✨ Discover Tools

Welcome to BlueTree Tools

Your premium suite of daily utility tools. Beautiful, fast, and always free.

🎂

Age Calculator

Calculate exact age in years, months, and days. Find total days, weeks, hours, and minutes lived.

Exact AgeTotal Days LivedNext Birthday Countdown
📐

Aspect Ratio Calculator

Calculate image and video dimensions from any aspect ratio. Supports 16:9, 4:3, 1:1, and custom ratios.

Common Presets (16:9, 4:3, 1:1)Custom Ratio InputVisual Preview
🧮

Base Converter

Convert between decimal, hex, octal, and binary.

Live ConversionCopy OutputClean UI
⚖️

BMI Calculator

Check your Body Mass Index and ideal weight easily.

Instant ResultIdeal WeightCategory Check
🪙

Coin Toss

A realistic coin flip simulator with customizable odds.

4 DesignsProbabilitySimulation
🎨

Color Picker

Pick, convert, and save colors in HEX, RGB, and HSL.

HEX/RGB/HSLColor PreviewCopy Function
⏱️

Countdown Timer

Simple and clean timer for your daily activities.

Custom TimePreset ButtonsVisual Display
🔀

CSV to JSON

Easily convert CSV data into JSON format.

Fast ConversionCopy to ClipboardError Handling
📅

Date Calculator

Calculate days between dates, add or subtract days, and find exact durations.

Date DifferenceAdd/Subtract DaysBusiness Days
🎲

TRPG Dice

Full set of RPG dice (D4 to D100) for your next session.

Multi-Dice3D6 SupportHistory
💾

File Size Converter

Convert file sizes between bits, bytes, KB, MB, GB, TB, and PB.

All UnitsInstant ResultsReference Table
🎯

Group Picker

Randomly split names into teams or groups effortlessly.

Random SplitLeader SelectionGroup Count
🔏

Hash Generator

Generate SHA hashes for any text.

SHA-1SHA-256SHA-512
🗜️

Image Compressor

Compress images to reduce file size while maintaining quality.

Adjustable QualityResize OptionsLocal Processing
↔️

Image Resizer

Resize images to exact dimensions while keeping the workflow entirely local.

Exact DimensionsAspect Ratio LockLocal Processing
📋

JSON Formatter

Format, validate, and minify JSON data with syntax highlighting.

Auto FormatSyntax ValidationMinify
🛡️

JWT Decoder

Decode JSON Web Tokens instantly.

Header DecodePayload DecodeSecure
⌨️

Keycode Info

Find JavaScript event keycodes instantly.

event.keyevent.codeModifiers
📓

Markdown Editor

Write and preview markdown in real-time.

Live PreviewSyntax HilightingExport
🏆

Name Picker

Randomly pick winners from a list of names for giveaways and events.

Animated SelectionMultiple WinnersHistory
🌈

Palette Generator

Generate color palettes from a base color.

Tailwind ShadesCopy HEXVisual Preview
🍕

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🔐

Password Generator

Create strong, uncrackable passwords in one click.

Custom LengthSymbolsCopy Function
📊

Percentage Calculator

Calculate discounts, increases, decreases, and percentage relationships easily.

3 Calculation ModesDiscount CalculatorChange Rate Calculator
🍅

Pomodoro Timer

Boost productivity with focused work sessions and timed breaks.

Focus & Break ModesSession TrackingAuto-switching
📱

QR Code Generator

Generate QR codes for text or URLs instantly.

Instant GenerationDownload PNGHigh Quality
🎱

Random Number

Generate truly random numbers within any range.

RangeAnimationHistory
🎲

Dice Roller

Roll up to 5 standard dice for games and decisions.

Multiple DiceTotal SumHistory
😴

Sleep Calculator

Calculate the best time to sleep or wake up based on 90-minute sleep cycles.

Sleep CyclesWake Up TimeBedtime Calculator
🔗

Slug Generator

Convert text into URL-friendly slugs.

Auto-formatCopy to ClipboardFast

Stopwatch

A precise stopwatch with lap functionality.

Lap TimesMillisecond PrecisionClean UI
🔄

Text Converter

Switch between full-width and half-width characters instantly.

AlphanumericKatakanaSymbol Conversion
💵

Tip Calculator

Calculate restaurant tips and split bills easily among friends.

Tip PercentageBill SplittingRound Up
📏

Unit Converter

Quickly convert length, weight, and more between units.

LengthWeightTemperatureTime
🆔

UUID Generator

Generate unique UUIDs (v4) instantly. Supports multiple formats and batch generation.

Batch GenerateMultiple FormatsCopy to Clipboard
🎰

Vertical Roulette

A fun vertical scrolling wheel for random selections.

Add ItemsVertical ScrollHistory
🖼️

WebP Converter

Convert images to WebP to speed up your website.

Batch ConvertSize ReductionHistory
📝

Word Counter

Count characters, words, and lines in your text in real-time.

Char CountWord CountLine Count