Check individual trade item piece identifiers.
Initialising algorithm engine for ITIP Check Digit Calculator...
How ITIP Check Digit Calculator Works?
The ITIP Check Digit Calculator works by computing the GS1 check digit of the 14-digit GTIN inside the Identification of Trade Item Pieces (ITIP) and checking that the piece number does not exceed the total. The 2-digit piece and 2-digit total fields carry no check digit of their own.
- 1Enter the 13-digit GTIN payload of the complete trade item.
- 2Compute the GTIN check digit with weights 3-1-3-1 from the left.
- 3Add the 2-digit piece number (01–99).
- 4Add the 2-digit total number of pieces (01–99) and confirm piece ≤ total.
- 5Encode the 18 digits with Application Identifier (8006).
ITIP Check Digit Calculator Formula
The ITIP formula is d₁₄ = GS1 Modulus 10 check digit of the GTIN, followed by pp and tt with 1 ≤ pp ≤ tt.
d₁₄ = (10 − (Σ dᵢ·wᵢ mod 10)) mod 10 ITIP = d₁…d₁₄ + pp + tt, 01 ≤ pp ≤ tt ≤ 99
ppis the piece number.ttis the total pieces.
Payload: 0952123412345 Weights: 3131313131313 S = 77 Check digit = (10 − (77 mod 10)) mod 10 = 3 Piece 1 of 3 = (8006) 095212341234530103 Piece 2 of 3 = (8006) 095212341234530203 Piece 3 of 3 = (8006) 095212341234530303
ITIP Check Digit Calculator Conversion Table
The ITIP conversion table shows a multi-piece item split into its ITIP element strings.
| Piece | Total | GTIN-14 | ITIP (18 digits) | Valid |
|---|---|---|---|---|
| 01 | 03 | 09521234123453 | 095212341234530103 | Yes |
| 02 | 03 | 09521234123453 | 095212341234530203 | Yes |
| 03 | 03 | 09521234123453 | 095212341234530303 | Yes |
| 01 | 02 | 09521234123453 | 095212341234530102 | Yes |
| 04 | 03 | 09521234123453 | 095212341234530403 | No (piece > total) |
What is ITIP Check Digit Calculator?
An ITIP Check Digit Calculator is a tool that validates the GTIN check digit and piece fields of an Identification of Trade Item Pieces element string. ITIP identifies the separate boxes of 1 trade item, such as a wardrobe shipped in 3 cartons.
All pieces share the GTIN of the complete item, and the piece/total fields tell the receiver whether every carton has arrived.
What are the uses of ITIP Check Digit Calculator?
There are 3 main uses of the ITIP Check Digit Calculator, including furniture shipping, home delivery, and returns.
- Flat-pack furniture: Manufacturers label each carton of a multi-box item.
- Home delivery: Couriers confirm that all pieces are on the van.
- Returns handling: Warehouses verify complete returns of multi-piece items.