31 free tools · no signup
Every online tool you need, in one place.
Etoolio is a growing collection of fast, private, no-signup tools — calculators, converters and generators that run entirely in your browser.
🔒 100% in-browser⚡ No uploads for common tasks🆓 Always free
The toolbox
Pick a tool and go
31 live now, more shipping every week.
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Health & Fitness
Body, pregnancy & date-based health calculators.
BMI CalculatorCalculate your Body Mass Index and see your healthy weight range.Age CalculatorFind your exact age in years, months, days, hours and minutes.Due Date CalculatorEstimate your baby's due date from your last period or conception date.Ovulation CalculatorPredict your most fertile days and ovulation date.
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Calculators
Everyday math, units, percentages & conversions.
Online CalculatorA fast, clean calculator for everyday math.Percentage CalculatorCalculate percentages, increases, decreases and differences.Date CalculatorCount days between two dates or add and subtract time.Unit ConverterConvert length, weight, temperature, volume and speed.File Size ConverterConvert between bytes, KB, MB, GB and TB.Currency ConverterConvert between world currencies with up-to-date rates.
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Text & Code
Encode, format, hash & transform text and code.
Text Case ConverterConvert text to uppercase, lowercase, title, sentence & more.Lorem Ipsum GeneratorGenerate placeholder paragraphs, sentences or words.Base64 Encoder / DecoderEncode text to Base64 or decode Base64 back to text.URL Encoder / DecoderEncode or decode URLs and query strings safely.JSON Formatter & ValidatorFormat, validate and minify JSON with error highlighting.Hash GeneratorGenerate MD5, SHA-1 and SHA-256 hashes from text.Color ConverterConvert colors between HEX, RGB and HSL with a live preview.
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Generators
Passwords, QR codes, test data & more, instantly.
Password GeneratorGenerate strong, random passwords with custom rules.QR Code GeneratorCreate downloadable QR codes for links, text and more.Test Data GeneratorGenerate realistic fake data for testing and demos.WhatsApp Link GeneratorCreate wa.me click-to-chat links with a pre-filled message.Grocery List GeneratorBuild and organize a printable grocery shopping list.Random Decision MakerCan't decide? Add options and let chance pick one.
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Image
Convert, compress & clean up images in-browser.
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Time & Productivity
Timers, time zones, typing & focus tools.
No accounts. No paywalls. Just tools.
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