---
title: "Chinese Grammar Checker: Free, Fixes Each Mistake and Explains Why | Mandarin The Wild"
description: "Free Chinese grammar checker online: write a sentence in Chinese and see it corrected, each change marked, every mistake explained in plain English (word order, measure words, 了, particles), and the grammar patterns it uses. No sign-up."
canonical: "https://mandarinthewild.com/chinese-grammar-checker"
author: "Mandarin The Wild"
---

Free tool · No sign-up

# Chinese grammar checker

Write a sentence in Chinese and see each mistake fixed, and why.

## Corrected

我有两个本书，我很喜欢在家看它们在家。

## 2 fixes

两个书 → 两本书

Books take the measure word 本, not 个.

看它们在家 → 在家看它们

Where you do something (在 + place) goes before the verb, not after it.

## How does the Chinese grammar checker work?

Write or paste up to 300 characters of Chinese and press Check grammar. You get your text back corrected, each change marked, and every fix explained in plain English: the measure word, the word order, the particle or the word that was wrong, and why. Under it are the grammar patterns your corrected sentence uses, each with its own page of examples.

## How accurate is it?

It is checked by gpt-oss-120b, an open AI model, told to fix only real mistakes and keep your words. It catches the common learner errors well (word order, measure words, 了, 是 with adjectives), but it can miss a mistake or rewrite something that was fine, so read each reason and trust a teacher over it when they disagree.

## Is it free?

Yes. Without an account you can check 5 times a day; a free account checks 50 times a day.

## Where does my text go?

To our server, where Cloudflare runs the model. Neither your text nor the answer is kept, and the corrected text goes to our own parser only to find its grammar patterns.

## How is it different from the grammar finder?

The grammar finder shows which patterns a text uses and doesn’t mark mistakes. The checker fixes your mistakes first, then shows the patterns in the corrected sentence.

## More free tools

- [Chinese grammar finder](https://mandarinthewild.com/chinese-grammar): every pattern in a text
- [Measure words](https://mandarinthewild.com/measure-words)
- [Pinyin converter](https://mandarinthewild.com/pinyin-converter)
- [Chinese dictionary](https://mandarinthewild.com/chinese-dictionary)
- [How hard is this text?](https://mandarinthewild.com/text-level)

Checked on our server by gpt-oss-120b on Cloudflare, with nothing kept; grammar patterns by our own parser.