Gravimetric coating thickness
Mistake: Using one face of the specimen when both sides are coated.
Fix: Add all coated face areas before entering the total.
Calculators · Free
Gravimetric coating thickness
Estimate area-average dry coating thickness from isolated coating mass, area and density.
01Enter your values
Runs in your browserRuns offline in your browser. Once the page and required files have loaded, processing needs no internet.
02Gravimetric coating thickness
Runs in your browser
How it works
Estimate area-average dry coating thickness from isolated coating mass, area and density.
t(µm) = m(g) × 10⁴ / [ρ(g/cm³) × A(cm²)]
The mass must isolate the coating. Substrate loss, retained water or reaction products invalidate a simple specimen mass difference. Include all coated faces in the area. User-supplied density must represent the actual dry coating. The result is an average, not local minimum thickness, uniformity or specification compliance. Calculation works offline after loading.
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Inputs are processed on this page and are never sent to a server.
About this tool
Use tool ↑Estimate area-average dry coating thickness from isolated coating mass, area and density.
Divide coating mass by density to obtain coating volume, then divide by total coated area for equivalent mean thickness. In base units, thickness in µm = mass in g / (density in g/cm³ × area in cm²) × 10000. Areal mass in g/m² = mass / area × 10000.
How to use it
- Enter your values
Isolated coating mass · Total coated area · Dry coating density
- Calculate / generate
Estimate area-average dry coating thickness from isolated coating mass, area and density.
- Result
Equivalent mean thickness: 50 µm Coating areal mass: 200 g/m²
Calculation method
- Divide coating mass by density to obtain coating volume, then divide by total coated area for equivalent mean thickness.
- In base units, thickness in µm = mass in g / (density in g/cm³ × area in cm²) × 10000.
- Areal mass in g/m² = mass / area × 10000.
t(µm) = m(g) × 10⁴ / [ρ(g/cm³) × A(cm²)]
Gravimetric coating thickness
- Isolated coating mass
- 2 g
- Total coated area
- 100 cm²
- Dry coating density
- 4 g/cm³
Result
Equivalent mean thickness: 50 µm Coating areal mass: 200 g/m²
Frequently asked questions
What does this result assume?
The mass must isolate the coating. Substrate loss, retained water or reaction products invalidate a simple specimen mass difference. Include all coated faces in the area. User-supplied density must represent the actual dry coating. The result is an average, not local minimum thickness, uniformity or specification compliance. Calculation works offline after loading.
Where does my data go?
Calculations run on your device. Form inputs are not sent to a server.
Terms and definitions
Enter your values
- Measurement system
The initial choice follows your browser region. Your choice is remembered on this device. Gallons are US gallons. Switching units keeps your numbers unchanged and interprets them in the new unit.
Numbers stay unchanged. Check the new unit and enter the intended measurement, or select an example for that system.
- Isolated coating mass
Mass attributable only to the coating; zero is allowed, negative differences are rejected.
Enter a numerical value for this quantity. Use the unit shown beside this field. g / oz
Minimum: 0 · Maximum: 1000000000000 g
- Total coated area
Sum of all coated faces, including both sides when applicable.
Enter a numerical value for this quantity. Use the unit shown beside this field. cm² / in²
Minimum: 1e-12 · Maximum: 1000000000000 cm²
- Dry coating density
Actual dry coating mass per unit volume in the displayed unit; no material density is inferred.
Enter a numerical value for this quantity. Use the unit shown beside this field. g/cm³ / lb/in³
Minimum: 1e-12 · Maximum: 1000000000000 g/cm³
Result
- Result
Divide coating mass by density to obtain coating volume, then divide by total coated area for equivalent mean thickness. In base units, thickness in µm = mass in g / (density in g/cm³ × area in cm²) × 10000. Areal mass in g/m² = mass / area × 10000.
Calculated from your entries using the method below.
- Equivalent mean thickness
Density-based coating volume divided by total coated area.
Calculated from your entries using the method below.
- Coating areal mass
Measured coating mass divided by the total coated area.
Calculated from your entries using the method below.
- Value
Divide coating mass by density to obtain coating volume, then divide by total coated area for equivalent mean thickness. In base units, thickness in µm = mass in g / (density in g/cm³ × area in cm²) × 10000. Areal mass in g/m² = mass / area × 10000.
Calculated from your entries using the method below.
- Unit
In base units, thickness in µm = mass in g / (density in g/cm³ × area in cm²) × 10000.
Calculated from your entries using the method below.
Common mistakes and quick fixes
Limits and key assumptions
- The mass must isolate the coating. Substrate loss, retained water or reaction products invalidate a simple specimen mass difference. Include all coated faces in the area. User-supplied density must represent the actual dry coating. The result is an average, not local minimum thickness, uniformity or specification compliance. Calculation works offline after loading.
- Displayed results may be rounded; rounding does not add measurement precision.