The Normalized Difference Vegetation Index (NDVI) is a simple graphical indicator that can be used to analyze remote sensing measurements, often from satellite imagery, to assess whether the target being observed contains live green vegetation.
NDVI values range from -1 to 1:
- -1 to 0.1: Water, barren areas, snow, clouds
- 0.1 to 0.3: Shrubs and grassland
- 0.3 to 0.8: Temperate and tropical forests
The NDVI Calculator is a powerful tool used to analyze vegetation health and density by using satellite or drone imagery. NDVI stands for Normalized Difference Vegetation Index. It’s commonly used in agriculture, forestry, and environmental science.
What Is NDVI?
NDVI is a numerical index that measures the difference between Near-Infrared (NIR) and Red light reflected by vegetation. Healthy vegetation reflects more NIR and less red light, while stressed or dead plants reflect more red and less NIR.
NDVI Formula
NDVI = (NIR - Red) / (NIR + Red)
The NDVI value ranges from -1 to +1. A higher value indicates healthier and denser vegetation.
NDVI Value Ranges
- 0.6 to 1 – Very dense, healthy vegetation
- 0.3 to 0.6 – Moderate vegetation
- 0.1 to 0.3 – Sparse vegetation or grass
- 0 to 0.1 – Bare soil or dead vegetation
- Below 0 – Water, snow, or clouds
Why Use an NDVI Calculator?
This calculator helps you:
- Track crop health and growth stages
- Monitor drought-affected areas
- Analyze deforestation or reforestation projects
- Study vegetation coverage in research
- Plan agricultural practices more effectively
How to Use the NDVI Calculator
- Input your NIR and Red values from satellite or drone data
- Click calculate (or the tool may auto-calculate)
- The NDVI value is displayed instantly
- Use the value to interpret vegetation health
Conclusion
The NDVI Calculator makes it easy to evaluate vegetation health using simple data inputs. Whether you're a farmer, researcher, or environmentalist, this tool provides quick and valuable insights into the green cover of an area. Try it today to monitor the earth with precision!