diff --git a/packages/csv-stringify/dist/cjs/index.cjs b/packages/csv-stringify/dist/cjs/index.cjs
index 59356991..d4769eef 100644
--- a/packages/csv-stringify/dist/cjs/index.cjs
+++ b/packages/csv-stringify/dist/cjs/index.cjs
@@ -475,8 +475,21 @@ const stringifier = function(options, state, info){
             }
           });
           quotedMatch = quotedMatch && quotedMatch.length > 0;
-          if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-            value = `'${value}`;
+          if (escape_formulas) {
+            switch (value[0]) {
+            case '=':
+            case '+':
+            case '-':
+            case '@':
+            case '\t':
+            case '\r':
+            case '\uFF1D': // Unicode '='
+            case '\uFF0B': // Unicode '+'
+            case '\uFF0D': // Unicode '-'
+            case '\uFF20': // Unicode '@'
+              value = `'${value}`;
+              break;
+            }
           }
           const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
           if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv-stringify/dist/cjs/sync.cjs b/packages/csv-stringify/dist/cjs/sync.cjs
index 1978e275..a0d83508 100644
--- a/packages/csv-stringify/dist/cjs/sync.cjs
+++ b/packages/csv-stringify/dist/cjs/sync.cjs
@@ -473,8 +473,21 @@ const stringifier = function(options, state, info){
             }
           });
           quotedMatch = quotedMatch && quotedMatch.length > 0;
-          if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-            value = `'${value}`;
+          if (escape_formulas) {
+            switch (value[0]) {
+            case '=':
+            case '+':
+            case '-':
+            case '@':
+            case '\t':
+            case '\r':
+            case '\uFF1D': // Unicode '='
+            case '\uFF0B': // Unicode '+'
+            case '\uFF0D': // Unicode '-'
+            case '\uFF20': // Unicode '@'
+              value = `'${value}`;
+              break;
+            }
           }
           const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
           if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv-stringify/dist/esm/index.js b/packages/csv-stringify/dist/esm/index.js
index fb0be81c..96ca7942 100644
--- a/packages/csv-stringify/dist/esm/index.js
+++ b/packages/csv-stringify/dist/esm/index.js
@@ -5533,8 +5533,21 @@ const stringifier = function(options, state, info){
             }
           });
           quotedMatch = quotedMatch && quotedMatch.length > 0;
-          if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-            value = `'${value}`;
+          if (escape_formulas) {
+            switch (value[0]) {
+            case '=':
+            case '+':
+            case '-':
+            case '@':
+            case '\t':
+            case '\r':
+            case '\uFF1D': // Unicode '='
+            case '\uFF0B': // Unicode '+'
+            case '\uFF0D': // Unicode '-'
+            case '\uFF20': // Unicode '@'
+              value = `'${value}`;
+              break;
+            }
           }
           const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
           if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv-stringify/dist/esm/sync.js b/packages/csv-stringify/dist/esm/sync.js
index 3954e705..a0f795c7 100644
--- a/packages/csv-stringify/dist/esm/sync.js
+++ b/packages/csv-stringify/dist/esm/sync.js
@@ -2443,8 +2443,21 @@ const stringifier = function(options, state, info){
             }
           });
           quotedMatch = quotedMatch && quotedMatch.length > 0;
-          if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-            value = `'${value}`;
+          if (escape_formulas) {
+            switch (value[0]) {
+            case '=':
+            case '+':
+            case '-':
+            case '@':
+            case '\t':
+            case '\r':
+            case '\uFF1D': // Unicode '='
+            case '\uFF0B': // Unicode '+'
+            case '\uFF0D': // Unicode '-'
+            case '\uFF20': // Unicode '@'
+              value = `'${value}`;
+              break;
+            }
           }
           const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
           if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv-stringify/dist/iife/index.js b/packages/csv-stringify/dist/iife/index.js
index daad9dcb..6dc014fb 100644
--- a/packages/csv-stringify/dist/iife/index.js
+++ b/packages/csv-stringify/dist/iife/index.js
@@ -5536,8 +5536,21 @@ var csv_stringify = (function (exports) {
               }
             });
             quotedMatch = quotedMatch && quotedMatch.length > 0;
-            if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-              value = `'${value}`;
+            if (escape_formulas) {
+              switch (value[0]) {
+              case '=':
+              case '+':
+              case '-':
+              case '@':
+              case '\t':
+              case '\r':
+              case '\uFF1D': // Unicode '='
+              case '\uFF0B': // Unicode '+'
+              case '\uFF0D': // Unicode '-'
+              case '\uFF20': // Unicode '@'
+                value = `'${value}`;
+                break;
+              }
             }
             const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
             if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv-stringify/dist/iife/sync.js b/packages/csv-stringify/dist/iife/sync.js
index a36da0d9..5d261a4d 100644
--- a/packages/csv-stringify/dist/iife/sync.js
+++ b/packages/csv-stringify/dist/iife/sync.js
@@ -2446,8 +2446,21 @@ var csv_stringify_sync = (function (exports) {
                         }
                       });
                       quotedMatch = quotedMatch && quotedMatch.length > 0;
-                      if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-                        value = `'${value}`;
+                      if (escape_formulas) {
+                        switch (value[0]) {
+                        case '=':
+                        case '+':
+                        case '-':
+                        case '@':
+                        case '\t':
+                        case '\r':
+                        case '\uFF1D': // Unicode '='
+                        case '\uFF0B': // Unicode '+'
+                        case '\uFF0D': // Unicode '-'
+                        case '\uFF20': // Unicode '@'
+                          value = `'${value}`;
+                          break;
+                        }
                       }
                       const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
                       if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv-stringify/dist/umd/index.js b/packages/csv-stringify/dist/umd/index.js
index efed7e3b..c0693f95 100644
--- a/packages/csv-stringify/dist/umd/index.js
+++ b/packages/csv-stringify/dist/umd/index.js
@@ -5539,8 +5539,21 @@
               }
             });
             quotedMatch = quotedMatch && quotedMatch.length > 0;
-            if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-              value = `'${value}`;
+            if (escape_formulas) {
+              switch (value[0]) {
+              case '=':
+              case '+':
+              case '-':
+              case '@':
+              case '\t':
+              case '\r':
+              case '\uFF1D': // Unicode '='
+              case '\uFF0B': // Unicode '+'
+              case '\uFF0D': // Unicode '-'
+              case '\uFF20': // Unicode '@'
+                value = `'${value}`;
+                break;
+              }
             }
             const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
             if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv-stringify/dist/umd/sync.js b/packages/csv-stringify/dist/umd/sync.js
index c995979e..a617683a 100644
--- a/packages/csv-stringify/dist/umd/sync.js
+++ b/packages/csv-stringify/dist/umd/sync.js
@@ -2449,8 +2449,21 @@
                         }
                       });
                       quotedMatch = quotedMatch && quotedMatch.length > 0;
-                      if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-                        value = `'${value}`;
+                      if (escape_formulas) {
+                        switch (value[0]) {
+                        case '=':
+                        case '+':
+                        case '-':
+                        case '@':
+                        case '\t':
+                        case '\r':
+                        case '\uFF1D': // Unicode '='
+                        case '\uFF0B': // Unicode '+'
+                        case '\uFF0D': // Unicode '-'
+                        case '\uFF20': // Unicode '@'
+                          value = `'${value}`;
+                          break;
+                        }
                       }
                       const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
                       if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv-stringify/lib/api/index.js b/packages/csv-stringify/lib/api/index.js
index fa9d5664..80c9f36b 100644
--- a/packages/csv-stringify/lib/api/index.js
+++ b/packages/csv-stringify/lib/api/index.js
@@ -158,8 +158,21 @@ const stringifier = function(options, state, info){
             }
           });
           quotedMatch = quotedMatch && quotedMatch.length > 0;
-          if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-            value = `'${value}`;
+          if (escape_formulas) {
+            switch (value[0]) {
+            case '=':
+            case '+':
+            case '-':
+            case '@':
+            case '\t':
+            case '\r':
+            case '\uFF1D': // Unicode '='
+            case '\uFF0B': // Unicode '+'
+            case '\uFF0D': // Unicode '-'
+            case '\uFF20': // Unicode '@'
+              value = `'${value}`;
+              break;
+            }
           }
           const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
           if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv-stringify/test/option.escape_formulas.coffee b/packages/csv-stringify/test/option.escape_formulas.coffee
index f7058f3b..fd606031 100644
--- a/packages/csv-stringify/test/option.escape_formulas.coffee
+++ b/packages/csv-stringify/test/option.escape_formulas.coffee
@@ -19,7 +19,7 @@ describe 'Option `escape_formulas`', ->
       code: 'CSV_OPTION_ESCAPE_FORMULAS_INVALID_TYPE'
       message: 'option `escape_formulas` must be a boolean, got "invalid"'
 
-  it 'escape =, +, -, @, \\t, \\r signs', (next) ->
+  it 'escape =, +, -, @, \\t, \\r and unicode equivalent signs', (next) ->
     stringify [
       [ '=a',1]
       [ '+b',2]
@@ -28,6 +28,11 @@ describe 'Option `escape_formulas`', ->
       [ '\te',5]
       [ '\rf',6]
       [ 'g',7]
+      [ '\uFF1Dh',8]
+      [ '\uFF0Bi',9]
+      [ '\uFF0Dj',10]
+      [ '\uFF20k',11]
+      [ '\uFF0Cl',12] # \uFF0C is 'full width comma' and should not be escaped
     ], escape_formulas: true, eof: false, (err, data) ->
       return next err if err
       data.should.eql """
@@ -38,6 +43,11 @@ describe 'Option `escape_formulas`', ->
       '\te,5
       '\rf,6
       g,7
+      '\uFF1Dh,8
+      '\uFF0Bi,9
+      '\uFF0Dj,10
+      '\uFF20k,11
+      \uFF0Cl,12
       """
       next()
 
diff --git a/packages/csv/dist/cjs/index.cjs b/packages/csv/dist/cjs/index.cjs
index 8dbf7e0e..54b6d0f0 100644
--- a/packages/csv/dist/cjs/index.cjs
+++ b/packages/csv/dist/cjs/index.cjs
@@ -2271,8 +2271,21 @@ const stringifier = function(options, state, info){
             }
           });
           quotedMatch = quotedMatch && quotedMatch.length > 0;
-          if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-            value = `'${value}`;
+          if (escape_formulas) {
+            switch (value[0]) {
+            case '=':
+            case '+':
+            case '-':
+            case '@':
+            case '\t':
+            case '\r':
+            case '\uFF1D': // Unicode '='
+            case '\uFF0B': // Unicode '+'
+            case '\uFF0D': // Unicode '-'
+            case '\uFF20': // Unicode '@'
+              value = `'${value}`;
+              break;
+            }
           }
           const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
           if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv/dist/cjs/sync.cjs b/packages/csv/dist/cjs/sync.cjs
index ab358cf4..01772180 100644
--- a/packages/csv/dist/cjs/sync.cjs
+++ b/packages/csv/dist/cjs/sync.cjs
@@ -2048,8 +2048,21 @@ const stringifier = function(options, state, info){
             }
           });
           quotedMatch = quotedMatch && quotedMatch.length > 0;
-          if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-            value = `'${value}`;
+          if (escape_formulas) {
+            switch (value[0]) {
+            case '=':
+            case '+':
+            case '-':
+            case '@':
+            case '\t':
+            case '\r':
+            case '\uFF1D': // Unicode '='
+            case '\uFF0B': // Unicode '+'
+            case '\uFF0D': // Unicode '-'
+            case '\uFF20': // Unicode '@'
+              value = `'${value}`;
+              break;
+            }
           }
           const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
           if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv/dist/esm/index.js b/packages/csv/dist/esm/index.js
index 865ba570..e0d52851 100644
--- a/packages/csv/dist/esm/index.js
+++ b/packages/csv/dist/esm/index.js
@@ -7398,8 +7398,21 @@ const stringifier = function(options, state, info){
             }
           });
           quotedMatch = quotedMatch && quotedMatch.length > 0;
-          if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-            value = `'${value}`;
+          if (escape_formulas) {
+            switch (value[0]) {
+            case '=':
+            case '+':
+            case '-':
+            case '@':
+            case '\t':
+            case '\r':
+            case '\uFF1D': // Unicode '='
+            case '\uFF0B': // Unicode '+'
+            case '\uFF0D': // Unicode '-'
+            case '\uFF20': // Unicode '@'
+              value = `'${value}`;
+              break;
+            }
           }
           const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
           if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv/dist/esm/sync.js b/packages/csv/dist/esm/sync.js
index f36c4bf1..863d443a 100644
--- a/packages/csv/dist/esm/sync.js
+++ b/packages/csv/dist/esm/sync.js
@@ -7175,8 +7175,21 @@ const stringifier = function(options, state, info){
             }
           });
           quotedMatch = quotedMatch && quotedMatch.length > 0;
-          if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-            value = `'${value}`;
+          if (escape_formulas) {
+            switch (value[0]) {
+            case '=':
+            case '+':
+            case '-':
+            case '@':
+            case '\t':
+            case '\r':
+            case '\uFF1D': // Unicode '='
+            case '\uFF0B': // Unicode '+'
+            case '\uFF0D': // Unicode '-'
+            case '\uFF20': // Unicode '@'
+              value = `'${value}`;
+              break;
+            }
           }
           const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
           if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv/dist/iife/index.js b/packages/csv/dist/iife/index.js
index 8579af30..d4a39ff3 100644
--- a/packages/csv/dist/iife/index.js
+++ b/packages/csv/dist/iife/index.js
@@ -7401,8 +7401,21 @@ var csv = (function (exports) {
                         }
                       });
                       quotedMatch = quotedMatch && quotedMatch.length > 0;
-                      if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-                        value = `'${value}`;
+                      if (escape_formulas) {
+                        switch (value[0]) {
+                        case '=':
+                        case '+':
+                        case '-':
+                        case '@':
+                        case '\t':
+                        case '\r':
+                        case '\uFF1D': // Unicode '='
+                        case '\uFF0B': // Unicode '+'
+                        case '\uFF0D': // Unicode '-'
+                        case '\uFF20': // Unicode '@'
+                          value = `'${value}`;
+                          break;
+                        }
                       }
                       const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
                       if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv/dist/iife/sync.js b/packages/csv/dist/iife/sync.js
index 5718c67f..e19d3fd6 100644
--- a/packages/csv/dist/iife/sync.js
+++ b/packages/csv/dist/iife/sync.js
@@ -7178,8 +7178,21 @@ var csv_sync = (function (exports) {
                         }
                       });
                       quotedMatch = quotedMatch && quotedMatch.length > 0;
-                      if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-                        value = `'${value}`;
+                      if (escape_formulas) {
+                        switch (value[0]) {
+                        case '=':
+                        case '+':
+                        case '-':
+                        case '@':
+                        case '\t':
+                        case '\r':
+                        case '\uFF1D': // Unicode '='
+                        case '\uFF0B': // Unicode '+'
+                        case '\uFF0D': // Unicode '-'
+                        case '\uFF20': // Unicode '@'
+                          value = `'${value}`;
+                          break;
+                        }
                       }
                       const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
                       if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv/dist/umd/index.js b/packages/csv/dist/umd/index.js
index 841c7e67..856e10fb 100644
--- a/packages/csv/dist/umd/index.js
+++ b/packages/csv/dist/umd/index.js
@@ -7404,8 +7404,21 @@
                         }
                       });
                       quotedMatch = quotedMatch && quotedMatch.length > 0;
-                      if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-                        value = `'${value}`;
+                      if (escape_formulas) {
+                        switch (value[0]) {
+                        case '=':
+                        case '+':
+                        case '-':
+                        case '@':
+                        case '\t':
+                        case '\r':
+                        case '\uFF1D': // Unicode '='
+                        case '\uFF0B': // Unicode '+'
+                        case '\uFF0D': // Unicode '-'
+                        case '\uFF20': // Unicode '@'
+                          value = `'${value}`;
+                          break;
+                        }
                       }
                       const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
                       if(shouldQuote === true && containsEscape === true){
diff --git a/packages/csv/dist/umd/sync.js b/packages/csv/dist/umd/sync.js
index 51b9584d..9a4ba5db 100644
--- a/packages/csv/dist/umd/sync.js
+++ b/packages/csv/dist/umd/sync.js
@@ -7181,8 +7181,21 @@
                         }
                       });
                       quotedMatch = quotedMatch && quotedMatch.length > 0;
-                      if (escape_formulas && ['=', '+', '-', '@', '\t', '\r'].includes(value[0])) {
-                        value = `'${value}`;
+                      if (escape_formulas) {
+                        switch (value[0]) {
+                        case '=':
+                        case '+':
+                        case '-':
+                        case '@':
+                        case '\t':
+                        case '\r':
+                        case '\uFF1D': // Unicode '='
+                        case '\uFF0B': // Unicode '+'
+                        case '\uFF0D': // Unicode '-'
+                        case '\uFF20': // Unicode '@'
+                          value = `'${value}`;
+                          break;
+                        }
                       }
                       const shouldQuote = containsQuote === true || containsdelimiter || containsRecordDelimiter || quoted || quotedString || quotedMatch;
                       if(shouldQuote === true && containsEscape === true){