs more efficiently. For instance, a homeowner can track their monthly gas consumption in US therms to budget effectively. HVAC professionals use US therms to size heating systems accurately, ensuring optimal performance and energy efficiency. Utility companies bill customers based on US therms consumed, reflecting actual energy usage. Government agencies and policymakers use US therms as a standard metric for energy consumption analysis and policy development.

What are the Uses of US Therm? of US Therm

Scientific Research and Experiments

  • Climate Studies: US therms are utilized to quantify energy consumption patterns, aiding climate change research.
  • Experimental Analysis: Researchers employ US therms to measure energy output and efficiency in laboratory experiments, facilitating advancements in energy technology.

Engineering and Technology

  • Design: Engineers use US therms as a reference for sizing heating systems.
  • Efficiency: Optimizing system design based on US therms minimizes energy waste.
  • Automation: Smart systems adjust energy usage based on US therm data for efficiency.

Everyday Applications

  • Accurate Billing: Utility companies bill customers based on US therms consumed, ensuring accurate charges.
  • Consumption Awareness: Knowing US therms helps customers understand their energy usage

Home Energy Management:

  • Budgeting: Tracking gas consumption in US therms aids in budgeting for heating expenses.
  • Efficiency: Understanding US therms helps optimize heating systems for energy efficiency, reducing costs.
  • Billing and Pricing: US therms serve as a common unit for billing and pricing in natural gas transactions, facilitating accurate financial transactions.Billing and Pricing.

Environmental and Energy Sectors

  • Monitoring: US therms aid in tracking energy consumption and emissions, supporting environmental monitoring efforts.
  • Emission Reduction: Utilizing US therms allows for targeted reduction strategies, promoting sustainability goals.

Health and Safety


  • Proper ventilation ensures safe dispersal of combustion byproducts.
  • Carbon monoxide detectors essential for early detection of hazardous gas levels.


  • Regular maintenance prevents malfunctions and potential gas leaks.
  • Emergency protocols establish clear procedures for gas-related incidents.


Can US therms be used to measure renewable energy consumption?

Yes, US therms can quantify renewable energy usage, especially in systems like biomass or biogas. However, their primary association is with fossil fuel consumption, so it’s essential to differentiate.

How do US therms relate to energy efficiency ratings?

Energy efficiency ratings often consider US therms as a baseline for comparison. Higher efficiency means fewer therms needed for the same output, resulting in cost savings and reduced environmental impact.

Are there international equivalents to the US therm?

Yes, various countries use similar units such as the UK therm or the metric ton of oil equivalent (Mtoe). These units allow for global energy comparisons and standardization.

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