Fast, free online tools
Simple utilities that do one thing well — no signup, no clutter, and your data never leaves your browser.
Every tool runs entirely in your browser — there is no upload, no account and no waiting on a server, so results appear the instant you type. Pick a category below.
Text tools
Word Counter →
Count words, characters, sentences, reading time and check Twitter/SMS/SEO limits.
Case Converter →
UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case and more — instantly.
Lorem Ipsum Generator →
Generate placeholder text by paragraphs, sentences or words for mockups and layouts.
Slugify — URL Slug Generator →
Turn a title into a clean web address (URL slug) — lowercase, dashed, accents removed.
Text Diff Checker →
Compare two blocks of text and see exactly what was added or removed, line by line.
Word Frequency Counter →
See which words appear most often in your text, ranked by how many times each is used.
Remove Line Breaks →
Strip line breaks out of text and join it into one clean block — or tidy paragraph spacing.
Calculators
Percentage Calculator →
Find a percent of a number, what % of a total, and increase/decrease — discounts, tips, grades.
Age Calculator →
Exact age in years, months and days, total days lived, and your next-birthday countdown.
BMI Calculator →
Check if your weight is in a healthy range for your height (body mass index), metric or imperial.
Loan Calculator →
See the monthly payment and total interest on a car, home or personal loan (EMI).
Tip Calculator →
Work out the tip, the total, and split the bill evenly between any number of people.
Discount Calculator →
Find the sale price and how much you save — or the percent off from two prices.
Aspect Ratio Calculator →
Find the width-to-height ratio (like 16:9) and resize without stretching.
Compound Interest Calculator →
See how savings or investments grow over time with compound interest and regular deposits.
Sales Tax Calculator →
Add sales tax to a price or work out the tax inside a total — for any tax rate.
GPA Calculator →
Work out your grade point average (GPA) from your course grades and credit hours.
Developer tools
Base64 Encode & Decode →
Turn text into Base64 — a safe plain-text format for sending data — and back, full UTF-8 (emoji and accents included).
URL Encode & Decode →
Make text safe to put inside a web link (URL encoding) and turn it back again.
JSON Formatter →
Make messy JSON data readable, check it for errors (validate), or minify it — in your browser.
Unix Timestamp Converter →
Turn the number computers use for time (epoch) into a date and back — local time and UTC.
UUID Generator →
Create random unique IDs (UUID v4 / GUID) in bulk for databases, files and code.
Hash Generator →
Make a digital fingerprint (hash) of any text — SHA-256, SHA-1, SHA-384 and SHA-512.
JWT Decoder →
Read what is inside a JSON Web Token (JWT) — its header and payload — right in your browser.
HTML Entity Encoder & Decoder →
Turn characters like < > & into safe HTML codes (entities) and back again.
Query String Parser →
Break a URL's query string into a clean list of name and value pairs.
Converters & generators
Color Converter →
Switch a colour between the common code formats (HEX, RGB and HSL) with a live swatch and one-click copy.
Roman Numeral Converter →
Turn numbers (1–3999) into Roman numerals and back, catching wrongly-written ones (like IIII).
Number to Words →
Spell out a number in plain English words — handy for cheques, contracts and learning.
Password Generator →
Strong, random, secure passwords with custom length and character sets.