Outils en ligne gratuits
268+ 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 tools26810.8K total uses
Categories13Active categories
Most usedJSON Formatter4.1K uses
Recently addedExperiment RandomizerNewest tool
RSA Decrypt
Decrypt RSA-OAEP JSON payloads with your private key, including hybrid RSA + AES-GCM ciphertext.
Used 1 times•Updated 5 minutes ago
XML to JSON
Convert XML into clean JSON with attribute handling, type parsing, and adjustable indentation — all in your browser.
Used 1 times•Updated 24 minutes ago
Excel to CSV
Convert Excel spreadsheets (XLSX, XLS, ODS) to CSV in your browser, with per-sheet selection and delimiter options.
Used 1 times•Updated 36 minutes ago
JavaScript Beautifier
Format and beautify JavaScript code with indentation, readable blocks, and optional minification.
Used 1 times•Updated 47 minutes ago
BMI Calculator
Calculate Body Mass Index from metric or imperial measurements with health-range guidance.
Used 1 times•Updated 58 minutes ago
Unit Converter
Convert length, weight, temperature, volume, area, speed, time, data, pressure, force, energy, power, torque, density, and flow rate units instantly. Metric and imperial. Free, browser-based.
Used 1 times•Updated 24 minutes ago
GST Invoice Generator
Create GST-compliant tax invoices with CGST, SGST, or IGST, HSN/SAC codes, and PDF export.
Used 1 times•Updated 25 minutes ago
ROI Calculator
Calculate return on investment (ROI), net gain, and annualized ROI from your initial investment and returns.
Used 1 times•Updated 35 minutes ago
Chemical Equation Balancer
Chemical equation balancer free — balance reactions like H2 + O2 → H2O with correct coefficients. Instant stoichiometry in your browser, no signup.
Used 1 times•Updated 5 minutes ago
Solution Concentration Calculator
Solution concentration calculator free — molarity, mass/volume, and dilution (C1V1=C2V2). Chemistry lab prep in your browser, no signup.
Used 1 times•Updated 58 minutes ago
Ideal Gas Law Calculator
Ideal gas law calculator free — solve PV=nRT for pressure, volume, moles, or temperature. atm, kPa, L, K, °C. No signup.
Used 1 times•Updated 6 minutes ago
Boyle's Law Calculator
Boyle's law calculator free — solve P1V1=P2V2 for pressure or volume at constant temperature. atm, kPa, L, mL. No signup.
Used 1 times•Updated 36 minutes ago