Determining the Right Number of Fire Extinguishers for Your Facility

fire extinguishers Memphis
December 21, 2023

Fire safety is paramount in any facility, be it an office, warehouse, or manufacturing plant. One crucial aspect of ensuring a safe environment is determining the appropriate number of fire extinguishers needed. In this guide, we will walk you through the factors to consider when calculating the number of fire extinguishers required for your facility.

Understand Your Facility:

Before embarking on the calculation, it’s essential to understand the layout and nature of your facility. Different areas may pose varying fire risks based on the materials present, equipment used, and the size of the space. Seeking help to determine the fire load will guide you in selecting the number of fire extinguishers.

Consider the Fire Hazard Level:

Identify the potential fire hazards in each area of your facility. Classify them based on the five classes of fires: A (ordinary combustibles), B (flammable liquids), C (electrical), D (combustible metals), and K (kitchen fires). Understanding the specific fire risks will guide you in selecting the right type of extinguishers for each location.

Follow Fire Code and Regulations:

Adherence to local fire codes and regulations is crucial. These guidelines often specify the minimum number and type of fire extinguishers required based on the size and purpose of the facility. Consult with local authorities or fire safety professionals to ensure compliance with regulations.

Use the NFPA 10 Guidelines:

The National Fire Protection Association (NFPA) provides guidelines for determining the number of fire extinguishers needed in a facility. Factors considered include the occupancy classification, floor area, and potential fire hazards. NFPA 10 is widely recognized and offers an authoritative guide to fire safety. A good rule of thumb is that you shouldn’t walk more than 75 feet to get to a portable extinguisher.

Consider Extinguisher Placement:

Strategic placement of fire extinguishers is key to quick response in the event of a fire. Ensure that extinguishers are easily accessible, visible, and located near potential fire hazards. Common areas for fire extinguisher placement include kitchens, electrical rooms, exits, and areas with high fire risk.

Calculate Based on Square Footage:

A common method for determining the number of fire extinguishers is to use the square footage of your facility. NFPA 10 provides a formula that considers the floor area and the hazard level to calculate the minimum number of extinguishers required. This formula helps ensure adequate coverage throughout the facility.

  • For buildings less than 3,000 square feet, at least one 2-A:10-B:C fire extinguisher is required.
  • For buildings between 3,000 and 6,000 square feet in size, at least two 2-A:10-B:C fire extinguishers are required.
  • For buildings between 6,000 and 12,000 square feet in size, at least three 2-A:10-B:C fire extinguishers are required.
  • For buildings between 12,000 and 18,000 square feet in size, at least four 2-A:10-B:C fire extinguishers are required.
  • A fire protection professional should determine the number of fire extinguishers needed for buildings larger than 18,000 square feet.

Regular Maintenance and Inspection:

Once you have determined the appropriate number of fire extinguishers, it’s essential to establish a routine maintenance and inspection schedule. Regular checks ensure that all extinguishers are in proper working condition, fully charged, and ready for use in an emergency.


Calculating the correct number of fire extinguishers for your facility involves a thorough understanding of the potential fire hazards and compliance with regulations. By following the guidelines from organizations like the NFPA and local authorities, strategically placing extinguishers, and maintaining a regular inspection routine, you will improve the overall fire safety of your facility. Remember, prevention and preparedness are key to mitigating the risks associated with fires.