| Book |
Movie |
| Hagrid refers to Sirius Black | Hagrid does not refer to Sirius Black |
| Petunia is blonde | Petunia is not blonde |
| Dudley is blonde | Dudley is not blonde |
| Dudley received 37 presents | Dudley received 36 presents |
| Piers joins Dudley to the zoo | Character deleted |
| Boa constrictor is from Bolivia | Boa constrictor is from Burma |
| Dudley leaps back when glass vanishes | Dudley falls over into the terrarium |
| There's a bill in a brown envelope | There's no brown envelope |
| Hagrid can use magic to deliver letters | Flocks of owls deliver letters |
| They check into a hotel | Scene deleted |
| Hagrid tells Harry of You-Know-Who | Mr. Ollivander tells Harry of You-Know-Who |
| Hagrid doesn't want to repeat the name Voldemort | Hagrid has no trouble saying Voldemort twice |
| The number of Harry's safe is not mentioned | The number of Harry's safe is 687 |
| Harry meets Draco at Madame Malkin's and on the train | Harry meets Draco at Hogwart's |
| Nothing happens when Harry waves wrong wands | Harry makes a mess with wrong wands |
| Between birthday and Sept. 1, Harry stays with the Dursley's | Scene deleted |
| Vernon Dursley brings Harry to King's Cross Station | Hagrid takes Harry to King's Cross Station |
| Chocolate frogs are not real frogs | Chocolate frogs are enchanted to jump once |
| The hint about Nicholas Flamel is given on the train | The hint about Nicholas Flamel is not given on the train |
| Sorting ceremony is in alphabetical order | Sorting ceremony is not in alphabetical order |
| Sorting hat sings and whispers in Harry's ear | Sorting hat does not sing and speaks his opinion out loud |
| Students are warned for Peeves | Character deleted |
| Simon asks "How can you be nearly headless?" | Hermione asks "How can you be nearly headless?" |
| Draco challenges Harry to a midnight duel | Scene deleted |
| Hermione is put in danger by Harry and Ron | Troll finds his way to Hermione without help |
| Troll is a hint for final scene | Follow up on troll scene deleted |
| Quidditch practice at 7, too dark for the snitch | Quidditch practice during daylight, snitch taken out |
| McGoonagall forbids to open the package at the table | McGoonagall smiles when the package is opened at the table |
| There are no girls on the Slytherin team | There are girls on the Slytherin team |
| Hermione makes blue flames to break Snape's spell | Hermione uses normal fire to break Snape's spell |
| Harry gets a flute which he will need later on | Harry does not get a flute |
| Cloak is fluid and silvery white | One side of the cloak is visible |
| Harry goes invisible 3 nights in a row | Harry goes invisible on 2 separate nights |
| Hagrid takes care of Norbert for 3 weeks | Hagrid takes care of Norbert for 1 day |
| Neville Longbottom is punished for being out of bed | Neville Longbottom is not out of bed, so not punished |
| Shame comes over Harry, Hermione and Neville | Other students do not react on losing 150 points |
| Harry rides Firenze to safety | Hagrid takes Harry back to safety |
| Hermione never spoke the name of Voldemort | Hermione speaks the name of Voldemort |
| Ron shivers hearing the name of Voldemort | Ron does not notice the name Voldemort is mentioned |
| A normal harp is used by the thief | An enchanted harp is used by the thief |
| Harry goes first through the hatch | All three jump through the hatch |
| Hermione uses blue flames again against Devil's Snare | Hermione uses sunlight against Devil's Snare |
| It takes 3 to corner the winged key | There is only broom to catch the winged key |
| Snape made one of the spells to protect the stone, like Hagrid said |
Snape did not make one of the spells to protect the stone, which Hagrid claimed |
| The man with two faces burns when he touches Harry |
The man with two faces pulverizes when he touches Harry |
| Voldemort leaves the man with two faces to die |
Harry kills the man with two faces |
| Dumbledore finds out in the hospital wing that Harry knows about Nicholas Flamel |
Dumbledore knows in the hospital wing that Harry knows about Nicholas Flamel |
| Dumbledore gives Harry the hint about what death is | Dumbledore does not discuss death with Harry |
| Dumbledore advices Harry to use the name Voldemort | Dumbledore does not tell Harry to use the name Voldemort |
| Harry asks why Voldemort wants to kill him | Harry never asks anyone why Voldemort wants to kill the Potters |
| Dumbledore tells Harry why Snape hates him | Harry is not told about Snape's motives |
| Dumbledore tells Harry who sent him the cloack | It is not revealed who sent Harry the cloak |
