Soil Moisture Calculator
Calculate gravimetric and volumetric soil moisture from wet and dry sample weights.
How to Use the Soil Moisture Calculator
- Weigh the moist soil sample (g).
- Dry the sample at 105°C to constant mass and weigh (g).
- Enter both values and the soil bulk density.
- Click Calculate to get moisture content.
حالات الاستخدام
- •Laboratory determination of soil moisture.
- •Monitoring moisture at seeding and tillage.
- •Calculating irrigation rates and water balance.
- •Agrophysical research and field monitoring.
الصيغة
Gravimetric moisture (%) = (wet weight − dry weight) / dry weight × 100. Volumetric = gravimetric × bulk density.
الأسئلة الشائعة
What is the difference between gravimetric and volumetric moisture?
Gravimetric moisture is the mass of water per unit mass of dry soil. Volumetric moisture is water volume per unit soil volume. Volumetric = gravimetric × bulk density.
How should I dry the soil sample?
Dry at 105°C to constant mass (usually 24-48 hours) in a drying oven.
What is a typical soil bulk density?
For most soils, 1.1-1.5 g/cm³. The default value used is 1.3 g/cm³.