Light Requirement Calculator
Assess light levels by window direction and distance.
Light & Humidity Tools
Grow Light Distance Calculator
Calculate the ideal distance between your plant and grow light based on light type and plant needs.
Humidity Calculator
Find the ideal humidity range for your plant and get tips to increase or reduce humidity.
VPD Calculator
Calculate vapor pressure deficit (VPD) from air temperature and relative humidity, with ideal ranges for each plant growth stage.
DWC / Hydroponics Nutrient Calculator
Calculate how much dry nutrient salt mix (Masterblend, Jack's, or similar) to add to a deep-water-culture (DWC) reservoir to reach a target PPM from a current reading.
Summer Heat Stress Checker
Check if your plant is suffering from heat stress and learn how to protect it.
Winter Plant Care Planner
Adjust watering, light, humidity, and fertilizer during colder months.
Monsoon Plant Care Tool
Adjust watering, light, pest prevention, and fungus control during rainy or humid weather.
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Frequently asked questions
What are plant calculators?
Plant calculators are interactive tools that help you make plant care decisions based on your plant type, pot size, light, soil, season, symptoms, and care habits.
Are these plant tools free?
Yes, the plant calculators and care tools on this page are free to use.
Can these tools diagnose plant problems?
Some tools can help identify likely causes of common plant symptoms such as yellow leaves, brown tips, drooping leaves, leaf curl, spots, pests, and root rot. They are meant for guidance, not professional diagnosis.
Which tool should I use if my plant is dying?
Start with the Why Is My Plant Dying? tool or the Plant Problem Diagnosis tool. If you already know the main symptom, use a specific tool such as Yellow Leaves Diagnosis Tool, Brown Tips Diagnosis Tool, or Root Rot Risk Checker.
Which tool helps with watering?
Use the Plant Watering Calculator to estimate watering frequency and the Water Amount Calculator to estimate how much water to use.
Which tool helps me choose a plant?
Use Best Plant for My Room Finder, Beginner Plant Finder, Low Light Plant Finder, Office Plant Finder, Balcony Plant Finder, Bathroom Plant Finder, or Pet-Safe Plant Finder.