115 free, browser-based tools. No signup, no login – everything runs client-side in your browser.
AI Tools (Auburn AI)
AI Prompt BuilderAI Token CounterClaude Voice ToolsVoice WriterAI Image Cost CalculatorMidjourney Prompt BuilderAI Content Detector
Calculators – Health
BMI CalculatorBody Fat CalculatorCalorie Calculator (BMR + TDEE)Macro CalculatorOvulation CalculatorSleep Calculator
Calculators – Math
Age CalculatorDays Between DatesGPA CalculatorImage ResizerNumber to WordsPercentage CalculatorRoman Numeral ConverterScientific CalculatorStandard Deviation CalculatorTime Duration CalculatorUser Agent Parser
Calculators – Money
AI API Cost Calculator 2026 – Compare Claude, GPT, Gemini, DeepSeekCanadian Income Tax Calculator (2026)Compound Interest CalculatorCredit Card ValidatorCurrency ConverterDiscount CalculatorFuel Cost CalculatorLoan CalculatorMonthly Budget CalculatorMortgage CalculatorPay Raise CalculatorPrice Per Unit CalculatorProfit Margin CalculatorRetirement CalculatorROI CalculatorSalary CalculatorSales Tax CalculatorSavings Goal CalculatorTip Calculator
Career
Communication
Contacts
Cooking
Fun + Random
Home + Auto
Music
Free Lo-Fi & Ambient Background Music Radio
Network + IP
Study
Text Tools
Anagram FinderCharacter CounterCharacter Frequency AnalyzerFind and ReplaceLine Number AdderLorem Ipsum GeneratorMarkdown PreviewPalindrome CheckerRemove Duplicate LinesReverse TextRhyme FinderShuffle LinesSort LinesText Case ConverterText DiffText to SpeechVoice WriterWhitespace NormalizerWord CounterWord Unscrambler
Time + Productivity
Unit Converters
Area ConverterLength ConverterTemperature ConverterVolume ConverterWeight ConverterStorage Converter
Web + Code
Base64 Encoder/DecoderBox Shadow GeneratorColor Contrast CheckerColor ConverterColor Palette GeneratorCron ParserCSV to JSON ConverterFavicon GeneratorGradient CSS GeneratorHash GeneratorHTML Entity EncoderHTTP Status Code LookupJSON FormatterJSON to CSV ConverterJSON to YAMLJWT DecoderNumber Base ConverterPassword GeneratorQR Code GeneratorRandom Number GeneratorRegex TesterUnix Timestamp ConverterURL Encoder/DecoderURL Slug GeneratorUUID GeneratorYAML to JSON