Calculated Rates Shopify

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Shopify Calculated Shipping & Dimensional Weight Estimator

139 (UPS/FedEx Domestic) 166 (Retail/International) 194 (Lighter carriers)

Calculated Results

Dimensional Weight: 0 lbs

Billable Weight: 0 lbs

Markup Amount: $0.00

Final Customer Shipping Rate: $0.00

Understanding Calculated Rates in Shopify

Shopify's "Calculated Rates" feature (often called Carrier-Calculated Shipping or CCS) allows merchants to provide real-time shipping quotes from carriers like USPS, UPS, FedEx, and DHL directly at checkout. This ensures you never undercharge or overcharge your customers for shipping based on the actual items in their cart.

How Dimensional Weight Affects Your Costs

Carriers don't just look at how heavy a box is; they look at how much space it takes up in the truck. This is called Dimensional Weight (Dim Weight). If you ship a large box full of feathers, you will be charged as if it were heavy because it occupies significant volume. Shopify uses your "Default Package" dimensions to help calculate these rates, but it's crucial to understand the formula:

(Length x Width x Height) / Carrier Divisor = Dimensional Weight

Optimizing Your Shopify Shipping Settings

  1. Markup and Handling: You can add a percentage or flat fee on top of the calculated rate to cover packaging materials and labor.
  2. Package Accuracy: Ensure your "Default Package" in Shopify settings matches your most common shipping box to get the most accurate Dim Weight calculations.
  3. Weight-Based Adjustments: If your carrier rates are consistently lower than what you pay at the counter, check if your product weights include the weight of the box.

Example Calculation

If you ship a box that is 12x12x12 inches with an actual weight of 5 lbs using a UPS divisor of 139:

  • Dim Weight: (12*12*12) / 139 = 12.43 lbs.
  • Billable Weight: Since 12.43 is higher than 5, you are billed for 13 lbs.
  • Final Rate: If the base rate is $15.00 and you have a 10% markup, the customer pays $16.50.
function calculateShopifyRate() { var actualWeight = parseFloat(document.getElementById("actualWeight").value) || 0; var divisor = parseFloat(document.getElementById("dimDivisor").value) || 139; var length = parseFloat(document.getElementById("packageLength").value) || 0; var width = parseFloat(document.getElementById("packageWidth").value) || 0; var height = parseFloat(document.getElementById("packageHeight").value) || 0; var baseRate = parseFloat(document.getElementById("baseRate").value) || 0; var markupPercent = parseFloat(document.getElementById("markupPercent").value) || 0; var handlingFee = parseFloat(document.getElementById("handlingFee").value) || 0; // Calculate Dimensional Weight var dimWeight = (length * width * height) / divisor; // Billable weight is the greater of the two var billableWeight = Math.max(actualWeight, dimWeight); // Calculate Markups var markupAmount = baseRate * (markupPercent / 100); var finalRate = baseRate + markupAmount + handlingFee; // Update UI document.getElementById("resDimWeight").innerText = dimWeight.toFixed(2); document.getElementById("resBillableWeight").innerText = Math.ceil(billableWeight); // Carriers usually round up document.getElementById("resMarkup").innerText = markupAmount.toFixed(2); document.getElementById("resTotal").innerText = finalRate.toFixed(2); document.getElementById("resultArea").style.display = "block"; }

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