CO₂ Enrichment Calculator

Calculate CO₂ injection rate and cost to reach target PPM in a greenhouse accounting for air exchange and plant uptake.

Greenhouse Length

Greenhouse Width

Average Height

Ambient CO₂

ppm

Target CO₂

ppm

Air Exchanges/Hour

Enrichment Hours/Day

hrs

CO₂ Cost

$/lb

Tab to move between fields

Injection Rate

2.43 lbs/hr

Monthly Cost

$109.19

Greenhouse Volume34,560 cu ft

PPM Increase600 ppm

Initial CO₂ Fill2.37 lbs

CO₂ Flow Rate21.2 CFH

Daily CO₂ Usage24.27 lbs

How to Use This Calculator

Enter your greenhouse interior dimensions (length, width, height in feet) to establish the total air volume.
Enter ambient CO₂ (typically ~400 ppm) and your target CO₂ level — 1,000 ppm is a common starting point for enhanced growth.
Enter air exchanges per hour and daily enrichment hours (inject only during lit hours when plants are photosynthesizing).
Enter your CO₂ cost per pound to get Daily CO₂ Usage (lbs) and Monthly Cost.
Use the Injection Rate (lbs/hr) and CO₂ Flow Rate (CFH) to size your regulator and distribution system.

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