diff --git a/README.md b/README.md
index 08177af..42df95e 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,7 @@ npm install --save 4devs
 # Navigation
 
 - [CPF](#cpf)
+- [RG](#rg)
 - [Certificates](#certificates)
 
 # Docs:
@@ -61,25 +62,49 @@ return:
 }
 ```
 
-### generate a new CPF
+## RG:
+
+RG is one of the classes that 4devs has, this class is able to generate and validate a rg based on the services on the pages [https://www.4devs.com.br/gerador_de_cpf](https://www.4devs.com.br/gerador_de_rg) and [https://www.4devs.com.br/validador_rg](https://www.4devs.com.br/validador_rg)
+
+### validate a RG
 
 ```ts
-import { CPF } from '4devs';
+import { RG } from '4devs';
+
+const { isValid } = await RG.validate({ rg: '30.737.817-2' });
+```
+
+parameters:
+
+- `rg` (required) the RG you want to validate
+
+return:
+
+```ts
+{
+  isValid: boolean;
+}
+```
+
+### generate a new RG
+
+```ts
+import { RG } from '4devs';
 
-const { cpf } = await CPF.generate({ isWithDots: true, stateCode: 'BA' });
+const { rg } = await RG.generate({ isWithDots: true, stateCode: 'BA' });
 ```
 
 parameters:
 
-- `isWithDots` (optional) if true the CPF will be generated with dots example: 218.61.715-34 if not generated without example: 60778779564
+- `isWithDots` (optional) if true the RG will be generated with dots example: 30.737.817-2 if not generated without example: 60.778.777-0
 
-- `stateCode` (optional) code of the state where the CPF belongs, example: "BA" or "SP"
+- `stateCode` (optional) code of the state where the RG belongs, example: "BA" or "SP"
 
 return:
 
 ```ts
 {
-  cpf: string;
+  rg: string;
 }
 ```
 
diff --git a/__test__/RG.test.ts b/__test__/RG.test.ts
new file mode 100644
index 0000000..7fc3064
--- /dev/null
+++ b/__test__/RG.test.ts
@@ -0,0 +1,43 @@
+import { RG } from '../lib/index';
+
+interface IRG {
+  rg: string;
+  isValid: boolean;
+}
+
+const rgMock: IRG = {
+  rg: '30.737.817-2',
+  isValid: true,
+};
+
+describe('RG lib', () => {
+  it('should create an instance', () => {
+    expect(new RG()).toBeTruthy();
+  });
+
+  it('should be valid RG', async () => {
+    const RGIsValid = await RG.validate({ rg: rgMock.rg });
+
+    expect(RGIsValid.isValid).toBe(rgMock.isValid);
+  });
+
+  it('should generate a RG with dots', async () => {
+    const { rg } = await RG.generate({ isWithDots: true });
+
+    expect(rg).toHaveLength(12);
+  });
+
+  it('should generate a RG without dots', async () => {
+    const { rg } = await RG.generate({ isWithDots: false });
+
+    expect(rg).toHaveLength(9);
+
+    
+  });
+
+  it('should generate a RG with state', async () => {
+    const { rg } = await RG.generate({ stateCode: 'BA' });
+
+    expect(rg).toHaveLength(9);
+  });
+});
diff --git a/examples/index.js b/examples/index.js
index ddcb590..a48775b 100644
--- a/examples/index.js
+++ b/examples/index.js
@@ -1,21 +1,31 @@
-const { Certificates, CPF } = require('../dist');
+const { Certificates, CPF, RG } = require('../dist');
 
 (async () => {
   {
     // CPF
     const { cpf } = await CPF.generate({ isWithDots: true, stateCode: 'BA' }); // 34317074087
 
-    console.log(cpf);
+    console.log('CPF: ',cpf);
 
     const { isValid } = await CPF.validate({ cpf });
 
     console.log(isValid);
   }
+  {
+    // RG
+    const { rg } = await RG.generate({ isWithDots: true, stateCode: 'BA' }); // 34317074087
+
+    console.log('RG: ',rg);
+
+    const { isValid } = await RG.validate({ rg });
+
+    console.log(isValid);
+  }
   {
     // Certificates
     const { certificate } = await Certificates.generate();
 
-    console.log(certificate);
+    console.log('certificate: ', certificate);
 
     const { isValid } = await Certificates.validate({ certificate });
 
diff --git a/lib/index.ts b/lib/index.ts
index 6acda92..71c8cc5 100644
--- a/lib/index.ts
+++ b/lib/index.ts
@@ -1,5 +1,6 @@
 import { Certificates } from './modules/Certificates';
 import { CPF } from './modules/CPF';
 import { CNH } from './modules/CNH';
+import { RG } from './modules/RG';
 
-export { Certificates, CPF, CNH };
+export { Certificates, CPF, CNH, RG };
diff --git a/lib/interfaces/IRG.ts b/lib/interfaces/IRG.ts
new file mode 100644
index 0000000..d86c4f6
--- /dev/null
+++ b/lib/interfaces/IRG.ts
@@ -0,0 +1,8 @@
+export interface IRGValid {
+    isValid: boolean;
+  }
+  
+  export interface IRGGenerated {
+    rg: string;
+  }
+  
\ No newline at end of file
diff --git a/lib/modules/RG/GenerateRG.ts b/lib/modules/RG/GenerateRG.ts
new file mode 100644
index 0000000..61c0a48
--- /dev/null
+++ b/lib/modules/RG/GenerateRG.ts
@@ -0,0 +1,26 @@
+import { RequestUtil } from '../../utils/RequestUtil';
+import { IRGGenerated } from '../../interfaces/IRG';
+
+export class GenerateRG {
+  requestUtil = new RequestUtil();
+  async execute({
+    isWithDots,
+    stateCode,
+  }: {
+    isWithDots?: boolean;
+    stateCode?: string;
+  }): Promise<IRGGenerated> {
+    const { data: rg }: { data: string } = await this.requestUtil.post({
+      path: '/ferramentas_online.php',
+      json: {
+        acao: 'gerar_rg',
+        pontuacao: isWithDots ? 'S' : 'N',
+        rg_estado: stateCode || '',
+      },
+    });
+
+    return {
+      rg,
+    };
+  }
+}
diff --git a/lib/modules/RG/ValidateRG.ts b/lib/modules/RG/ValidateRG.ts
new file mode 100644
index 0000000..a14774d
--- /dev/null
+++ b/lib/modules/RG/ValidateRG.ts
@@ -0,0 +1,20 @@
+import { RequestUtil } from '../../utils/RequestUtil';
+import { IRGValid } from '../../interfaces/IRG';
+
+export class ValidateRG {
+  requestUtil = new RequestUtil();
+  async execute({ rg }: { rg: string }): Promise<IRGValid> {
+    const { data }: { data: string } = await this.requestUtil.post({
+      path: '/ferramentas_online.php',
+      json: {
+        acao: 'validar_rg',
+        txt_rg: rg,
+      },
+    });
+    const isValid = data.toLowerCase().includes('verdadeiro');
+
+    return {
+      isValid,
+    };
+  }
+}
diff --git a/lib/modules/RG/index.ts b/lib/modules/RG/index.ts
new file mode 100644
index 0000000..960b099
--- /dev/null
+++ b/lib/modules/RG/index.ts
@@ -0,0 +1,19 @@
+import { ValidateRG } from './ValidateRG';
+import { GenerateRG } from './GenerateRG';
+
+import { IRGValid } from '../../interfaces/IRG';
+import { IRGGenerated } from '../../interfaces/IRG';
+
+export class RG {
+  public static async validate({ rg }: { rg: string }): Promise<IRGValid> {
+    const validateRG = new ValidateRG();
+    return await validateRG.execute({ rg });
+  }
+  public static async generate(options?: {
+    isWithDots?: boolean;
+    stateCode?: string;
+  }): Promise<IRGGenerated> {
+    const generateRG = new GenerateRG();
+    return await generateRG.execute(options ? options : {});
+  }
+}