Most Common Letters in English: Top 10 Frequencies + Wordle Stats

If you’ve ever wondered why your opponent always seems to guess the same letters first in Wordle, the answer lives in a quiet hierarchy most of us never think about: the alphabet itself has a popularity contest going on. E wins by a landslide, appearing roughly 11–12% of the time across English texts, while Z barely registers at 0.07%.

Most common letter: E (11.16%) · 2nd most common: A (8.50%) · 3rd most common: R (7.58%) · Rarest letter: Z (0.07%) · Wordle top 5 starter letters: S, L, E, R, A

Across academic analyses, dictionary counts, and game-specific datasets, the same letters keep claiming the top spots—but the exact order shifts depending on how you measure.

What’s the Most Common Letter Used in English?

Three independent sources—Cornell University’s cryptography lecture notes (40,000-word sample), Reader’s Digest’s analysis of the Concise Oxford English Dictionary, and Dictionary.com’s corpus work—all put E at the top. The exact percentage varies slightly by source: Cornell found E at 12.02%, while the dictionary analysis put it at 11.16%. The gap comes from methodology differences—one measures letters within words, the other counts how many dictionary entries contain each letter. Cornell’s mathematics department (cryptography education) uses raw frequency across texts; Reader’s Digest (editorial analysis) counted 240,000 dictionary entries.

E’s dominance extends to keyboard usage—it’s the most-struck letter and ranks second only to the space bar. That ubiquity isn’t accidental; it’s baked into how English evolved phonetically and how word endings cluster.

Frequency data from English texts

The cryptographic ordering known as ETAOIN SHRDLU—derived from the most common letters in 1930s Linotype keyboards—has guided codebreakers for decades. That ordering remains broadly valid: E and T consistently rank 1-2 across all datasets, and the top 10 letters (E, T, A, O, I, N, S, R, H, L, D, C) show remarkably stable rankings across sources. Dictionary.com’s analysis (language reference publication) places the 15th letter as U at roughly 2.8%—confirming that beyond the top 14 letters, frequencies drop into single-digit territory.

Comparison across sources

When you line up Cornell (academic corpus), RD.com (dictionary entries), and Dictionary.com (language platform), the top 5 stays consistent: E, T, A, O, I—or E, A, R, I, O depending on ranking criteria. The order shifts slightly between “frequency by appearance” and “number of words containing the letter,” but E never leaves the top spot.

What are the top 10 most commonly used letters?

Across sources, the top 10 most common letters in English form a remarkably stable hierarchy. Reader’s Digest’s analysis of the Concise Oxford English Dictionary (language reference publication) gives precise percentages:

• 1. E — 11.16%
• 2. A — 8.50%
• 3. R — 7.58%
• 4. I — 7.54%
• 5. O — 7.16%
• 6. T — 6.95%
• 7. N — 6.65%
• 8. S — 5.74%
• 9. L — 5.49%
• 10. C — 4.54%

Cornell University’s 40,000-word sample (cryptography education source) shows slightly different percentages—E at 12.02%, T at 9.10%, A at 8.12%—because it measures raw character frequency in running text rather than dictionary entry coverage. Dictionary.com (language reference platform) lists the order as E, T, A, O, I, N, S, R, H, L, D, C, M, F, U for the full top 15.

Ranked list with percentages

The slight ordering differences between sources boil down to one question: Are you measuring how often a letter appears in text, or how many dictionary words contain it? E leads both metrics, but T vs. A trades places depending on methodology. For practical applications—word games, password strength analysis, crossword solving—the Cornell text-frequency data tends to be more useful.

“The 10 most common letter pairs in English are: TH, HE, AN, IN, ER, ON, RE, ED, ND, HA.” — Dictionary.com

What this means: if you’re solving a cryptogram or playing a word game, betting on TH, HE, or AN as starting combinations pays off more often than not.

What are the 5 most common letters in Wordle?

Wordle operates on a specific dictionary of 2,315 target words—and that constraint creates a frequency distribution distinct from general English. Real Statistics Using Excel (statistical analysis platform) analyzed all 2,315 words to find: E dominates with 1,233 appearances, followed by A, R, O, T, L, I, S, N, and C.

The interesting wrinkle: The Why Axis (independent analysis) found that E is slightly under-represented in Wordle relative to general English, while letters like B, Y, and G appear more often in solutions than their general frequency would predict. The Wordle dictionary simply doesn’t mirror everyday text.

5-letter word frequencies

Position matters enormously in Wordle. Art of Problem Solving (educational platform) found that S opens over 15% of Wordle words—far more than any other starting letter. Only C, B, T, P, A, and F crack 5% as first letters. Meanwhile, A dominates the second and third positions, and E owns the fourth and fifth slots, appearing as the fourth letter in 1 in 7 Wordle answers.

“Over 15% of Wordle words of the day start with S.” — Art of Problem Solving

The pattern: Wordle’s answer pool skews toward words that feel common but have specific positional quirks. Starting words like slice, tried, and crane—recommended by WGBH (public media outlet)—hit these high-frequency positions directly.

Real stats from Excel analyses

Dr. Drang’s analysis on Leancrew (technical blog) of approximately 8,500 five-letter words found frequencies of A at 10.5%, E at 10.0%, R at 7.2%, O at 6.6%, and I at 6.1%. The convergence with Wordle data is striking: the game inherits five-letter word patterns from the broader corpus.

What is the rarest letter in English?

Z is the undisputed heavyweight champion of rarity. Dictionary.com (language reference platform) puts Z at just 0.07% of all letter occurrences, with Q close behind at 0.10%, J at 0.15%, and X at 0.40%. In practical terms, you might encounter Z once every 1,400 characters—roughly every 250 words on average.

This scarcity makes Z and Q potent tools in word games. In Wordle, the tiny pool of Z/Q words (zaffer, quaff, quiz, etc.) can suddenly appear, and players who’ve eliminated those letters from consideration face a nasty surprise. Reader’s Digest notes that E appears in roughly 6,000 more words than A—the runner-up—which means A is to E what Z is to the rest of the alphabet: present but rare.

Least frequent letters ranked

The bottom five (Z, Q, J, X, K) cluster below 0.8% combined. K sits at 0.77%—still less than 1%—but appears in 66 words in the Wordle dictionary, making it more useful in the game than its frequency suggests. The paradox: rarity in general English doesn’t always translate to rarity in specific word lists.

The implication: if you’re writing a crossword clue, Z and Q deserve high point values. If you’re playing Wordle, never assume Z or Q are impossible—even if they’re rare overall, the game specifically chose words that make elimination tricky.

What are the most common letters in 5 letter words?

Five-letter words follow distinct patterns that differ from general English. Dr. Drang’s analysis (technical blog) of 8,500 five-letter words found A at 10.5%, E at 10.0%, R at 7.2%, O at 6.6%, I at 6.1%, and S, T, L each at 5.6%. The big shift: S and T become proportionally stronger in five-letter contexts, while E’s dominance softens.

This matters for Wordle because the game only uses five-letter words. Real Statistics Using Excel (statistical analysis platform) found that 39.3% of Wordle answers contain A—the single highest word-inclusion rate for any letter in the game.

Bigrams and patterns

Dictionary.com’s top 10 letter pairs (TH, HE, AN, IN, ER, ON, RE, ED, ND, HA) show how consonants and vowels cluster. In five-letter words specifically, patterns like -TION, -ED, -ING, -ERE, -ATE dominate because they combine a high-frequency bigram with a high-frequency ending.

Double letters also concentrate in five-letter words: EE, LL, and SS appear far more often than their general frequency would suggest because five-letter constraints force phonetic compression. Words like “creep,” “grass,” and “still” exploit these clusters.

Double letters like EE, LL

Double letters in five-letter words follow predictable rules: they almost never appear at word boundaries (not at positions 1+5 or 2+5), and they concentrate in middle positions where phonetic stress falls. EE typically lands in positions 3-4, LL in positions 2-3, and SS in positions 2-3 or 3-4. The pattern: doubles cluster where the word’s stress lands.

The practical upshot: when you see a double letter confirmed in Wordle, you can often deduce its position range immediately. An SS in a five-letter word almost certainly sits at 2-3 or 3-4, leaving narrow options for the remaining letters.

Related reading: European Country Crossword Clue: Answers by Letter Count · What Is an Adjective – Definition, Examples, Types & Usage

Frequently asked questions

For Wordle players and word-game enthusiasts, the data is clear: E dominates, S starts strong, and position matters more than overall frequency once you’re past the opening guess. General English frequency gives you a starting map, but Wordle-specific data—where E is actually under-represented compared to A’s inclusion rate—gives you the edge you need to solve in four guesses or fewer.