1function calculateThinsetQuantity(length, width, tileSize, unitSystem = "imperial") {
2  // Calculate area
3  const area = length * width;
4  
5  // Convert tile size to inches if in cm
6  let tileSizeInches = tileSize;
7  if (unitSystem === "metric") {
8    tileSizeInches = tileSize / 2.54; // Convert cm to inches
9  }
10  
11  // Determine coverage rate based on tile size
12  let coverageRate;
13  if (tileSizeInches <= 4) {
14    coverageRate = 0.18; // lbs per sq ft for small tiles
15  } else if (tileSizeInches <= 12) {
16    coverageRate = 0.22; // lbs per sq ft for medium tiles
17  } else {
18    coverageRate = 0.33; // lbs per sq ft for large tiles
19  }
20  
21  // Calculate base amount
22  let thinsetAmount;
23  if (unitSystem === "imperial") {
24    thinsetAmount = area * coverageRate;
25  } else {
26    // Convert coverage rate to kg/m²
27    const coverageRateMetric = coverageRate * 4.88; // Convert lbs/sq ft to kg/m²
28    thinsetAmount = area * coverageRateMetric;
29  }
30  
31  // Add 10% waste factor
32  thinsetAmount *= 1.1;
33  
34  return thinsetAmount.toFixed(2);
35}
36
37// Example usage
38const projectLength = 10; // feet
39const projectWidth = 8;   // feet
40const tileSize = 12;      // inches
41
42const thinsetNeeded = calculateThinsetQuantity(projectLength, projectWidth, tileSize);
43console.log(`You need approximately ${thinsetNeeded} lbs of thinset for your project.`);
44

1' Excel Function for Thinset Quantity Calculation
2Function CalculateThinsetQuantity(length As Double, width As Double, tileSize As Double, Optional unitSystem As String = "imperial") As Double
3    ' Calculate area
4    Dim area As Double
5    area = length * width
6    
7    ' Convert tile size to inches if in cm
8    Dim tileSizeInches As Double
9    If unitSystem = "metric" Then
10        tileSizeInches = tileSize / 2.54 ' Convert cm to inches
11    Else
12        tileSizeInches = tileSize
13    End If
14    
15    ' Determine coverage rate based on tile size
16    Dim coverageRate As Double
17    If tileSizeInches <= 4 Then
18        coverageRate = 0.18 ' lbs per sq ft for small tiles
19    ElseIf tileSizeInches <= 12 Then
20        coverageRate = 0.22 ' lbs per sq ft for medium tiles
21    Else
22        coverageRate = 0.33 ' lbs per sq ft for large tiles
23    End If
24    
25    ' Calculate base amount
26    Dim thinsetAmount As Double
27    If unitSystem = "imperial" Then
28        thinsetAmount = area * coverageRate
29    Else
30        ' Convert coverage rate to kg/m²
31        Dim coverageRateMetric As Double
32        coverageRateMetric = coverageRate * 4.88 ' Convert lbs/sq ft to kg/m²
33        thinsetAmount = area * coverageRateMetric
34    End If
35    
36    ' Add 10% waste factor
37    thinsetAmount = thinsetAmount * 1.1
38    
39    ' Round to 2 decimal places
40    CalculateThinsetQuantity = Round(thinsetAmount, 2)
41End Function
42
43' Usage in Excel:
44' =CalculateThinsetQuantity(10, 8, 12, "imperial")
45

1public class ThinsetCalculator {
2    public static double calculateThinsetQuantity(double length, double width, double tileSize, String unitSystem) {
3        // Calculate area
4        double area = length * width;
5        
6        // Convert tile size to inches if in cm
7        double tileSizeInches = tileSize;
8        if (unitSystem.equals("metric")) {
9            tileSizeInches = tileSize / 2.54; // Convert cm to inches
10        }
11        
12        // Determine coverage rate based on tile size
13        double coverageRate;
14        if (tileSizeInches <= 4) {
15            coverageRate = 0.18; // lbs per sq ft for small tiles
16        } else if (tileSizeInches <= 12) {
17            coverageRate = 0.22; // lbs per sq ft for medium tiles
18        } else {
19            coverageRate = 0.33; // lbs per sq ft for large tiles
20        }
21        
22        // Calculate base amount
23        double thinsetAmount;
24        if (unitSystem.equals("imperial")) {
25            thinsetAmount = area * coverageRate;
26        } else {
27            // Convert coverage rate to kg/m²
28            double coverageRateMetric = coverageRate * 4.88; // Convert lbs/sq ft to kg/m²
29            thinsetAmount = area * coverageRateMetric;
30        }
31        
32        // Add 10% waste factor
33        thinsetAmount *= 1.1;
34        
35        // Round to 2 decimal places
36        return Math.round(thinsetAmount * 100.0) / 100.0;
37    }
38    
39    public static void main(String[] args) {
40        double projectLength = 10.0; // feet
41        double projectWidth = 8.0;   // feet
42        double tileSize = 12.0;      // inches
43        String unitSystem = "imperial";
44        
45        double thinsetNeeded = calculateThinsetQuantity(projectLength, projectWidth, tileSize, unitSystem);
46        System.out.printf("You need approximately %.2f lbs of thinset for your project.%n", thinsetNeeded);
47    }
48}
49