diff --git a/CHANGELOG.md b/CHANGELOG.md
index 317ec4f..8b5a114 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.5.0](https://github.com/tediousjs/connection-string/compare/v0.4.4...v0.5.0) (2023-08-09)
+
+
+### Features
+
+* add connection string builder ([369a63f](https://github.com/tediousjs/connection-string/commit/369a63f03f263d81f576fb9f38afd80cf3b95f96))
+
 ## [0.4.4](https://github.com/tediousjs/connection-string/compare/v0.4.3...v0.4.4) (2023-08-02)
 
 
diff --git a/package-lock.json b/package-lock.json
index 4ad94c1..8cebdf4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
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@@ -1616,6 +1603,20 @@
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@@ -1624,6 +1625,12 @@
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@@ -2594,6 +2585,16 @@
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+      "dev": true,
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@@ -2624,14 +2625,6 @@
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@@ -3438,6 +3428,17 @@
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@@ -4050,6 +4051,12 @@
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@@ -4294,6 +4335,68 @@
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-          "dev": true,
           "requires": {
             "ansi-regex": "^5.0.1"
           }
         },
         "strip-ansi-cjs": {
-          "version": "npm:strip-ansi@6.0.1",
+          "version": "npm:strip-ansi-cjs@6.0.1",
           "bundled": true,
-          "dev": true,
           "requires": {
             "ansi-regex": "^5.0.1"
           }
@@ -6218,9 +6311,8 @@
           }
         },
         "wrap-ansi-cjs": {
-          "version": "npm:wrap-ansi@7.0.0",
+          "version": "npm:wrap-ansi-cjs@7.0.0",
           "bundled": true,
-          "dev": true,
           "requires": {
             "ansi-styles": "^4.0.0",
             "string-width": "^4.1.0",
@@ -6303,6 +6395,15 @@
             "wrap-ansi": "^6.2.0"
           }
         },
+        "p-map": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/p-map/-/p-map-3.0.0.tgz",
+          "integrity": "sha512-d3qXVTF/s+W+CdJ5A29wywV2n8CQQYahlgz2bFiA+4eVNJbHJodPZ+/gXwPGh0bOqA+j8S+6+ckmvLGPk1QpxQ==",
+          "dev": true,
+          "requires": {
+            "aggregate-error": "^3.0.0"
+          }
+        },
         "wrap-ansi": {
           "version": "6.2.0",
           "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-6.2.0.tgz",
@@ -6396,6 +6497,39 @@
       "dev": true,
       "requires": {
         "p-map": "^5.1.0"
+      }
+    },
+    "p-is-promise": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/p-is-promise/-/p-is-promise-3.0.0.tgz",
+      "integrity": "sha512-Wo8VsW4IRQSKVXsJCn7TomUaVtyfjVDn3nUP7kE967BQk0CwFpdbZs0X0uk5sW9mkBa9eNM7hCMaG93WUAwxYQ==",
+      "dev": true
+    },
+    "p-limit": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.3.0.tgz",
+      "integrity": "sha512-//88mFWSJx8lxCzwdAABTJL2MyWB12+eIY7MDL2SqLmAkeKU9qxRvWuSyTjm3FUmpBEMuFfckAIqEaVGUDxb6w==",
+      "dev": true,
+      "requires": {
+        "p-try": "^2.0.0"
+      }
+    },
+    "p-locate": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-4.1.0.tgz",
+      "integrity": "sha512-R79ZZ/0wAxKGu3oYMlz8jy/kbhsNrS7SKZ7PxEHBgJ5+F2mtFW2fK2cOtBh1cHYkQsbzFV7I+EoRKe6Yt0oK7A==",
+      "dev": true,
+      "requires": {
+        "p-limit": "^2.2.0"
+      }
+    },
+    "p-map": {
+      "version": "5.5.0",
+      "resolved": "https://registry.npmjs.org/p-map/-/p-map-5.5.0.tgz",
+      "integrity": "sha512-VFqfGDHlx87K66yZrNdI4YGtD70IRyd+zSvgks6mzHPRNkoKy+9EKP4SFC77/vTTQYmRmti7dvqC+m5jBrBAcg==",
+      "dev": true,
+      "requires": {
+        "aggregate-error": "^4.0.0"
       },
       "dependencies": {
         "aggregate-error": {
@@ -6428,51 +6562,9 @@
           "resolved": "https://registry.npmjs.org/indent-string/-/indent-string-5.0.0.tgz",
           "integrity": "sha512-m6FAo/spmsW2Ab2fU35JTYwtOKa2yAwXSwgjSv1TJzh4Mh7mC3lzAOVLBprb72XsTrgkEIsl7YrFNAiDiRhIGg==",
           "dev": true
-        },
-        "p-map": {
-          "version": "5.5.0",
-          "resolved": "https://registry.npmjs.org/p-map/-/p-map-5.5.0.tgz",
-          "integrity": "sha512-VFqfGDHlx87K66yZrNdI4YGtD70IRyd+zSvgks6mzHPRNkoKy+9EKP4SFC77/vTTQYmRmti7dvqC+m5jBrBAcg==",
-          "dev": true,
-          "requires": {
-            "aggregate-error": "^4.0.0"
-          }
         }
       }
     },
-    "p-is-promise": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/p-is-promise/-/p-is-promise-3.0.0.tgz",
-      "integrity": "sha512-Wo8VsW4IRQSKVXsJCn7TomUaVtyfjVDn3nUP7kE967BQk0CwFpdbZs0X0uk5sW9mkBa9eNM7hCMaG93WUAwxYQ==",
-      "dev": true
-    },
-    "p-limit": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.3.0.tgz",
-      "integrity": "sha512-//88mFWSJx8lxCzwdAABTJL2MyWB12+eIY7MDL2SqLmAkeKU9qxRvWuSyTjm3FUmpBEMuFfckAIqEaVGUDxb6w==",
-      "dev": true,
-      "requires": {
-        "p-try": "^2.0.0"
-      }
-    },
-    "p-locate": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-4.1.0.tgz",
-      "integrity": "sha512-R79ZZ/0wAxKGu3oYMlz8jy/kbhsNrS7SKZ7PxEHBgJ5+F2mtFW2fK2cOtBh1cHYkQsbzFV7I+EoRKe6Yt0oK7A==",
-      "dev": true,
-      "requires": {
-        "p-limit": "^2.2.0"
-      }
-    },
-    "p-map": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/p-map/-/p-map-3.0.0.tgz",
-      "integrity": "sha512-d3qXVTF/s+W+CdJ5A29wywV2n8CQQYahlgz2bFiA+4eVNJbHJodPZ+/gXwPGh0bOqA+j8S+6+ckmvLGPk1QpxQ==",
-      "dev": true,
-      "requires": {
-        "aggregate-error": "^3.0.0"
-      }
-    },
     "p-reduce": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/p-reduce/-/p-reduce-2.1.0.tgz",
@@ -6712,14 +6804,6 @@
         "ini": "~1.3.0",
         "minimist": "^1.2.0",
         "strip-json-comments": "~2.0.1"
-      },
-      "dependencies": {
-        "strip-json-comments": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
-          "integrity": "sha512-4gB8na07fecVVkOI6Rs4e7T6NOTki5EmL7TUduTs6bu3EdnSycntVJ4re8kgZA+wx9IueI2Y11bfbgwtzuE0KQ==",
-          "dev": true
-        }
       }
     },
     "read-pkg": {
@@ -7325,9 +7409,9 @@
       }
     },
     "slash": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz",
-      "integrity": "sha512-g9Q1haeby36OSStwb4ntCGGGaKsaVSjQ68fBxoQcutl5fS1vuY18H3wSt3jFyFtrkx+Kz0V1G85A4MyAdDMi2Q==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/slash/-/slash-4.0.0.tgz",
+      "integrity": "sha512-3dOsAHXXUkQTpOYcoAxLIorMTp4gIQr5IW3iVb7A7lFIp0VHhnynm9izx6TssdrIcVIESAlVjtnO2K8bg+Coew==",
       "dev": true
     },
     "source-map": {
@@ -7505,9 +7589,9 @@
       }
     },
     "strip-json-comments": {
-      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-3.1.1.tgz",
-      "integrity": "sha512-6fPc+R4ihwqP6N/aIv2f1gMH8lOVtWQHoqC4yK6oSDVVocumAsfCqjkXnqiYMhmMwS/mEHLp7Vehlt3ql6lEig==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
+      "integrity": "sha512-4gB8na07fecVVkOI6Rs4e7T6NOTki5EmL7TUduTs6bu3EdnSycntVJ4re8kgZA+wx9IueI2Y11bfbgwtzuE0KQ==",
       "dev": true
     },
     "supports-color": {
diff --git a/package.json b/package.json
index 29233c3..d175cff 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tediousjs/connection-string",
-  "version": "0.4.4",
+  "version": "0.5.0",
   "description": "SQL ConnectionString parser",
   "repository": {
     "type": "git",
@@ -45,7 +45,7 @@
     "@semantic-release/release-notes-generator": "^11.0.4",
     "@tsconfig/node10": "^1.0.8",
     "@types/chai": "^4.3.1",
-    "@types/mocha": "^9.1.1",
+    "@types/mocha": "^10.0.1",
     "@types/node": "^10.17.60",
     "@typescript-eslint/eslint-plugin": "^6.2.1",
     "@typescript-eslint/parser": "^6.2.1",
diff --git a/src/builder/index.ts b/src/builder/index.ts
new file mode 100644
index 0000000..1bb9c23
--- /dev/null
+++ b/src/builder/index.ts
@@ -0,0 +1,49 @@
+type ValidDataTypes = string | boolean | number | null | undefined | { toString(): string };
+
+function isQuoted(val: string): boolean {
+    if (val[0] !== '{') {
+        return false;
+    }
+    for (let i = 1; i < val.length; i++) {
+        if (val[i] === '}') {
+            if (i + 1 === val.length) {
+                // if last char, then it's quoted properly
+                return true;
+            } else if (val[i + 1] !== '}') {
+                // the next char is no a `}` so there is no valid escaping here
+                return false;
+            } else {
+                // we are seeing an escaped `}`, so skip ahead
+                i++;
+            }
+        }
+    }
+    return false;
+}
+
+function needsQuotes(val: string): boolean {
+    return !isQuoted(val) && !!val.match(/\[|]|{|}|\|\(|\)|,|;|\?|\*|=|!|@/)?.length;
+}
+
+function encodeTuple(key: string, value: ValidDataTypes): [string, string] {
+    if (value === null || value === undefined) {
+        return [key, ''];
+    }
+    switch (typeof value) {
+        case 'boolean':
+            return [key, value ? 'Yes' : 'No'];
+        default: {
+            const strVal = (value as { toString(): string }).toString();
+            if (needsQuotes(strVal)) {
+                return [key, `{${strVal.replace(/}/g, '}}')}}`];
+            }
+            return [key, strVal];
+        }
+    }
+}
+
+export function buildConnectionString(data: Record<string, ValidDataTypes>): string {
+    return Object.entries(data).map(([key, value]) => {
+        return encodeTuple(key.trim(), value).join('=');
+    }).join(';');
+}
diff --git a/src/index.ts b/src/index.ts
index cf40537..7365372 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,6 +1,8 @@
 import parseConnectionString from './parser/connection-string';
 import parseSqlConnectionString from './parser/sql-connection-string';
 
+export * from './builder';
+
 export {
     parseConnectionString,
     parseSqlConnectionString,
diff --git a/test/builder/connection-string.ts b/test/builder/connection-string.ts
new file mode 100644
index 0000000..dd012be
--- /dev/null
+++ b/test/builder/connection-string.ts
@@ -0,0 +1,21 @@
+import { buildConnectionString } from '../../src/builder';
+import { expect } from 'chai';
+
+describe('builder', () => {
+    it('builds a connection string', () => {
+        const built = buildConnectionString({
+            strkey: 'value',
+            booltrue: true,
+            boolfalse: false,
+            numkey: 123,
+            needsquote: 'a}test',
+            quotedquote: '{quoted}}value}',
+            quoted: '{regular value}',
+            badlyquoted: '{no closing quote',
+            badclose: '{close}early',
+            nullkey: null,
+            undefinedkey: undefined,
+        });
+        expect(built).to.equal('strkey=value;booltrue=Yes;boolfalse=No;numkey=123;needsquote={a}}test};quotedquote={quoted}}value};quoted={regular value};badlyquoted={{no closing quote};badclose={{close}}early};nullkey=;undefinedkey=');
+    });
+});