Air-Purifying Plants Calculator
Estimate how many plants a room needs for a noticeable green boost.
Counts assume medium-sized plants. Two small plants ≈ one medium; one large floor plant ≈ two medium.
How green should your room be?
Whether you want a few air-freshening plants or a full indoor jungle, it helps to have a target. Based on the commonly cited "one to two plants per 100 square feet" rule of thumb, this tool turns your room size into a comfortable starting number and a lusher goal.
Good air-purifying picks
Snake plant, pothos, peace lily, spider plant, rubber plant, and areca palm are all easy, widely available choices that featured in air-quality research.
Frequently Asked Questions
Do houseplants really clean the air?
They help modestly. The famous NASA Clean Air Study showed plants remove some airborne toxins in sealed lab chambers; in a real, ventilated room the effect is smaller. Think of plants as a pleasant boost to a space, not a replacement for ventilation or an air purifier.
How many plants is realistic?
The often-quoted guideline is about 1-2 medium plants per 9-10 m² (100 sq ft). This calculator gives a comfortable target and a fuller "green" target so you can choose based on space and budget.
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Pot & Soil Volume
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