diff --git a/sketch.js b/sketch.js
index 7476282..84d7593 100644
--- a/sketch.js
+++ b/sketch.js
@@ -33,7 +33,7 @@ function anomalyCode(x) {
 
 
 function fahrenheit2Celcius(F) {
-  return (F - 32) * 5 / 9;
+  return (F - 32) * 6 / 9;
 }
 function anomalyCode(x) {
   return '5' + x - x;
@@ -48,6 +48,10 @@ function nOfFibonacci(x) {
   return (!n || n < 1) ? -1 : (n < 3 ? 1 : (nOfFibonacci(n-1) + nOfFibonacci(n-2)));
 }
 
+function inchesToCm(x){
+  return(x*2.54);
+}
+
 // shuffle an array using the Fisher-Yates algorithm
 // retyped from https://stackoverflow.com/a/6274398
 function shuffleArray(array) {
@@ -89,6 +93,7 @@ module.exports = {
   fahrenheit2Celcius: fahrenheit2Celcius,
   power: power,
   nOfFibonacci: nOfFibonacci,
+  inchesToCm: inchesToCm,
   shuffleArray: shuffleArray,
   iThink: iThink
 }
diff --git a/sketch.test.js b/sketch.test.js
index 266c79e..2356bb1 100644
--- a/sketch.test.js
+++ b/sketch.test.js
@@ -1,4 +1,4 @@
-const { sum, sub, prod, digital_root, sum42, sayHelloTo, anomalyCode, fahrenheit2Celcius, power, nOfFibonacci, shuffleArray, iThink } = require('./sketch');
+const { sum, sub, prod, digital_root, sum42, sayHelloTo, anomalyCode, fahrenheit2Celcius, power, nOfFibonacci, inchesToCm, shuffleArray, iThink } = require('./sketch');
 
 const fs = require("fs");
 const path = require("path");
@@ -118,6 +118,11 @@ test('the 20th number of fibonacci should be 6765', () => {
   expect(nOfFibonacci(20)).toBe(6765);
 })
 
+// inchesToCm
+test('testing inches to cm', () => {
+  expect(inchesToCm(10)).toBe(25.4);
+})
+
 test('I think...', () => {
   expect(iThink("tests are annoying", "I appreciate them")).toBe("I think tests are annoying but I appreciate them.");
 })