A basic calculator with a simple history for quick checks.

Calculate your Body Mass Index (BMI) from height and weight.

Estimate daily calorie needs using simple inputs.

Estimate investment growth with compounding over time.

Calculate sale price and savings from a discount percentage.

Estimate fuel cost for a trip using distance and fuel efficiency.

Calculate weighted grades and overall course totals.

Estimate monthly payments and total interest over the life of a loan.

Calculate percentages, percent of a number, and quick percentage math.

Calculate percentage increase or decrease between two values.

Advanced calculator for trig, powers, logs, and more.

Split a bill and calculate tip amounts per person.

Pick a color and copy HEX/RGB values instantly.

Convert between HEX, RGB, HSL, and other color formats.

Generate simple color palettes for UI and branding.

Check color contrast ratios for WCAG accessibility.

Build CSS gradients and copy the final code.

Convert common units across length, weight, and temperature in one place.

Convert between square feet, square meters, acres, hectares, and other area units.

Convert currencies using live exchange rates (when available).

Convert digital storage sizes across bytes, KB, MB, GB, and TB.

Convert distance and length units like miles, kilometers, feet, and meters.

Convert values between binary, decimal, hex, and octal.

Convert speed units like MPH, KMH, and knots.

Convert temperature values between Celsius, Fahrenheit, and Kelvin.

Convert volume units like liters, gallons, cups, and milliliters.

Convert weights between pounds, kilograms, grams, and ounces.

Encrypt or decrypt text using a simple shift cipher.

Generate MD5, SHA-1, and SHA-256 hashes for quick checks.

Encode and decode HTML entities for safe output.

Decode JSON Web Tokens and inspect headers and payloads.

Translate text to Morse code and back.

Encode or decode URL components safely.

Format and validate JSON with clean indentation.

Test regular expressions and preview matches quickly.

Convert CSV data into JSON quickly for apps and APIs.

Format SQL queries for readability and sharing.

Format and validate XML with cleaner structure.

Convert YAML into JSON for tooling and configuration.

Send HTTP requests and inspect API responses directly in your browser.

Encode or decode Base64 text instantly in your browser.

Format JS, CSS, and HTML for cleaner code blocks.

Parse cron expressions into readable schedules.

Compare two code blocks and highlight differences.

Common Git commands in a quick reference format.

Look up HTTP status codes and their meanings.

Generate small fake datasets for testing.

Minify CSS, JS, and HTML to reduce file size.

Plan debt payoff using the snowball method and see your next steps.

Track assets and debts over time to see your net worth trend.

Estimate how long it will take to reach a savings target.

Track expenses and get a simple monthly view of spending.

View exchange-rate history for a currency pair (when available).

Estimate mortgage payments and total interest from basic inputs.

See how extra payments affect loan term and total interest paid.

Estimate retirement savings growth with simple assumptions.

Calculate return on investment and compare outcomes quickly.

Flip a coin for quick yes/no decisions.

Roll virtual dice with quick re-roll and totals.

Ask a yes/no question and get a playful random answer.

A small quiz engine with scoring for quick practice.

Pick a random item from a list you paste in.

Classic Tic Tac Toe you can play right in the browser.

Generate strong random passwords locally in your browser.

Generate QR codes from text or links for quick sharing.

Browse, search, and copy emojis quickly.

Create a simple invoice layout you can copy or export.

Generate random colors and copy common formats.

Generate realistic sample names for testing and mockups.

Generate random numbers with simple controls.

Generate simple username ideas with quick refresh.

Generate unique UUIDs for testing, IDs, and datasets.

Estimate due date based on a starting date.

Estimate screen time totals over a month or year using simple inputs.

Estimate ideal sleep/wake times based on sleep cycles.

Track daily water intake with a simple, lightweight log.

Interval timer for HIIT, rounds, and workouts with breaks.

Generate clean initials avatars for profiles and placeholders. Creates simple SVG avatar images instantly in your browser.

Generate favicon files for websites from an image.

Calculate and lock aspect ratios for resizing images consistently.

Reduce image file size while keeping good visual quality.

Convert images between PNG, JPG, and WEBP formats.

Crop images to a selected area with a simple preview.

Apply basic image filters and adjustments locally.

View basic image metadata locally in your browser.

Resize images to a target width/height quickly.

Create flashcards for study and quick review.

Practice multiplication with quick drills.

Browse chemical elements with a simple interactive table.

Plan study blocks with breaks and a simple goal for the session.

Measure typing speed (WPM) and accuracy.

Basic tuner to help you tune your instrument.

A simple metronome for tempo practice.

Fetch basic video metadata and details (where supported).

Check whether an email appears in known breach datasets (where supported).

Estimate password strength and common weakness patterns.

Use a temporary email address (where supported).

Check whether a VPN might be active (best-effort detection).

Generate short personal bio ideas for profiles, websites, or social media.

Count characters for posts, SMS, and platform limits.

Generate simple hashtag ideas from keywords.

Quick notes saved locally in your browser (no account).

Write freely, then turn your thoughts into a simple checklist.

Convert text to UPPERCASE, lowercase, Title Case, and more.

Remove duplicate lines from a pasted list of text.

Bulk replace text across a block of content in one step.

Generate placeholder text for layouts and drafts.

Write markdown and preview the output live.

Turn messy meeting notes into a clean, structured template.

Estimate reading time from word count and a chosen reading pace.

Remove duplicate lines from a list while preserving order.

Reverse, shuffle, trim, and transform text quickly.

Compare two texts and spot what changed quickly.

Sort lines A–Z or Z–A for quick cleanup and organization.

Speak text aloud using your browser’s built-in voices.

Count words, characters, sentences, and paragraphs in any text.

Find the most common words in text and see simple frequency counts.

A simple live clock with 12/24-hour display toggle.

Start, stop, lap, and reset with a clean, readable time display.

Calculate an age breakdown between two dates (years, months, days), plus totals in days, weeks, and months.

Add or subtract days from a date and instantly see the resulting date.

Sort tasks by urgent vs important to clarify what to do next.

Focus timer with break cycles for calm, structured work sessions.

Count down to any future date with a clear remaining time breakdown.

A countdown timer for quick sessions, reminders, and short breaks.

Convert Unix timestamps to human dates (and back) for quick debugging and logs.

View current times across multiple time zones at a glance.

Plan your day using time blocks and a simple priority list.

Compare decisions side-by-side with a simple pros/cons layout.

Build an hour-by-hour schedule you can adjust as your day changes.

A simple task list saved locally in your browser.

Set weekly goals and track progress with a clear weekly view.

Save a simple list of bookmarks locally in your browser for quick access.

A simple clipboard history helper (where supported).

A quick helper for making small decisions when you feel stuck.

Track daily habits and build streaks over time.

Create short links (where supported by the configured provider).

Set a goal and track progress with a simple visual meter.

Forecast powered by Open-Meteo with a clean daily view.

View the current moon phase in a simple format.

Generate common Apache .htaccess rules (redirects, security, caching).

Preview title and description like a Google search snippet.

Generate basic SEO meta tags (title, description, robots).

Generate Open Graph tags for cleaner social sharing previews.

Create a simple robots.txt for crawler guidance.

Generate a clean robots.txt file with a few safe presets.

Generate a basic XML sitemap layout for websites.

Check certificate basics and common SSL issues.

Check email subject length, clarity, and common spam signals.