The correct plural of potato is potatoes, never potatos. When a noun ends in a consonant plus o, standard English adds -es to the end, which is why potatoes, tomatoes and heroes all share that extra letter in their plurals.
Key Takeaways
- Potatoes is the only standard plural of potato; potatos is a misspelling.
- A noun ending in a consonant plus o usually forms its plural with -es.
- Shortened words like photos and borrowed words like pianos take only -s.
- The same pattern covers tomatoes, heroes and echoes.
- Say the plural as three syllables: poh-TAY-toes.
Is potatos correct?
No. In standard English, potatos is always a misspelling of the plural of potato.
The right form is potatoes. That single letter e separates a careful writer from a careless typo, and every major spellchecker flags potatos on sight. The dictionary evidence is clear: Merriam-Webster’s dictionary entry for potato uses the plural potatoes in its example sentences, with no variant spelling listed. So when you need the plural, commit to the -es ending without hesitation.
Why is the plural potatoes and not potatos?
The letter right before the final o decides the ending. In potato, the t is a consonant, so the plural adds -es: potato becomes potatoes.
The same logic explains tomatoes, heroes and echoes. Grammar teaching follows this pattern exactly: the Basic Reading and Writing course from QuillBot states that most words ending in o take -es, as in tomato → tomatoes and hero → heroes, while words of foreign origin such as piano and photo take only -s. That gives you a working test: ask whether the word is an old everyday noun or a borrowing or abbreviation, and the ending usually follows.
Older everyday words lean toward -es because the extra letter gave the plural its own full syllable as the word settled into English. The result is a word with three clear beats instead of a clipped ending.
Which -o words take -es and which take only -s?
Use -es for consonant + o words like potatoes, tomatoes and heroes. Use -s for vowel + o words like radios, and for the exceptions: musical or borrowed words such as pianos, and shortened words such as photos.
| Singular | Plural | Pattern |
|---|---|---|
| potato | potatoes | consonant + o → -es |
| tomato | tomatoes | consonant + o → -es |
| hero | heroes | consonant + o → -es |
| echo | echoes | consonant + o → -es |
| piano | pianos | musical borrowing → -s |
| photo | photos | shortened from photograph → -s |
| kilo | kilos | borrowed abbreviation → -s |
| radio | radios | vowel + o → -s |
| studio | studios | vowel + o → -s |
| zoo | zoos | vowel + o → -s |
The three mistakes below show up most often, and each has a one-step fix:
- Wrong: “We need five potatos for the stew.” Right: “We need five potatoes for the stew.”
- Wrong: “The heros arrived at noon.” Right: “The heroes arrived at noon.”
- Wrong: “She printed the photoes for the album.” Right: “She printed the photos for the album.”
Notice the third fix runs the opposite way: photo is short for photograph, so it takes only -s, never -es.
How can you remember the -es rule?
Run every -o word through a short three-step check before you finalize the spelling.
- Look at the letter before the final o. If it is a consonant, your default is -es.
- Ask whether the word is a shortened form (photo, auto) or a foreign borrowing or musical term (piano, solo, kilo). If yes, use -s.
- When still unsure, check a dictionary and write the correct plural down once. The right form sticks fast after that.
This word shows up most in kitchens and grocery runs. Lists, recipe cards and pantry labels all need the plural form at some point, and getting it right keeps your writing sharp. If you enjoy practical home and kitchen guides, Activemyhouse covers everyday topics just like this one.
Not every -o word picks a side, and this is where the rule genuinely breaks down. Dictionaries accept both mangoes and mangos, volcanoes and volcanos, zeroes and zeros. When two spellings are both standard, pick one and use it consistently through the whole document. Mixing both spellings looks sloppier than either choice on its own.
Frequently Asked Questions
Is potatos ever acceptable in formal writing?
No — no standard dictionary recognizes potatos as a correct spelling. You will not find it listed as a variant in major dictionaries. Treat it as a typo in every context, from text messages to term papers.
Why do so many people write potatos?
Most writers default to adding a single -s because that is how the majority of English plurals work. The -es ending for -o words is a smaller pattern, so it gets forgotten under time pressure. Learning the consonant-plus-o test once removes the guesswork.
Is it potatoe or potatoes?
The plural is potatoes; potatoe is a misspelling. A famous slip shows how easy the mistake is: in 1992, the sitting vice president changed a schoolchild’s correct potato to the misspelling potatoe during a classroom visit, an incident widely reported at the time, according to the Creators Syndicate column on -o plurals. If a sitting vice president could add the wrong letter, nobody should feel embarrassed about double-checking.
Do all words ending in o add -es?
No — words like pianos, photos and radios take only -s. Borrowed musical terms, shortened forms and words with a vowel before the o skip the extra e. The -es ending belongs to everyday nouns like potatoes, tomatoes and heroes.
How do you use potatoes in a sentence?
Use it like any regular plural noun: “We roasted the potatoes with rosemary.” It also works as an attributive noun, as in “potato salad” — singular form — even when the dish contains many potatoes.
Conclusion
Remember the simple test: a consonant plus o means -es, and potatoes proves it every time. Type potatos and the typo undermines an otherwise solid sentence; type potatoes and the word disappears into good writing, which is exactly what correct spelling should do.