Learn / Typing mechanics
Why some keyboard keys are harder to type
A key is one button on your keyboard, such as a, 4, or Shift. PeakTock's fixed US-QWERTY model gives more time to longer reaches and to some finger assignments. This lets the short test compare keys with one consistent rule. It does not measure the physical effort in your hand.
1. Why some keys are harder
Where your fingers start
When you get ready to type, your fingers usually rest on the middle letter row. Your left fingers sit over a, s, d, and f. Your right fingers sit over j, k, l, and ;. Typists call this the home row.
A key on the home row needs little movement. A key above or below it makes your finger travel. The number row is farther away again.
Your fingers normally rest on a, s, d, f, j, k, l, and ;.
Why the finger matters
Standard touch typing assigns each key to a finger. PeakTock uses the index finger as its model baseline at 1. The model gives the middle, ring, and pinky fingers progressively more time. These are fixed test values, not measurements of your hand.
Index finger: R, T, Y, U, F, G, H, J, V, B, N, M. Middle finger: E, I, D, K, C. Ring finger: W, O, S, L, X. Pinky finger: Q, P, A, Z.
Each letter is assigned to the finger that normally reaches its position.
| Finger | Value | Example key | Why |
|---|---|---|---|
| Index | 1 | f | PeakTock baseline |
| Middle | 1.06 | d | |
| Ring | 1.18 | s | gets additional time in this model |
| Pinky | 1.4 | a | gets the most finger allowance in this model |
Why the keyboard row matters
A row is one horizontal line of keys. The home row has a value of 1 because your fingers already rest there. The other rows get higher values as your fingers move farther away.
Top row: Q, W, E, R, T, Y, U, I, O, P. Home row: A, S, D, F, G, H, J, K, L. Bottom row: Z, X, C, V, B, N, M.
Keys get more time as the finger moves farther from its resting position.
| Row | Value | Example key | Why |
|---|---|---|---|
| Home | 1 | f | where the fingers rest |
| Top | 1.07 | r | |
| Bottom | 1.13 | v | gets a higher allowance than the top row |
| Number | 1.2 | 4 | gets the highest row allowance |
PeakTock gives the bottom row more time than the top row (1.13 against 1.07). This is a fixed model choice, not a universal rule about physical movement.
2. How PeakTock accounts for key difficulty
Why harder keys get more time
Imagine that you type f and p at the same speed. f sits under your left index finger on the home row. To reach p, your right pinky moves to the top row. PeakTock's fixed model gives that finger-and-row combination more time.
The extra time is based on a difficulty score. A score of 1 is the starting point. A higher score means the key gets more time. It does not mean that you are bad at typing that key.
How the final difficulty is calculated
PeakTock combines the value for the finger with the value for the keyboard row. If you must hold Shift at the same time, it also applies a 1.25× adjustment.
key difficulty = finger value × row value × Shift adjustment
PeakTock uses the same rules for every person because a short test does not contain enough typing to learn what is normal for each person.
Why the Mac app uses a different method
A short test uses one fixed difficulty value for each key on a US-QWERTY keyboard. The Mac app has more time to learn from your own typing, so it uses your personal speed, accuracy, and consistency instead.
3. Examples from the keyboard
Comparing a and t
a is on the home row, so its row value is 1. You type it with your left pinky, which has a finger value of 1.4. Its final difficulty is 1.4.
t is on the top row, which has a value of 1.07. You type it with your index finger, which has a value of 1. Its final difficulty is 1.07.
Pinky × home rowDifficulty 1.4
Index × top rowDifficulty 1.07
a gets about 1.31× as much time as t.
So a is allowed roughly 1.31× the time of t. If you type both at the same speed, PeakTock treats your result on a as stronger because the current model gives a a higher allowance.
Shift works in the same way. Lowercase p scores 1.498. Capital P also requires Shift, so it scores 1.873.
The easiest and hardest letters
Easiest, all scoring 1: f, g, h, j. Each one sits on the home row and uses an index finger.
Hardest, scoring 1.582: z. It is away from the home row and uses a pinky.
4. What the model cannot measure
This score looks at one key at a time. It does not include every factor that can make a word or key sequence difficult:
- Same-finger sequences. The score does not include the transition between two letters on one finger.
- Hand alternation. The score does not include whether two keys use different hands.
- Pair direction. The score does not include sideways movement or a change in direction inside a two-key combination.
- Your hands and keyboard. Hand size, keyboard shape, switch weight, and injuries can all affect how a key feels.
- Other keyboard layouts. The page covers US-QWERTY. Key positions differ on Colemak, Dvorak, AZERTY, and QWERTZ.
- How often you use a letter. The score measures difficulty, not how much a key affects your typing overall.
This is a model of the keyboard, not a model of you. It applies the same fixed allowances to every test. It does not decide what you should practise first.
5. Common questions
Is a higher difficulty score bad?
No. The score describes the keyboard key, not the person typing it. A key with a difficulty of 1.582 gets more time than a key with a difficulty of 1 before PeakTock calls it slow.
Why does PeakTock give the pinky more time?
This is a choice in PeakTock's fixed US-QWERTY model. It gives the pinky a value of 1.4, compared with 1 for the index finger. This value is not a judgment about your hand.
Where do these numbers come from?
These values come from the difficulty model used by PeakTock's browser typing test. They change only when the model changes.
Does the difficulty model account for my keyboard layout?
The model currently assumes US-QWERTY, the common English layout with Q, W, E, R, T, and Y across the top letter row. Other layouts place letters in different positions, so these values do not yet apply to Colemak, Dvorak, AZERTY, or QWERTZ.
See it applied to your own typing
Type for 60 seconds. PeakTock scores every key you hit against this model and shows which keys are slower after the model allowance is applied.
Take the typing test