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.

Time & productivity

Online Notepad →

A quick notepad that saves automatically in your browser — count words and download as a text file.

Typing Speed Test →

Test how fast you type — get your words per minute (WPM) and accuracy score.

Click Speed Test →

See how fast you can click — measure your clicks per second (CPS) in timed rounds.

Reaction Time Test →

Wait for green, click as fast as you can — your reflexes in milliseconds over 5 rounds.

Aim Trainer →

Click 20 targets as fast as you can — measure your speed and mouse accuracy.

Spacebar Counter →

How many times can you press the spacebar? Timed rounds and presses per second.

Number Memory Test →

A number flashes, then you type it from memory — how many digits can you hold?

Stopwatch →

Count up from zero with start, stop, reset and lap times — time anything in your browser.

Countdown Timer →

Set hours, minutes and seconds and get an alarm when the timer reaches zero.

Pomodoro Timer →

Focus in 25-minute work sprints with short breaks — the popular Pomodoro method.

Text tools

Case Converter →

UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case and more — instantly.

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.

Remove Line Breaks →

Strip line breaks out of text and join it into one clean block — or tidy paragraph spacing.

Word Frequency Counter →

See which words appear most often in your text, ranked by how many times each is used.

Lorem Ipsum Generator →

Generate placeholder text by paragraphs, sentences or words for mockups and layouts.

Word Counter →

Count words, characters, sentences, reading time and check Twitter/SMS/SEO limits.

Calculators

Aspect Ratio Calculator →

Find the width-to-height ratio (like 16:9) and resize without stretching.

Loan Calculator →

See the monthly payment and total interest on a car, home or personal loan (EMI).

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.

Discount Calculator →

Find the sale price and how much you save — or the percent off from two prices.

Percentage Calculator →

Find a percent of a number, what % of a total, and increase/decrease — discounts, tips, grades.

Tip Calculator →

Work out the tip, the total, and split the bill evenly between any number of people.

BMI Calculator →

Check if your weight is in a healthy range for your height (body mass index), metric or imperial.

Age Calculator →

Exact age in years, months and days, total days lived, and your next-birthday countdown.

Days Between Dates →

Count the days between two dates — plus weeks, months and weekdays — instantly.

Scientific Calculator →

A calculator with scientific functions (sin, cos, log, square root) you can use with your keyboard.

Developer tools

JSON Formatter →

Make messy JSON data readable, check it for errors (validate), or minify it — in your browser.

Base64 Encode & Decode →

Turn text into Base64 — a safe plain-text format for sending data — and back, full UTF-8 (emoji and accents included).

Regex Tester →

Test a regular expression against your text and see every match and capture group, highlighted live.

URL Encode & Decode →

Make text safe to put inside a web link (URL encoding) and turn it back again.

Cron Expression Parser →

Paste a cron expression and see what it means in plain English, with the next run times.

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.

Number Base Converter →

Convert numbers between binary, octal, decimal and hexadecimal — type in any base and see the rest instantly.

JSON to CSV Converter →

Convert a JSON array of objects into CSV — or turn CSV back into JSON — right in your browser.

PX to REM Converter →

Convert pixels to rem and em for CSS from your root font size, with instant two-way results.

Unix Timestamp Converter →

Turn the number computers use for time (epoch) into a date and back — local time and UTC.