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ToolZico — Calculate, Convert, Generate
Free Online Tools. No Signup. No Uploads. 100% Private.
The Utility Matrix
Browse the empire by data state.
PDF Tools
Convert images to PDF documents in your browser.
9 tools→
Image Tools
Convert, rotate and edit images in the browser.
24 tools→
Text Tools
Count, transform, clean and analyze text.
46 tools→
Code & Dev
Format, encode, decode and inspect code.
18 tools→
Data Converters
Move data between formats instantly.
5 tools→
Generators
UUIDs, passwords, QR codes and identifiers.
22 tools→
Calculators
Math, finance and everyday calculators.
33 tools→
Color Tools
Pick, convert and generate color palettes.
10 tools→
Web & SEO
Tags, metadata and site utilities.
5 tools→
Crypto & Security
Hash, encode and cipher text.
6 tools→
Time & Date
Calendars and date checks.
6 tools→
Finance
Invoices, loans and money tools.
2 tools→
Writing
Markdown and readability.
5 tools→
Unit Converters
Convert any unit to any other.
26 tools→
Social & Content
Captions, hashtags and posts.
8 tools→
Featured workstations
— hand-crafted, the deepest of the empirefeatured
Word Counter — Character, Letter & Word Count
Count words, characters, sentences and reading time. Free online character counter with and without spaces.
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Case Converter
UPPER, lower, Title, camelCase, snake_case and more.
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Lorem Ipsum Generator
Generate placeholder paragraphs, sentences or words.
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Text Reverser
Reverse characters, words or lines of text.
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Slugify
Create URL-safe slugs from any text.
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Find & Replace
Find and replace text with optional regex and case match.
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JSON Formatter & Validator
Format, validate, and beautify JSON online. Catch syntax errors instantly with clear error messages.
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Base64 Encode / Decode
Encode and decode Base64 strings.
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URL Encode / Decode
Percent-encode and decode URLs.
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HTML Escape
Escape and unescape HTML entities.
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JWT Decoder
Decode and inspect JSON Web Tokens.
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Hash Generator — MD5, SHA-1, SHA-256, SHA-512
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes online for free. 100% client-side.
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UUID Generator
Generate v4 UUIDs in bulk.
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Password Generator
Strong, customizable random passwords.
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QR Generator
Create QR codes for text, URLs and more.
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CSV ↔ JSON Converter
Convert CSV to JSON and JSON to CSV.
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Percentage Calculator
What is X% of Y, percent change and more.
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Date Difference
Calculate days between dates, including a business days option that excludes weekends. Free online days between dates calculator.
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Age Calculator
Calculate exact age in years, months and days.
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BMI Calculator
Body Mass Index with category.
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Tip Calculator
Split bills and calculate tips.
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Loan Calculator — Car Payment & Personal Loan Calculator
Calculate monthly car payments, personal loans, and mortgages. See total interest and full payment schedule.
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Unit Converter
Length, weight and temperature conversions.
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HEX ↔ RGB Converter
Convert between HEX and RGB color values.
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Color Picker
Pick a color and copy its formats.
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Gradient Generator
Build CSS linear gradients.
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Image Compressor
Reduce image file size in the browser.
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Image Resizer
Resize images to any dimension.
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Image to Base64
Convert images to data URIs.
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Image Format Converter
Convert PNG/JPG/WEBP in the browser.
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Invoice Generator
Create and print a clean invoice.
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Markdown Previewer
Live preview Markdown as you type.
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Epoch Converter — Unix Timestamp Converter
Convert between Unix epoch timestamps and human-readable dates instantly. Free online epoch converter.
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Text to PDF
Convert plain text into a clean, paginated PDF.
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HTML to PDF
Render HTML markup into a downloadable, paginated PDF.
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Merge PDF
Combine multiple PDF files into one document in your browser.
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Split PDF
Extract pages or split a PDF into smaller files.
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Compress PDF
Re-compress PDF structure and strip metadata to reduce file size.
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PDF to Word
Extract text from a PDF and convert to an editable Word document.
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PDF Editor
Rotate, reorder, and delete pages in a PDF document.
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Background Remover
Remove solid-color backgrounds from images to create transparent PNGs.
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Image OCR
Extract text from images using browser-based OCR (Tesseract.js). Drop image, extract text, copy or download the result.
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Time Zone Converter
Convert a date and time between any world timezones.
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Image Cropper
Crop images to any aspect ratio or dimensions.
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Text Diff Checker
Compare two text blocks side by side and highlight differences — additions, deletions and changes.
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Readability Score
Flesch Reading Ease and grade level of any passage.
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Text Summary
Extractive summary of the key sentences in a passage.
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Writing Prompt Generator
Random creative writing prompts to spark ideas.
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Headline Analyzer
Score a headline and get improvement tips.
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Title Case Converter
Convert text to Title Case.
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CamelCase Converter
Convert text to camelCase.
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Sentence Case Converter
Capitalize the first letter of each sentence.
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Kebab Case Converter
Convert text to kebab-case.
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Constant Case Converter
Convert text to CONSTANT_CASE.
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Alternating Case
Alternate upper and lower case letters.
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Mortgage Calculator with Amortization Schedule
Calculate mortgage payments with a full amortization schedule showing monthly principal and interest breakdown.
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Calorie Calculator — TDEE, BMR & Calorie Deficit
Calculate your BMR (Mifflin-St Jeor), TDEE, and daily calorie deficit for weight loss.