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405+ free online tools for PDF, images, SEO, developers, color, and productivity. Fast, browser-based, and private — no signup, no installs, no limits. Search above or browse by category below.
Total tools405Available free tools
Categories15Active categories
Most usedCSV to ExcelPopular right now
Recently addedInterval Music RepeaterNewest tool
SQL Minifier
Minify SQL queries by removing extra whitespace and optional comments, with keyword casing controls.
BMI Calculator
Calculate Body Mass Index from metric or imperial measurements with health-range guidance.
Macro Calculator
Plan daily protein, carbs, and fat from your calorie target or estimated needs, with per-meal macro splits.
Quotation Generator
Create professional price quotations with line items, tax, and validity dates — preview, print, or download as PDF.
Scientific Calculator
Perform basic and scientific calculations with trigonometry, logarithms, powers, and degree or radian mode.
Grid Generator
Configure CSS Grid layouts with live preview and copy-ready CSS, inline styles, and Tailwind classes.
Phylogenetic Tree Generator
Build phylogenetic trees from distance matrices, aligned DNA sequences (UPGMA), or Newick strings — SVG diagram, ASCII tree, and export. Free, browser-based.
Microliter Converter
Convert microliters (µL) to milliliters, liters, nanoliters, cubic centimeters, and more. Instant lab volume conversions with all units shown at once. Free, browser-based.
Electron Configuration Generator
Electron configuration generator free — full and noble-gas notation for any element. Aufbau rules + exceptions. No signup.
CSS Animation Generator
Build @keyframes animations with live preview and copy-ready CSS, class rules, and animation shorthand.
SERP Snippet Preview
Free Google SERP snippet preview — see how your title and meta description look on desktop and mobile search. Check length, truncation, and CTR tips. No signup.
Readability Checker
Analyze text readability with Flesch, Flesch-Kincaid, SMOG, Coleman-Liau, ARI, and Gunning Fog scores.