Seo & Web Tools Calculators
SEO and web utilities for word count, character count, reading time, and JSON formatting.
3 calculators
Content work is full of tiny counts that gatekeep publication — a meta description must stay under 160 characters, a tweet under 280, an article must read in under five minutes, and a JSON payload must be valid before it hits an API. The SEO & Web tools on this page answer those limits instantly, in your browser, with no account and no upload. Paste your text, hit enter, and the number you need is there.
The Word Counter counts words, characters (with and without spaces), sentences, and paragraphs as you type, with a live total so you can trim or expand on the fly. The Character Counter is the same engine focused on the character count — ideal for meta descriptions, ad copy, SMS, and any platform with a hard character ceiling. The Reading Time Calculator takes your word count and divides by the standard 200 words per minute to give a minutes-and-seconds estimate, so you can label a blog post "5 min read" without guessing. The JSON Formatter takes messy or minified JSON, parses it, and pretty-prints it with consistent indentation — or minifies it to a single line if that is what the API needs. If the input is not valid JSON, it tells you exactly what went wrong and shows nothing, so a successful output is also a validation pass. All four tools run entirely in your browser; nothing you paste is uploaded, stored, or logged.
Pick the tool that matches the constraint you are up against. If you are writing a meta description, the Character Counter keeps you under the limit. If you are writing a blog post, the Word Counter shows the running total and the Reading Time Calculator gives you the "X min read" label. If you are debugging an API response, the JSON Formatter both cleans it up and proves it is valid. Every tool runs client-side — nothing you paste is uploaded, saved on a server, or shared. You can paste tokens, payloads, or private copy without it leaving your device, and the tools are free with no sign-up.
Accuracy is built on the simplest possible math: words are split on whitespace, characters are counted literally, sentences end at `.`, `?`, or `!` followed by a space or end-of-string, paragraphs are separated by blank lines, and reading time uses the standard 200 words-per-minute average. JSON parsing uses the browser's native parser, which follows the RFC 8259 spec exactly. The tools do not guess — they count and parse. If your content has unusual formatting (code blocks, tables, quoted text with internal punctuation), the counts are still deterministic; they just may not match a human's intuition, so run the text through the tool as the final check before you publish.
Frequently asked questions
Does the word counter count words inside code blocks or markdown?
Yes. The counter splits on whitespace, so anything separated by spaces, tabs, or newlines is a word — including code tokens. If you need a "prose only" count, strip code blocks and markup first.
What reading speed does the reading time calculator assume?
200 words per minute, the standard average for silent adult reading. The result is an estimate; actual reading speed varies with text complexity, reader fluency, and whether the text is skimmed or read deeply.
Does the JSON formatter change my data?
No. Formatting only changes whitespace — it pretty-prints with a consistent two-space indent or minifies to a single line. The actual values in your JSON are never altered. If the input is not valid JSON, the formatter reports the error and shows nothing, so a successful output also confirms the data is valid.
Can I use these tools for SEO meta tags and social posts?
Yes. The character counter is ideal for meta descriptions (160 chars), title tags (60 chars), tweets (280 chars), and LinkedIn posts (3000 chars). The word counter helps you hit article length targets, and the reading time calculator gives you the "X min read" label for blog posts.
Is my text uploaded or stored?
No. Every tool on this page runs entirely in your browser. Your inputs — text, JSON, or anything else — stay on your device and are never uploaded, saved on a server, or shared. You can use them freely without creating an account.