Physics

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Moisture Content Calculator.

Calculate water mass and moisture percentage on both wet and dry bases from measured wet and dry masses.

On-device calculationNo signup
01

Set your values

Results update as you type.

Water mass: 0.25 kg

Water mass

0.00000000kg
Wet-basis fraction: 0.2 ×

Wet-basis fraction

0.00000000×
Dry-basis fraction: 0.25 ×

Dry-basis fraction

0.00000000×
Wet-basis moisture: 20 %

Wet-basis moisture

0.00000000%
Dry-basis moisture: 25 %

Dry-basis moisture

0.00000000%

Results update automatically as you type.

Wet basis divides water mass by wet mass; dry basis divides by dry mass. Both masses are measured inputs, with no crop, food, or material assumptions.

Use Cases

Quality control in food processing

Monitor moisture levels in grains, powders, or dried foods to ensure product consistency and shelf stability.

Example: Check if a batch of dried pasta meets the target moisture content.

Construction material testing

Determine moisture content of soil, sand, or wood before use in building projects to prevent structural issues.

Example: Test a soil sample before compaction for a foundation.

Frequently Asked Questions

What is the difference between wet-basis and dry-basis moisture content?
Wet-basis moisture content is the mass of water divided by the total wet mass, expressed as a percentage. Dry-basis moisture content is the mass of water divided by the dry mass, also as a percentage. This calculator provides both from your wet and dry mass inputs.
How do I measure wet and dry mass for this calculator?
Weigh the material sample before drying to get the wet mass. Then dry it in an oven at a specified temperature until constant weight, and weigh again to get the dry mass. Enter both values in kilograms.
Can I use this calculator for any material?
Yes, the calculator works for any material where moisture content is defined as the mass of water relative to wet or dry mass. Common uses include soil, wood, food, and aggregates. Ensure you use consistent units (kg) for both masses.

Tips & Common Mistakes

Tips

  • Ensure both wet and dry masses are measured in kilograms for accurate results.
  • Dry the sample until its mass stops changing to get a true dry mass.
  • Use a precise scale, especially for small samples, to reduce errors.
  • Record the drying temperature and time for reproducibility.

Common Mistakes to Avoid

  • Using different units for wet and dry mass (e.g., grams and kilograms) without conversion.
  • Entering the dry mass as zero, which leads to division by zero errors.
  • Forgetting to subtract the container mass when weighing the sample.

Last updated: August 13, 2026