MetandumFREE TOOLS. NO SUBSCRIPTION.Find a calculator ⌕My projects
MEASURE ONCE. PLAN YOUR PURCHASE.

Moisture Mass Adjustment calculator.

Separate water mass from dry material using a supplied dry-basis moisture percentage.

PROCUREMENT

Your inputs

Use measurements from your plan and properties from your chosen product. Any prefilled values are illustrative.

Where to get this value

Enter your own allowance. Presets are input shortcuts, not a construction recommendation.

YOUR ESTIMATE
∑

A clear estimate starts here.

Enter your dimensions and product details to see the quantity and purchase breakdown.

CONTINUE YOUR PLAN

Find the next material.

Keep the quantity, then use another tool for the remaining parts of your purchase.

Explore all calculators
Formula and assumptions
BEHIND THE NUMBERS

How this calculation works.

The percentage is water mass divided by dry material mass. This is not wet-basis moisture and does not choose a drying target or mixture specification.

Water mass = dry mass × dry-basis moisture %; wet mass = dry + waterCalculated with normalised units

A worked example

Illustrative inputs only. Product properties and design dimensions are not recommendations for your project.

Dry material mass
100 kg
Moisture on dry-mass basis
20 %

Wet material mass: 120 kg

Before you purchase

Use dimensions from your plan and properties from your chosen product. Any design spacing, section or fixing pattern must already be specified.

Method: dimensional arithmetic and user-supplied specifications. Software checks: 2026-10-04. Calculation and review policy.

Check your purchase assumptions

Connected work guides and comparisons

Explore material mass, density and specified mixes

Browse all work types

Prepare your material measurements and product data

Find material sheets for this calculator

Compare supplied alternatives and quantity changes

Browse all quantity scenarios