Water Potential Calculator
Free calculate water potential in plants using solute potential, pressure potential, and matric potential.
Water Potential Analysis
Water Potential Results
Enter parameters to calculate water potential
Water Potential Components
Solute Potential (Ψs)
- • Due to dissolved solutes
- • Always negative
- • Ψs = -iCRT
- • Reduces water potential
- • Depends on concentration
Pressure Potential (Ψp)
- • Due to turgor pressure
- • Can be positive or negative
- • Positive in turgid cells
- • Negative in xylem
- • Affects cell expansion
Matric Potential (Ψm)
- • Due to surface forces
- • Important in soil
- • Always negative
- • Affects water retention
- • Depends on soil texture
Typical Water Potential Ranges
| System | Water Potential | Conditions |
|---|---|---|
| Pure Water | 0 MPa | Reference standard |
| Well-Watered Plant | -0.2 to -0.5 MPa | Turgid cells |
| Stressed Plant | -1.0 to -2.0 MPa | Water deficit |
| Soil Water | -0.01 to -1.5 MPa | Field capacity to wilting |