# First Attempt Delivery Rate Calculator

> Calculate your first attempt delivery rate (FADR), the shipments that needed another try and what those re-attempts cost.

Category: Logistics & transport · Applies to: Worldwide · Last updated: 2026-10-29
Interactive calculator: https://calculators.geekmidst.com/calculators/first-attempt-delivery-rate-calculator

First attempt delivery rate is shipments delivered on the first try divided by shipments that had a first attempt. Each failure costs a re-delivery, a return or a customer contact.

Also called: FADR calculator, Delivery success rate calculator.

## Inputs
- Shipments with a first attempt (default 12000)
- Delivered on the first attempt (default 10920)
- Cost per failed first attempt (default 4.50; optional)
- Currency

## Results
- First attempt delivery rate
- Shipments needing another attempt
- First attempt failure rate
- Cost of failed first attempts

## Formula

```
FADR = Delivered first time ÷ Shipments with a first attempt × 100;  Failed = Attempted − Delivered first time;  Cost = Failed × Cost per failure
```

Where:
- Shipments with a first attempt: out-for-delivery shipments that reached a first attempt in the period (excludes ones never dispatched)

## Worked example
1. FADR = 10,920 ÷ 12,000 × 100 = 91%.
2. Failed first attempts = 12,000 − 10,920 = 1,080.
3. Cost = 1,080 × 4.50 = 4,860.

**Result:** A 91% first attempt rate means 1,080 shipments needed another try, costing about 4,860.

## What the result means

Every point of FADR gained removes a re-attempt for 1% of volume. Track the reasons for failure (not home, wrong address, access) to target the fix: delivery windows, address validation or safe-place options.

## Assumptions and limits
- Each failed shipment costs the same amount.
- Definitions vary between carriers; keep the same denominator over time when comparing periods.

## Questions

### Should customer-requested reschedules count as failures?

Decide once and be consistent. Many operators exclude customer-requested changes made before the first attempt.

### Is FADR the same as on-time delivery?

No. A parcel can be delivered on the first attempt but late, or on time on the second attempt.

## Related calculators
- [Route ETA Estimate Calculator](https://calculators.geekmidst.com/calculators/route-eta-estimate-calculator)
- [Parcel Sorting Throughput Calculator](https://calculators.geekmidst.com/calculators/parcel-sorting-throughput-calculator)
- [Percentage Calculator](https://calculators.geekmidst.com/calculators/percentage-calculator)

Source: GM¹X CalcVerse — https://calculators.geekmidst.com/calculators/first-attempt-delivery-rate-calculator