所有在线工具

File Converter changes images between JPG, PNG, and WebP and turns images or text files into PDF, all in your browser. It is a fast, private way to switch formats without installing software or uploading your files anywhere.

Minify CSS code.

Calculate cubic yards for pouring slabs and driveways.

Test your internet connection speed directly in the browser. Measure download speed, upload speed, latency (ping), and jitter with animated gauges. Works on mobile and desktop — no app required.

Format SQL queries.

Create countdown timers.

Online stopwatch.

RGB to HEX Converter turns red, green, and blue color values into a HEX color code, and also shows the HSL equivalent and a live color preview. Use the sliders or type exact values to find the perfect color for your website, design, or CSS. It is a fast, free tool for developers and designers that works entirely in your browser.

Coin Flip is a free online coin flipper that gives you a fair, random heads or tails result with a single click. Flip once to make a quick decision, or flip hundreds of times at once to see the running heads/tails tally. It is perfect for settling debates, games, and probability demonstrations, and it works instantly in your browser.

Generate CSS gradients visually.

Record your screen online.

Estimate property transfer duty tax in Australia.

Verify the mathematical checksum of a KSA Iqama.

Margin Calculator helps you price products and measure profitability by computing profit, profit margin, and markup from a cost and selling price. It is essential for retailers, freelancers, and e-commerce sellers who need to understand their numbers at a glance. Enter your cost and price and the results update instantly in your browser.

Convert Unix timestamps.

Calculate tips and split bills.

Verify SIREN and SIRET codes using the Luhn Algorithm.

Verify a 13-digit NZBN using the GS1 Checksum.

File Compressor bundles multiple files into a single ZIP archive so they are easier to send and store. Combine documents, images, and more into one tidy download. Compression runs in your browser, keeping your files private.

Generate UUIDs online.

Generate random numbers.

Generate color palettes.

Calculate IGST, CGST, and SGST for your products.

Convert historic Varas Cuadradas into modern area metrics.