On-Time Delivery Rate Calculator
Calculate on-time delivery (OTD) and OTIF rates, the late share, and how many on-time deliveries in a row you need to reach your target.
On-time delivery (OTD) rate is the share of deliveries that arrived by the promised date or inside the agreed delivery window. Shippers use it to score carriers and suppliers, and retailers often write OTD or OTIF (on time in full) targets into supplier agreements. This calculator gives the rate, the late share and the OTIF rate, and shows how far you are from a target.
How to use this tool
- Enter the total deliveries or orders in the period.
- Enter how many arrived on time under your definition.
- Optionally enter how many were both on time and complete, for OTIF.
- Enter your target rate.
Formula
On-time rate = on-time deliveries ÷ total deliveries × 100
Deliveries in a row needed = (target × total − on-time) ÷ (1 − target), rounded up
The second formula uses the target as a fraction, such as 0.98 for 98%, and answers how many consecutive on-time deliveries bring the running rate up to it. Late deliveries allowed = total × (1 − target), rounded down.
Example
A carrier made 1,250 deliveries last quarter and 1,180 were on time: 1,180 ÷ 1,250 = 94.4%, so 70 were late. A 98% target would have allowed only 25 late deliveries. To lift the running rate to 98%, the next 2,250 deliveries would all have to be on time: (1,180 + 2,250) ÷ (1,250 + 2,250) = 3,430 ÷ 3,500 = 98%.
Frequently asked questions
What counts as on time?
Whatever you agreed with the customer or carrier: the promised date, an appointment window, or a tolerance such as one day early to zero days late. Keep the same definition every period, or the trend means nothing.
What is the difference between OTD and OTIF?
OTD looks only at timing. OTIF counts a delivery as a success only if it was on time and complete, with the right items in the right quantity, so OTIF is always at or below OTD.
Why is it so hard to recover from a bad month?
Because the rate is cumulative. The closer the target is to 100%, the more perfect deliveries each late one costs: at 98%, one late delivery needs 49 on-time deliveries to balance it.
Last updated: 2026-10-30