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Instantly convert colors between RGB, HEX, and HSL. Use the color picker, type a HEX code, or drag the sliders — all values update live. Click any output to copy the CSS-ready value. ...

Build a robots.txt file with a visual editor — no coding required. Add user-agent blocks, allow/disallow paths, set crawl delays, and include your sitemap. Choose from presets to block AI crawlers, apply WordPress defaults, or start fresh. Allow All Block All Block AI Crawlers WordPress Default Standard SEO Clear All Global Settings Sitemap URL + Add User-agent Block Live Preview robots.txt Copy Download .txt Related Tools Generate meta tags → Meta Tag Generator ...

Enter your investment figures below to instantly calculate ROI, annualized return, NPV, IRR, and payback period — no account or sign-up needed. ...

ROT13 / Caesar Cipher ROT13 Cipher Mode ROT13 ROT5 ROT47 Caesar Direction Encode Decode View Normal Brute Force Shift 13 Input Output Copy Output Brute Force — All 25 Caesar Shifts ShiftOutput How It Works ROT13 rotates each letter by 13 positions in the alphabet. Since the English alphabet has 26 letters, ROT13 is its own inverse — applying it twice returns the original text. It is commonly used to obscure spoilers or puzzle answers online. ...

Savings Goal Calculator Calculate how long to reach your savings goal — or how much you need to save each month. ...

0 DEG RAD MC MR M+ M− ⌫ sin cos tan log ln asin acos atan √ ∛ x² x³ xʸ 1/x eˣ π e n! ( ) 7 8 9 ÷ AC 4 5 6 × % 1 2 3 − = 0 . + History No calculations yet. Calculate percentages → Percentage Calculator Convert units → Unit Converter

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Check your screen resolution, viewport size, pixel ratio, and active CSS breakpoints in real time. Resize your window to see live updates. Your Display Info LIVE Screen vs Viewport (Visual) Active CSS Breakpoints Common Resolution Comparison NameWidthHeightRatio Browser & OS Info 📋 Copy All Info Related Tools Resize images to exact pixel dimensions → Image Resizer ...

Screen Time Calculator Find out exactly how much of your life is spent looking at screens — and what you could do with that time instead. ...