أدوات مجانية عبر الإنترنت
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
AES Decrypt
Decrypt AES-GCM or AES-CBC JSON payloads using the passphrase or hex key that was used to encrypt them.
Used 1 times•Updated 26 minutes ago
RSA Encrypt
Encrypt and decrypt text with RSA-OAEP public/private keys, including hybrid mode for longer messages.
Used 1 times•Updated 27 minutes ago
DNS Lookup
Query public DNS records for any domain — A, AAAA, MX, TXT, NS, CNAME, SOA, SRV, CAA, and PTR.
Used 1 times•Updated 4 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 7 minutes ago
Loan Calculator
Calculate monthly loan payments, total interest, and a full amortization schedule for any loan.
Used 1 times•Updated 5 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 17 minutes ago
Time Calculator
Calculate time differences and add or subtract hours, minutes, and seconds from any clock time.
Used 1 times•Updated 9 minutes ago
Invoice Generator
Create professional invoices with line items, tax, and totals — preview, print, or download as PDF.
Used 1 times•Updated 23 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 7 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 9 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 6 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 30 minutes ago