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 tools26810.9K total uses
Categories13Active categories
Most usedJSON Formatter4.1K uses
Recently addedExperiment RandomizerNewest tool
DNS Lookup
Query public DNS records for any domain — A, AAAA, MX, TXT, NS, CNAME, SOA, SRV, CAA, and PTR.
Used 1 times•Updated 17 minutes ago
Subnet Calculator
Calculate IPv4 subnet details from CIDR notation or a subnet mask. Get network, broadcast, and host ranges instantly.
Used 1 times•Updated 2 minutes ago
JWT Decoder
Decode JSON Web Tokens to inspect the header, payload, and claims instantly in your browser — no data leaves your device.
Used 1 times•Updated 1 minute 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 19 minutes ago
Age Calculator
Calculate exact age in years, months, and days from a birth date, with next birthday countdown.
Used 1 times•Updated 10 minutes ago
Loan Calculator
Calculate monthly loan payments, total interest, and a full amortization schedule for any loan.
Used 1 times•Updated 17 minutes ago
Break Even Calculator
Find how many units or how much revenue you need to cover fixed costs and break even.
Used 1 times•Updated 30 minutes ago
Time Calculator
Calculate time differences and add or subtract hours, minutes, and seconds from any clock time.
Used 1 times•Updated 21 minutes ago
Quotation Generator
Create professional price quotations with line items, tax, and validity dates — preview, print, or download as PDF.
Used 1 times•Updated 19 minutes ago
Mole Calculator
Mole calculator free — convert between grams, moles, and particles using molar mass. Instant chemistry stoichiometry in your browser, no signup.
Used 1 times•Updated 21 minutes ago
Percent Yield Calculator
Percent yield calculator free — find % yield, actual yield, or theoretical yield in grams or moles. Stoichiometry lab prep, no signup.
Used 1 times•Updated 18 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 42 minutes ago