Pizza Oven Hood Exhaust Calculator
Exhaust hood airflow for a wood or gas pizza oven.
Enter your values
Enter the hood opening length in ft.
Choose one of: Gas deck oven (300 CFM/ft), Wood-fired (500 CFM/ft).
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Exhaust airflow
- 3,000 CFM
- Rate used
- 500 CFM/ft
- Makeup air (85%)
- 2,550 CFM
- Spark arrestor
- Required in duct/stack for wood-fired ovens
Quick answer
Wood-fired pizza oven hoods are commonly sized at 400-600 CFM per linear foot of hood opening due to the high, sustained heat and particulate load.
CFM = hood opening length x CFM per linear foot
At a glance
| What it does | Exhaust hood airflow for a wood or gas pizza oven. |
|---|---|
| Category | HVAC & Airflow |
| Inputs needed | Hood opening length, Fuel type |
| Main output | Exhaust airflow |
| Formula | CFM = hood opening length x CFM per linear foot |
| Cost | Free — no sign-up, no download |
How to use the Pizza Oven Hood Exhaust Calculator
- 1Measure the hood opening length over the oven mouth.
- 2Select gas or wood fuel — wood needs a higher rate and a spark arrestor.
- 3Provide makeup air at 85-95% of exhaust to keep the kitchen balanced.
Inputs explained
- Hood opening length(ft)
- Enter the hood opening length in ft.
- Fuel type
- Choose one of: Gas deck oven (300 CFM/ft), Wood-fired (500 CFM/ft).
Worked example
Using the values the calculator loads with:
Inputs
- Hood opening length6 ft
- Fuel typeWood-fired (500 CFM/ft)
Results
- Exhaust airflow3,000 CFM
- Rate used500 CFM/ft
- Makeup air (85%)2,550 CFM
- Spark arrestorRequired in duct/stack for wood-fired ovens
Frequently asked questions
Does a wood oven need a grease duct?
Yes, plus a spark arrestor and often a separate Class I chimney system per local fire code.
Can the same hood serve other equipment?
Only if it is rated for the combined heat and effluent load; wood ovens are often given dedicated hoods.
What do I need to enter into the Pizza Oven Hood Exhaust Calculator?
Just 2 values: hood opening length, fuel type. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Pizza Oven Hood Exhaust Calculator work out the answer?
Wood-fired pizza oven hoods are commonly sized at 400-600 CFM per linear foot of hood opening due to the high, sustained heat and particulate load. It applies the formula CFM = hood opening length x CFM per linear foot and shows the working so you can check each step by hand.
Is the Pizza Oven Hood Exhaust Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.