UtlKit โ 170+ Free Online Tools
Financial calculators, text tools, developer utilities, unit converters โ no signup required.
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๐ฐ Finance(25)
Loan Calculator
Calculate monthly payments, total interest, and amortization schedule for loans.
โ๐ฐ FinanceCompound Interest Calculator
Calculate compound interest growth with regular contributions and compounding frequency.
โ๐ฐ FinanceCAGR Calculator
Calculate Compound Annual Growth Rate of your investment over time.
โ๐ฐ FinanceIRR Calculator
Calculate Internal Rate of Return from cash flow series. Supports NPV calculation.
โ๐ฐ FinanceROI Calculator
Calculate Return on Investment with holding period return and annualized ROI.
โ๐ฐ FinanceDrawdown Calculator
Calculate maximum drawdown and recovery from portfolio value series.
โ๐ฐ FinanceSIP Calculator
Calculate Systematic Investment Plan returns with regular monthly contributions.
โ๐ฐ FinanceSharpe Ratio Calculator
Calculate Sharpe Ratio for risk-adjusted return analysis. Input return series or summary statistics.
โ๐ฐ FinanceDCA Calculator
Calculate dollar-cost averaging returns for regular investments.
โ๐ฐ FinanceOdds Converter
Convert between fractional, decimal, American (Moneyline) odds and implied probability.
โ๐ฐ FinanceCurrency Converter (Manual Rate)
Convert between currencies using manually entered exchange rates. Pure client-side calculation.
โ๐ฐ FinanceFIRE Calculator
Calculate when you can achieve Financial Independence, Retire Early
โ๐ฐ FinanceDebt Snowball Calculator
Compare snowball vs avalanche debt payoff strategies
โ๐ฐ FinanceCredit Card Payoff Calculator
Plan your credit card debt payoff strategy
โ๐ฐ FinanceRent vs Buy Calculator
Compare the total cost of renting vs buying over time
โ๐ฐ FinanceRule of 72
Quickly estimate how long it takes for an investment to double
โ๐ฐ FinanceSavings Goal Calculator
Calculate how much to save monthly to reach your financial goal
โ๐ฐ FinanceInflation Power Calculator
See how inflation erodes your purchasing power over time
โ๐ฐ FinanceNet Worth Calculator
Track your total net worth by adding assets and liabilities
โ๐ฐ FinanceSalary Converter
Convert between annual, monthly, weekly, and hourly pay
โ๐ฐ FinanceRetirement Planner
Plan your retirement savings and projected income
โ๐ฐ FinanceEmergency Fund Calculator
Calculate how much you need for a financial safety net
โ๐ฐ FinanceReal Interest Rate Calculator
Calculate the real return after adjusting for inflation
โ๐ฐ FinanceMortgage Refinance Calculator
Calculate interest savings from early mortgage repayment.
โ๐ฐ FinanceConvertible Bond Calculator
Calculate conversion value, premium ratio, and shares for convertible bonds.
โ๐งฎ Calculator(12)
BMI Calculator
Calculate Body Mass Index with metric/imperial units and health categories.
โ๐งฎ CalculatorAge Calculator
Calculate exact age in years, months, days. See total days lived and next birthday.
โ๐งฎ CalculatorDiscount Calculator
Calculate discount amount, final price, tax, and tip instantly.
โ๐งฎ CalculatorTip Calculator
Calculate tip amount and split the bill. Free online tip calculator.
โ๐งฎ CalculatorGrade Calculator
Calculate your weighted course grade with assignments, exams, and their weights.
โ๐งฎ CalculatorRandom Number Generator
Generate random numbers with customizable range, quantity, and options.
โ๐งฎ CalculatorRandom Picker
Pick a random number from a range or select a random item from a list.
โ๐งฎ CalculatorScientific Calculator
Scientific calculator with trig functions, logarithms, and more.
โ๐งฎ CalculatorRoman Numeral Converter
Convert between Arabic numbers (1-3999) and Roman numerals.
โ๐งฎ CalculatorPercentage Calculator
Calculate percentages, increases, decreases, and differences instantly.
โ๐งฎ CalculatorExtended Percentage Calculator
Calculate what % of, % increase/decrease, % more/less.
โ๐งฎ CalculatorPercentage Change Calculator
Calculate percentage increase or decrease between values
โ๐ Text(15)
Text Counter
Count characters, words, sentences, paragraphs. Transform text case instantly.
โ๐ TextCase Converter
Convert text between uppercase, lowercase, Title Case, camelCase, snake_case, and more.
โ๐ TextText Reverser
Reverse text character by character, word by word, or line by line.
โ๐ TextSort Lines
Sort text lines alphabetically, numerically, or randomly.
โ๐ TextRemove Duplicates
Remove duplicate lines from text while preserving original order.
โ๐ TextFind & Replace
Find and replace text with regex, case sensitivity, and whole word support.
โ๐ TextWhitespace Cleaner
Remove extra whitespace, empty lines, and tabs from text.
โ๐ TextCharacter Counter & Analyzer
Count characters, words, sentences, and analyze your text in detail
โ๐ TextWord Frequency Counter
Count word frequency in text. Case-insensitive analysis with punctuation removal.
โ๐ TextDiff Checker
Compare two texts line by line. See additions and removals instantly.
โ๐ TextHTML to Text Converter
Convert HTML markup to plain text. Extract readable content.
โ๐ TextLorem Ipsum Generator
Generate placeholder text. Choose paragraphs, sentences, or words.
โ๐ TextMarkdown Preview
Write Markdown and see live preview. Pure client-side rendering.
โ๐ TextJSON Formatter
Format, minify, and validate JSON. Pretty-print with configurable indentation.
โ๐ TextReading Time Calculator
Calculate reading time, speaking time, and word statistics for any text.
โ๐ Converter(9)
Unit Converter
Convert length, weight, temperature, area, volume, speed, and data units.
โ๐ ConverterColor Converter
Convert between HEX, RGB, and HSL color formats with live preview.
โ๐ ConverterText/Binary Converter
Convert text to binary and binary to text.
โ๐ ConverterMorse Code Encoder/Decoder
Encode text to Morse code and decode Morse code back to text with audio playback.
โ๐ ConverterNumber Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal bases instantly.
โ๐ ConverterFile Size Converter
Convert between bytes, KB, MB, GB, TB, and PB
โ๐ ConverterImage to PDF Converter
Convert JPG/PNG images to PDF. Free, fast, client-side only.
โ๐ ConverterPDF Merger
Merge multiple PDF files into one. 100% client-side, files never leave your browser.
โ๐ ConverterBase64 Encoder/Decoder
Encode text to Base64 or decode Base64. Unicode support, 100% client-side.
โ๐ป Developer(36)
JSON/YAML Converter
Convert between JSON and YAML formats.
โ๐ป DeveloperJSON Difference Checker
Compare two JSON strings and find differences
โ๐ป DeveloperJSON to CSV Converter
Convert JSON arrays of objects to CSV format. Download or copy the result.
โ๐ป DeveloperCSV to JSON Converter
Convert CSV data to JSON array of objects. First row is used as headers.
โ๐ป DeveloperCSS Formatter
Format, beautify, and minify CSS code. Free, fast, no sign-up.
โ๐ป DeveloperCSS Minifier
Minify CSS code to reduce file size. Removes whitespace and comments.
โ๐ป DeveloperCSS Units Converter
Convert between px, rem, em, vw, vh, % CSS units.
โ๐ป DeveloperHTML Formatter
Format, minify, and beautify HTML code with configurable indentation.
โ๐ป DeveloperJavaScript Formatter & Minifier
Format, beautify, and minify JavaScript code.
โ๐ป DeveloperSQL Formatter
Format, beautify, and minify SQL queries. Free, fast, no sign-up.
โ๐ป DeveloperXML Formatter
Format, beautify, and minify XML documents. Free, fast, no sign-up.
โ๐ป DeveloperYAML Formatter
Format, beautify, and validate YAML files. Free, fast, no sign-up.
โ๐ป DeveloperRegex Tester
Test regular expressions against text. See all matches instantly.
โ๐ป DeveloperCron Expression Generator
Visually build cron schedule expressions. See human-readable descriptions.
โ๐ป DeveloperMIME Types Lookup
Search and lookup common MIME types by file extension.
โ๐ป DeveloperHTTP Status Codes
Complete reference of HTTP status codes from 1xx to 5xx.
โ๐ป DeveloperURL Encoder/Decoder
Encode or decode URL components with percent-encoding (UTF-8).
โ๐ป DeveloperURL Slug Generator
Generate SEO-friendly URL slugs from any text.
โ๐ป DeveloperUUID Generator
Generate cryptographically secure UUID v4 identifiers. Batch generate up to 100.
โ๐ป DeveloperJWT Decoder
Decode JSON Web Tokens to view Header and Payload. No verification.
โ๐ป DeveloperHTML Entities Encoder/Decoder
Encode special characters to HTML entities or decode them back.
โ๐ป DeveloperChmod Calculator
Calculate Unix file permissions. Convert between octal and symbolic notation.
โ๐ป DeveloperString Escape/Unescape
Escape and unescape special characters for JavaScript, HTML, and URLs.
โ๐ป DeveloperString Similarity
Compare two strings and calculate Levenshtein distance and similarity percentage.
โ๐ป DeveloperCSV to Markdown Table
Convert CSV data to Markdown table format.
โ๐ป DeveloperMarkdown Table Generator
Visual table builder for Markdown tables. Add rows, columns, and alignment.
โ๐ป DeveloperMeta Tag Generator
Generate SEO-friendly meta tags for your website
โ๐ป DeveloperWCAG Color Contrast Checker
Check color contrast ratios against WCAG 2.1 AA and AAA standards.
โ๐ป DeveloperCSS Box Shadow Generator
Visually create CSS box shadows with live preview
โ๐ป DeveloperBitwise Calculator
Perform bitwise operations (AND, OR, XOR, NOT, Shift) on numbers.
โ๐ป DeveloperABI Encoder/Decoder
Encode and decode Ethereum ABI function signatures with function selectors
โ๐ป DeveloperKeccak-256 Hash Generator
Compute Keccak-256 hashes for text or hex data, with function selector and address extraction
โ๐ป DeveloperBlock Explorer Link Generator
Generate block explorer links for Ethereum, BSC, Polygon, and other EVM chains
โ๐ป DeveloperFavicon Generator
Generate favicons in all sizes from any image. Download as ZIP with manifest and HTML links.
โ๐ป DeveloperApp Icon Generator
Generate app icons for iOS, Android, Web, macOS, and Windows in all required sizes. Download as ZIP.
โ๐ป DeveloperHex UTF-8 Base64 Converter
Convert between Hex, UTF-8 text, and Base64 encodings.
โ๐ก๏ธ Security(6)
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes. All in your browser.
โ๐ก๏ธ SecurityAES Encrypt/Decrypt
Encrypt and decrypt text using AES-256-GCM. 100% client-side.
โ๐ก๏ธ SecurityHMAC Generator
Generate HMAC signatures using SHA-256, SHA-384, or SHA-512. Client-side only.
โ๐ก๏ธ SecurityPassword Generator
Generate strong, cryptographically secure passwords. 100% client-side.
โ๐ก๏ธ SecurityPassword Strength Checker
Analyze password strength locally - no data is sent to any server
โ๐ก๏ธ SecurityCaesar Cipher / ROT13
Classic substitution cipher with adjustable shift. Encrypt and decrypt text.
โ๐จ Media(16)
QR Code Generator
Generate QR codes for URLs, text, and more. Download as PNG.
โ๐จ MediaImage Compressor
Compress images in your browser. No upload needed. Adjust quality freely.
โ๐จ MediaImage Resizer
Resize images with aspect ratio control. Export as PNG, JPEG, or WebP.
โ๐จ MediaColor Palette Generator
Generate harmonious color palettes with complementary, analogous, triadic schemes.
โ๐จ MediaCSS Gradient Generator
Create CSS linear and radial gradients with live preview.
โ๐จ MediaAspect Ratio Calculator
Calculate aspect ratios and find optimal resolutions
โ๐จ MediaAudio Trimmer
Trim audio files directly in your browser. Select the section you want to keep and export as WAV.
โ๐จ MediaAudio Merger
Merge multiple audio files into one. Add tracks, trim selection, reorder, and export as WAV or MP3.
โ๐จ MediaVoice Recorder
Record audio from your microphone directly in your browser. Trim, preview, and export as WAV or MP3.
โ๐จ MediaAudio Converter
Convert audio files between WAV and MP3 directly in your browser. Change bitrate and sample rate. No upload needed.
โ๐จ MediaImage Converter
Convert images between PNG, JPEG, and WebP formats directly in your browser. No upload needed.
โ๐จ MediaImage Cropper
Crop images to any size or aspect ratio directly in your browser. No upload needed.
โ๐จ MediaSocial Media Image Cropper
Crop images to the perfect size for any social media platform. No upload needed.
โ๐จ MediaImage Watermark Tool
Add text or logo watermarks to your images directly in your browser. No upload needed.
โ๐จ MediaSVG to Image Converter
Convert SVG files to PNG, JPEG, or WebP raster images directly in your browser. No upload needed.
โ๐จ MediaImage Info Viewer
View detailed image metadata โ dimensions, file size, format, and EXIF data like camera, location, and exposure. No upload needed.
โ๐ Date & Time(3)
Date Calculator
Add/subtract days from dates or calculate the difference between two dates.
โ๐ Date & TimeUnix Timestamp Converter
Convert Unix timestamp to date and vice versa. Real-time clock.
โ๐ Date & TimePomodoro Timer
Focus timer with customizable work and break intervals.
โ๐ Trading & Analysis(29)
Pip Calculator
Calculate pip value for forex trading pairs. Determine profit/loss per pip movement.
โ๐ Trading & AnalysisKelly Criterion
Calculate optimal bet size using the Kelly Criterion formula.
โ๐ Trading & AnalysisMaximum Drawdown
Calculate maximum drawdown from a price series.
โ๐ Trading & AnalysisValue at Risk
Calculate Value at Risk (VaR) for portfolio risk assessment.
โ๐ Trading & AnalysisProfit Factor
Calculate profit factor for trading strategy evaluation.
โ๐ Trading & AnalysisTrading Expectancy
Calculate trading expectancy to evaluate strategy edge.
โ๐ Trading & AnalysisPosition Sizing
Calculate optimal position size based on account risk parameters.
โ๐ Trading & AnalysisMonte Carlo Stock Simulation
Monte Carlo simulation for stock price forecasting.
โ๐ Trading & AnalysisImplied Volatility Calculator
Back out implied volatility from options market prices using Black-Scholes model.
โ๐ Trading & AnalysisBlack-Scholes Option Pricing
Calculate theoretical option prices using the Black-Scholes-Merton model.
โ๐ Trading & AnalysisOptions Greeks Calculator
Calculate Delta, Gamma, Theta, Vega, and Rho for options positions.
โ๐ Trading & AnalysisIV Percentile & IV Rank
Measure whether options are cheap or expensive relative to historical implied volatility.
โ๐ Trading & AnalysisBacktest Performance Metrics
Calculate comprehensive trading system performance metrics from backtest results.
โ๐ Trading & AnalysisATR Stop Loss Calculator
Set dynamic stop-loss based on Average True Range
โ๐ Trading & AnalysisBollinger Bandwidth
Calculate Bollinger Band width and %B indicator
โ๐ Trading & AnalysisCorrelation Matrix
Calculate pairwise correlation between assets
โ๐ Trading & AnalysisBollinger Bands Calculator
Calculate Bollinger Bands from price data. Identify price position relative to bands.
โ๐ Trading & AnalysisMACD Calculator
Calculate MACD line, Signal line, and Histogram from price data.
โ๐ Trading & AnalysisRSI Calculator
Calculate Relative Strength Index from price data. Identify overbought and oversold conditions.
โ๐ Trading & AnalysisATR Calculator
Calculate Average True Range for volatility measurement. Input high, low, close data.
โ๐ Trading & AnalysisMoving Average Calculator
Calculate SMA and EMA moving averages. Detect golden cross and death cross patterns.
โ๐ Trading & AnalysisFibonacci Retracement Calculator
Calculate Fibonacci retracement and extension levels from high and low prices.
โ๐ Trading & AnalysisStock Profit Calculator
Calculate stock trading profit/loss with commission, tax, and annualized return.
โ๐ Trading & AnalysisPosition Size Calculator
Calculate optimal trade position size based on account risk and stop-loss.
โ๐ Trading & AnalysisRisk/Reward Ratio Calculator
Calculate risk/reward ratio and required win rate for your trades
โ๐ Trading & AnalysisImplied Probability Calculator
Convert option delta or probability to implied odds
โ๐ Trading & AnalysisFutures Contract Calculator
Calculate margin requirements, P&L, and leverage impact for futures contracts
โ๐ Trading & AnalysisStop Loss / Take Profit Calculator
Calculate stop loss and take profit levels for your trades
โ๐ Trading & AnalysisBeta Calculator
Calculate stock beta coefficient, alpha, and risk metrics.
โ๐ช Crypto & DeFi(13)
DRIP Calculator
Project dividend reinvestment growth over time with compound returns.
โ๐ช Crypto & DeFiLiquidation Price
Calculate liquidation price for leveraged crypto positions.
โ๐ช Crypto & DeFiFunding Rate
Check and calculate perpetual swap funding rates.
โ๐ช Crypto & DeFiImpermanent Loss
Calculate impermanent loss from providing liquidity in AMM pools.
โ๐ช Crypto & DeFiStaking APY
Calculate staking rewards and APY for proof-of-stake cryptocurrencies.
โ๐ช Crypto & DeFiCrypto Mining Profit Calculator
Estimate mining profitability based on hashrate, difficulty, and electricity costs.
โ๐ช Crypto & DeFiETH Gas Fee Estimator
Estimate transaction costs on Ethereum and Layer 2 networks.
โ๐ช Crypto & DeFiDEX Swap Calculator
Calculate output amounts and price impact for decentralized exchange swaps
โ๐ช Crypto & DeFiCrypto Tax Calculator
Calculate capital gains tax on cryptocurrency transactions
โ๐ช Crypto & DeFiToken Unlocks Calculator
Track token unlock schedules and dilution impact over time
โ๐ช Crypto & DeFiAPY/APR Converter
Convert between Annual Percentage Rate (APR) and Annual Percentage Yield (APY)
โ๐ช Crypto & DeFiETH Address Checksum Validator
Validate and compute EIP-55 checksum for Ethereum addresses.
โ๐ช Crypto & DeFiMulti-Sig Wallet Calculator
Calculate security and survival probability for multi-signature wallet configurations.
โ๐ Valuation(6)
P/E & PEG Calculator
Evaluate stock valuation with P/E ratio and PEG ratio analysis.
โ๐ ValuationMarket Cap Calculator
Calculate market capitalization and see mega/large/mid/small/micro classification.
โ๐ ValuationEquity Risk Premium Calculator
Estimate the excess return investors demand for holding equities over risk-free assets.
โ๐ ValuationMargin of Safety Calculator
Calculate the margin of safety between a stock's intrinsic value and its market price.
โ๐ ValuationP/E P/B Valuation
Evaluate stock using Price/Earnings and Price/Book ratios
โ๐ ValuationEV/EBITDA Valuation
Enterprise value multiple for business valuation
โ170 tools and counting. More coming soon!
