Amazon Ti Calculator

Your Amazon Transportation Index (TI) Score

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On-Time Shipment Rate

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Average Lead Time

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Time Efficiency Index

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On-Time Orders

The TI Score is a weighted measure of your on-time shipment performance and fulfillment time efficiency.

Dynamic chart illustrating key performance indicators.

What is the Amazon TI Calculator?

The Amazon TI Calculator is a specialized tool designed for Amazon sellers to measure their logistics and fulfillment performance. In this context, “TI” stands for Transportation Index or Timeliness Index. It’s not a financial calculator, but a key performance indicator (KPI) tool that provides a score based on how efficiently and reliably you deliver orders to customers. A high TI score indicates excellent operational health, which is crucial for maintaining a good seller rating and winning the Buy Box on Amazon.

This calculator helps you understand complex metrics like on-time shipment rates and fulfillment cycle times. By using the Amazon TI calculator, you can pinpoint weaknesses in your supply chain, from handling delays to slow transit times, and make data-driven decisions to improve your processes. This is essential for meeting Amazon’s strict delivery standards and customer expectations.

The Amazon TI Calculator Formula

Our Amazon TI Calculator uses a composite formula to generate a single score that reflects your overall transportation and fulfillment efficiency. It’s based on two primary components: your ability to ship on time and the speed of your entire fulfillment process.

Primary Formula

Transportation Index (TI) Score = (On-Time Shipment Rate * 0.6) + (Time Efficiency Index * 0.4)

This formula gives more weight (60%) to shipping orders on time, as this is a critical factor in customer satisfaction on Amazon. The remaining 40% is allocated to the efficiency of your internal processes.

Component Formulas

1. On-Time Shipment Rate (%): The percentage of orders shipped within the promised timeframe.

(Total Orders - Late Shipments) / Total Orders * 100

2. Time Efficiency Index (%): A score representing how much of your total lead time is spent on value-added activity (transit) versus internal processing (handling). A lower percentage of handling time results in a higher score.

(1 - (Handling Time / (Handling Time + Transit Time))) * 100

Variables Table

Description of variables used in the Amazon TI calculator.

Variable	Meaning	Unit	Typical Range
Total Orders	The total number of units or orders processed.	Count	1 – 10,000+
Late Shipments	Number of orders shipped after the promised date.	Count	0 – Total Orders
Handling Time	Average time from receiving an order to shipping it.	Days	0.5 – 5
Transit Time	Average time the carrier takes to deliver the package.	Days	1 – 10

Practical Examples

Here are two scenarios to illustrate how the Amazon TI calculator works in practice.

Example 1: High-Performing Seller

• Inputs:
  • Total Orders: 1000
  • Late Shipments: 10
  • Average Handling Time: 1 day
  • Average Transit Time: 2.5 days
• Results:
  • On-Time Shipment Rate: 99.0%
  • Average Lead Time: 3.5 days
  • Time Efficiency Index: 71.4%
  • Transportation Index (TI) Score: 88.0

This seller has a very low rate of late shipments and processes orders quickly, resulting in an excellent TI score.

Example 2: Seller with Fulfillment Issues

• Inputs:
  • Total Orders: 200
  • Late Shipments: 30
  • Average Handling Time: 4 days
  • Average Transit Time: 5 days
• Results:
  • On-Time Shipment Rate: 85.0%
  • Average Lead Time: 9.0 days
  • Time Efficiency Index: 55.6%
  • Transportation Index (TI) Score: 73.2

This seller’s high number of late shipments and long handling time significantly lower their TI score, signaling a need for operational improvements.

How to Use This Amazon TI Calculator

1. Enter Total Orders: Input the total number of orders you shipped during your chosen analysis period.
2. Enter Late Shipments: Input the number of those orders that were not shipped by the promised date.
3. Enter Handling Time: Input your average time in days to pick, pack, and ship an order after it’s received.
4. Enter Transit Time: Input the average time in days your carrier takes to deliver the order once shipped.
5. Analyze Your Results: The calculator automatically provides your overall TI Score and breaks it down into the On-Time Shipment Rate and Time Efficiency Index. Use these metrics to identify where you can improve.
6. Use the Chart: The visual chart helps you quickly compare your performance metrics.

Key Factors That Affect Your Amazon TI Score

• Inventory Management: Inaccurate stock levels can lead to backorders and shipping delays. An efficient system is crucial.
• Warehouse Efficiency: The layout of your warehouse and the efficiency of your picking and packing process directly impact handling time.
• Carrier Performance: The reliability of your shipping carrier is a major factor in transit time and on-time delivery.
• Order Processing Automation: Automating order intake and processing can significantly reduce handling time and errors.
• Staffing and Training: Properly trained and adequate staffing during peak times prevents backlogs and delays.
• Geographic Location: Your warehouse’s proximity to customers and carrier hubs can affect transit times and costs.

Frequently Asked Questions

1. What is a good Amazon TI score?

A score above 85 is generally considered good to excellent. A score between 70-85 indicates average performance with room for improvement. A score below 70 suggests significant issues in your fulfillment process that need immediate attention.

2. How can I improve my handling time?

Organize your warehouse for efficient picking, use an automated order management system, and ensure you have enough staff during peak hours.

3. What’s the difference between handling time and transit time?

Handling time is the duration you control: from when an order is placed until it’s handed off to the carrier. Transit time is the duration the carrier controls: from when they pick it up until it’s delivered to the customer.

4. Why is On-Time Shipment Rate so important?

Amazon’s algorithm heavily favors sellers who ship on time. It is a key factor for winning the Buy Box, maintaining eligibility for programs like Seller Fulfilled Prime, and ensuring high customer satisfaction.

5. Can this calculator be used for FBA (Fulfillment by Amazon)?

This calculator is primarily designed for FBM (Fulfillment by Merchant) sellers, as they directly control handling and shipment. FBA sellers’ performance is managed by Amazon, but understanding these metrics can still be insightful.

6. How often should I use the Amazon TI calculator?

It’s a good practice to calculate your TI score weekly or bi-weekly to monitor your performance and quickly identify any negative trends before they impact your seller account health.

7. Does a high return rate affect my TI score?

Directly, no. The TI score focuses on outbound logistics. However, the reasons for high returns (e.g., slow shipping) are often linked to a poor TI score, so there is an indirect correlation.

8. Where can I find the data for this calculator?

You can find data on total orders and late shipments within your Amazon Seller Central account under the “Performance” -> “Account Health” -> “Shipping Performance” section. Handling and transit times may need to be calculated from your own order records or shipping software.