RFID Code Converter

Converter tool between SGTIN-96 (RFID Hex) and Barcode (GTIN) + Serial Number. Compatible with standard RFID readers like Zebra, Chainway, Impinj, Nextwaves. Based on GS1 EPC Tag Data Standard.

RFID Converter

Code Logic & Step-by-Step

// 1. Binary Conversion

src = bin(0x) // = "?"

// 2. Extract Fields (Bit Slice)

header = src[0:8] → "00110000" → "?" (?)
filter = src[8:11] → "..." → ?
partition = src[11:14] → "..." → ?

// 3. Determine Partition Rule (Partition ?)

rule = PARTITIONS[?]
// Company Bits: ?, Item Bits: ?

// 4. Extract Company & Item

company = src[14:14] → "..." → ?
itemRef = src[14:14] → "..." → ?
serial = src[14:96] → "..." → ?

Developer Code

Use this utility logic in your project. Select a language below.

1// TypeScript / JavaScript SGTIN-96 Utils
2
3export const GS1_PARTITION_TABLE = [
4  { value: 0, partition: 0, companyPrefixBits: 40, itemReferenceBits: 4, companyDigits: 12, itemDigits: 1 },
5  { value: 1, partition: 1, companyPrefixBits: 37, itemReferenceBits: 7, companyDigits: 11, itemDigits: 2 },
6  { value: 2, partition: 2, companyPrefixBits: 34, itemReferenceBits: 10, companyDigits: 10, itemDigits: 3 },
7  { value: 3, partition: 3, companyPrefixBits: 30, itemReferenceBits: 14, companyDigits: 9, itemDigits: 4 },
8  { value: 4, partition: 4, companyPrefixBits: 27, itemReferenceBits: 17, companyDigits: 8, itemDigits: 5 },
9  { value: 5, partition: 5, companyPrefixBits: 24, itemReferenceBits: 20, companyDigits: 7, itemDigits: 6 },
10  { value: 6, partition: 6, companyPrefixBits: 20, itemReferenceBits: 24, companyDigits: 6, itemDigits: 7 },
11];
12
13export function encodeSgtin96(gtin: string, serial: string, filter: number) {
14  gtin = gtin.padStart(14, "0");
15  const p = GS1_PARTITION_TABLE.find(rule => {
16    const cp = parseInt(gtin.slice(1, 1 + rule.companyDigits));
17    const ir = parseInt(gtin[0] + gtin.slice(1 + rule.companyDigits, 13));
18    return cp < (1 << rule.companyPrefixBits) && ir < (1 << rule.itemReferenceBits);
19  });
20  if (!p) throw new Error("Invalid GTIN for SGTIN-96");
21
22  const cpVal = parseInt(gtin.slice(1, 1 + p.companyDigits));
23  const irVal = parseInt(gtin[0] + gtin.slice(1 + p.companyDigits, 13));
24  
25  let b = (0x30).toString(2).padStart(8,"0");
26  b += filter.toString(2).padStart(3,"0");
27  b += p.partition.toString(2).padStart(3,"0");
28  b += cpVal.toString(2).padStart(p.companyPrefixBits,"0");
29  b += irVal.toString(2).padStart(p.itemReferenceBits,"0");
30  b += parseInt(serial).toString(2).padStart(38,"0");
31  return binaryToHex(b);
32}
33
34export function decodeSgtin96(hex: string) {
35  const b = hexToBinary(hex);
36  const pVal = parseInt(b.substring(11, 14), 2);
37  const rule = GS1_PARTITION_TABLE.find(r => r.partition === pVal);
38  if (!rule) throw new Error("Invalid Partition");
39
40  const cp = parseInt(b.substring(14, 14 + rule.companyPrefixBits), 2);
41  const ir = parseInt(b.substring(14 + rule.companyPrefixBits, 14 + rule.companyPrefixBits + rule.itemReferenceBits), 2);
42  const serial = parseInt(b.substring(14 + rule.companyPrefixBits + rule.itemReferenceBits, 96), 2);
43
44  const cpStr = cp.toString().padStart(rule.companyDigits, "0");
45  const irStr = ir.toString().padStart(rule.itemDigits, "0");
46  const gtinCore = irStr[0] + cpStr + irStr.substring(1);
47
48  // Check digit calculation
49  let sum = 0;
50  for (let i = 0; i < 13; i++) {
51    sum += parseInt(gtinCore[i]) * (i % 2 === 0 ? 3 : 1);
52  }
53  const check = (10 - (sum % 10)) % 10;
54  
55  return {
56    gtin: gtinCore + check,
57    serial: serial.toString()
58  };
59}
60
61function binaryToHex(b: string) {
62  let hex = "";
63  for (let i = 0; i < b.length; i += 4) {
64    hex += parseInt(b.substring(i, i + 4), 2).toString(16).toUpperCase();
65  }
66  return hex;
67}
68
69function hexToBinary(h: string) {
70  let bin = "";
71  for (let i = 0; i < h.length; i++) {
72    bin += parseInt(h[i], 16).toString(2).padStart(4, "0");
73  }
74  return bin;
75}

Explain

Understanding SGTIN & GTIN

Visualizing the relationship between your physical barcode and the electronic product code (EPC).

Diagram showing connection between Barcode (GTIN) and SGTIN-96 URI

SGTIN-96 is a 96-bit binary string divided into 6 parts:

HDR
FLT
PRT
COMPANY
ITEM
SERIAL (38)

Detailed Analysis (Bit by Bit)

Header (8 bit)Bits 0-8 (8)
00110000

Standard prefix (00110000) identifying this as SGTIN-96.

Filter (3 bit)Bits 8-11 (3)
...

Object type (e.g. 1 = Retail Retail). See Reference Guide below.

Partition (3 bit)Bits 11-14 (3)
...

Partition X means: Company Code takes Y bits, Product Code takes Z bits.

Company PrefixBits 14-0 (0)
...

Unique company code assigned by GS1.

Item ReferenceBits 0-0 (0)
...

Your specific product code.

Serial Number (38 bit)Bits 0-96 (38)
...

Unique identifier for each specific physical product.

Encoding Logic (Step-by-Step)

  1. Step 1: Determine the binary header value for the EPC schema. The binary header value for SGTIN-96 is “00110000.”
  2. Step 2: Select the Partition Value based on the number of digits in the Company Prefix from the Partition Value Table.
  3. Step 3: Convert the Filter Value, Partition Value, Company Prefix, Item Reference, and Serial # to binary value.
  4. Step 4: Concatenate in order Header, Filter, Partition, Company Prefix, Item Reference, and Serial # binary values to form the Binary EPC.

SGTIN-96 Reference Guide

FFilter Values (3 bits)

ValueDescription
0
All Others
Used for items that do not fit other categories. Rarely used in general retail.
1
Point of Sale (POS) Trade Item
The standard consumer unit sold at Point of Sale. Example: A single bottle of shampoo.
2
Full Case for Transport
A standard shipping unit containing multiple items. Example: A carton of 12 shampoo bottles. Critical for logistics to distinguish 'one case' from 'one item'.
3
Reserved
Reserved for future use.
4
Inner Pack Trade Item Grouping
A grouping smaller than a full case, often for shelf display or handling. Example: A shrink-wrapped 3-pack inside the main carton.
5
Reserved
Reserved for future use.
6
Unit Load
A large logistical unit, typically a pallet containing multiple cases.
7
Component inside Consumer Unit
A specific part inside a consumer unit. Example: The battery cover inside a toy.

PPartition Table (3 bits)

Value
Company Prefix
(Bits / Digits)
Item Reference
(Bits / Digits)
040 / 124 / 1
137 / 117 / 2
234 / 1010 / 3
330 / 914 / 4
427 / 817 / 5
524 / 720 / 6
620 / 624 / 7

SGTIN-96 Frequently Asked Questions