Free Online Tools for Text, SEO & Calculators
48+ fast tools for text, AI, calculators, developers, and converters. No account required - most tools run client-side; AI tools generate results through our secure AI API.
Featured Free Online Tools
Start with our most-used utilities - sentence counter, random letter generator, discount calculator, CPM calculator, UUID generator, and JSON minifier.
Discount Calculator
Calculate sale price and savings from any original price and discount percent. Instant final price for retail and percent-off deals.
CPM Calculator
Free CPM calculator for cost per thousand impressions, eCPM, ad cost, and reach. Use the CPM formula for display, YouTube, and podcasts.
Word Counter
Free online word counter for essays and articles: live word count, pages, characters, and reading time. Hit exact word limits in your browser.
Sentence Counter
Free online sentence counter with live sentence totals, words per sentence, paragraphs, and reading time for clearer writing.
UUID Generator
Generate UUID v4 and GUID identifiers in your browser. Create one or many random UUIDs for databases, APIs, and testing.
Text to Binary Converter
Convert text to binary and binary back to text. Free ASCII/UTF-8 text to binary converter that runs in your browser.
Pixels to Inches Converter
Convert pixels to inches and inches to pixels at any DPI. Free px to inches calculator for web (96 DPI) and print (300 DPI).
Random Letter Generator
Free random letter generator and alphabet picker. Get one letter or many (A–Z), uppercase, lowercase, or mixed — instantly in your browser.
More Popular Tools
Word counter, character counter, percentage calculator, and other frequently used tools.
Character Counter
Free online character counter with live counts for characters with and without spaces, plus words and lines. Perfect for Twitter/X, Instagram, SMS, and SEO meta description limits.
Password Generator
Generate strong, random passwords in your browser. Choose length (8-64) and mix uppercase, lowercase, numbers, and symbols. Built on secure crypto randomness - nothing is uploaded or stored.
Small Text Generator
Generate small caps, subscript, and superscript Unicode text from normal letters. One input, three copy-ready small text styles for Discord, Instagram, and bios.
Percentage Calculator
Free online percentage calculator: find the percentage of a number, calculate percent change (increase or decrease), and work out what percent X is of Y - with the formula and instant results.
Age Calculator
Free age calculator: enter a date of birth to get exact age in years, months, and days - plus total days lived. Optional age-at date for past or future dates.
BMI Calculator
Free BMI calculator with metric and imperial units. Get your body mass index and WHO adult category instantly - informational only, not medical advice.
EMI/Loan Calculator
Free EMI/Loan calculator for loan amount, annual interest rate, and tenure. Get monthly EMI, total interest, and total payment instantly in your browser.
JSON Minifier & Formatter
Free online JSON minifier and formatter. Minify JSON to shrink payloads or beautify (pretty-print) JSON with 2-space indentation. Validates as you go - no upload required.
HTML Minifier
Free online HTML minifier. Compress and minify HTML by removing comments and collapsing whitespace - smaller files, faster page loads. Runs in your browser, no upload required.
CSS Minifier
Free online CSS minifier. Compress and minify CSS by removing comments and collapsing whitespace - smaller stylesheets, faster page loads. Runs in your browser, no upload required.
JavaScript Minifier
Free online JavaScript minifier. Compress and minify JS by removing comments and collapsing whitespace - smaller files, faster page loads. Runs in your browser, no upload required.
URL Encoder / Decoder
Encode text and URLs to percent-encoding or decode encoded URLs back to plain text. Switch between encodeURIComponent and encodeURI, right in your browser.
HEX to RGB Converter
Convert HEX to RGB (and back) with HSL, CMYK, a tint-shade ramp, WCAG contrast cards, and a CSS token snippet - free online color code converter.
Meta Description Checker & SERP Preview
Free SERP length checker and meta description preview. Live character counter and Google snippet preview - or generate a draft. Fits the 150-160 limit.
Slug Generator
Turn any title or phrase into a clean, SEO-friendly URL slug. Lowercase, strip accents, and choose hyphen or underscore separators - free, instant, and private.
Open Graph Tag Generator
Generate Open Graph and Twitter Card meta tags from a title, description, URL, and image. Free OG tag generator with live HTML and a social preview.
Robots.txt Generator
Generate a robots.txt file with allow-all, block-all, or block-admin presets. Add Allow/Disallow paths and a sitemap URL - free, instant, and private.
AI Meta Description Generator
Generate an SEO meta description with AI from your page title and notes. Aim for a clear 150-160 character Google snippet.
Browse by Category
Find the right utility for text cleanup, generation, calculations, developer work, conversions, SEO, and AI.
Text Tools
Count, clean, and transform text with fast browser-based utilities.
9 tools →
Generator Tools
Generate random letters, tiny text, and other creative strings instantly.
5 tools →
Calculator Tools
Calculate discounts, CPM, percentages, and more for business and ads.
6 tools →
Developer Tools
UUID, Base64, binary conversion, and other dev utilities in your browser.
13 tools →
Converter Tools
Convert pixels, centimeters, inches, and other units quickly.
9 tools →
SEO Tools
Meta tags, URL slugs, keyword density, robots.txt, and SEO utilities for cleaner search snippets.
5 tools →
AI Tools
AI-powered meta description generator for SEO snippets.
1 tools →
All Free Online Tools
Full directory of every tool on ToolsMinify.