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Color Vision Test This Ishihara-style screening test checks how well you distinguish colors. Look at each plate and enter the number you see hidden in the pattern. ...

Brightness Saturation Complementary Analogous Triadic Split-Comp Tetradic Color Palette WCAG Contrast Base vs Harmony #1 — — Aa Aa CSS Export CSS Custom Properties Copy CSS Generate color palettes → Color Palette Generator Check color contrast → Color Contrast Checker Simulate color blindness → Color Blindness Simulator Related Tools Color Blindness Simulator Color Contrast Checker Color Converter ...

Cooking Unit Converter Volume Weight By Ingredient Recipe Scaler Quick Reference Amount ⇄ Result From Unit Cup (US) Tablespoon (tbsp) Teaspoon (tsp) Milliliter (ml) Liter (L) Fluid Ounce (fl oz) To Unit Cup (US) Tablespoon (tbsp) Teaspoon (tsp) Milliliter (ml) Liter (L) Fluid Ounce (fl oz) 236.59 ml 1 Cup (US) = 236.59 Milliliter (ml) Tip: 1 US Cup = 16 tablespoons = 48 teaspoons = 236.59 ml = 8 fl oz Amount ⇄ Result From Unit Gram (g) Kilogram (kg) Ounce (oz) Pound (lb) To Unit Gram (g) Kilogram (kg) Ounce (oz) Pound (lb) 0.04 oz 1 Gram (g) = 0.04 Ounce (oz) Tip: 1 oz = 28.35 g  |  1 lb = 16 oz = 453.59 g  |  1 kg = 2.205 lb Convert volume to weight (or vice versa) using ingredient density. ...

Enter any credit card number to validate its format using the Luhn algorithm and identify the card network. This tool works entirely in your browser — no data is ever sent to a server. Card Network •••• •••• •••• •••• VALID THRU ••/•• —— Card Number Validate Clear Card Network — Number Length — Luhn Check — IIN / BIN — Generate Test Card Numbers These are mathematically valid numbers used for testing only. They are not linked to real accounts. Generate All Types How the Luhn Algorithm Works Enter a card number above to see a step-by-step breakdown. Important Notice: This tool validates number format only. It cannot verify if a card exists, is active, or has available funds. Do not use real card numbers — for testing, use the generated test numbers above. Related Tools IBAN Validator Password Generator BMI Calculator Compound Interest Calculator Unit Converter

Common Presets Cron Expression Expression: Copy Human-Readable Description Every minute Visual Builder Next 10 Run Times Related Tools Convert Unix timestamps → Unix Timestamp Converter Generate Git commands → Git Command Generator Calculate file permissions → Chmod Calculator Related Articles How to Automate Tasks with AI Step by Step

Cron Expression Generator Common Presets Every minute Every hour Daily at midnight Daily at 9 AM Weekly (Mon midnight) Weekly (Mon 9 AM) Monthly 1st Yearly (Jan 1st) Every 5 min Every 15 min Every 30 min Hourly (9–5 weekdays) Manual Entry / Parse Parse Visual Builder Minute Every minute (*) Every N minutes Specific minute(s) Range Hour Every hour (*) Every N hours Specific hour(s) Range Day of Month Every day (*) Specific day(s) Range Month Every month (*) Specific month(s) Range Weekday Any day (*) Specific day(s) Range * * * * * Copied! Copy Runs every minute. Next 5 Execution Times Related: Format code with JSON Formatter

Build Your Cron Expression Every minute Every hour Daily at midnight Daily at 9 AM Weekly (Sun) Monthly (1st) Weekdays 9 AM Every 5 min Every 15 min Yearly (Jan 1) Minute Hour Day (Month) Month Day (Week) * * * * * Copy Description Every minute Next 5 Execution Times Validate an Existing Expression Validate Clear Build cron expressions → Cron Expression Builder ...

Presets Fade In Fade Out Slide In Left Slide In Right Slide In Up Slide In Down Bounce Pulse Shake Spin Flip Swing Animation Properties Duration (s) ...

Generate CSS aspect-ratio property values for perfectly proportioned, responsive containers — no JavaScript required. CSS Aspect Ratio Generator 16:9 4:3 1:1 21:9 9:16 3:2 2:3 Width : Height Max-width 100% Live Preview 16 : 9 Modern CSS — aspect-ratio Recommended Copy Padding-bottom Hack Legacy Fallback Copy How It Works The modern aspect-ratio CSS property tells the browser to maintain a fixed width-to-height ratio as the element resizes. Set it on any block element and pair with width: 100% for a fully responsive container. ...

Visually design any CSS border-radius shape — from simple rounded corners to pills, circles, blobs, and organic forms. Adjust individual corners, toggle elliptical (horizontal/vertical) values, and copy the ready-to-use CSS in one click. Presets None Pill Circle Blob Squircle Leaf Drop Triangle-ish Preview Width (px) Height (px) Color Controls px % Link corners All corners move together Top-Left H V Elliptical Top-Right H V Elliptical Bottom-Right H V Elliptical Bottom-Left H V Elliptical Generated CSS Copy border-radius: 0; How to Use Choose a preset to start from a known shape, or drag the sliders to build from scratch. Toggle px / % — percentage values are relative to the element’s dimensions; pixels are absolute. Unlink corners to set each corner independently. Enable Elliptical on any corner to separate horizontal and vertical radii for organic shapes. Resize the preview box to see how your radius looks at different aspect ratios. Copy the CSS and paste it directly into your stylesheet. Quick Reference: border-radius Syntax Value Meaning border-radius: 8px All corners equal border-radius: 8px 16px TL+BR / TR+BL border-radius: 8px 16px 24px 32px TL TR BR BL (clockwise) border-radius: 40% 60% / 60% 40% Elliptical (H / V) Related Tools Generate box shadows → CSS Box Shadow Generator Build gradients → CSS Gradient Generator Create Flexbox layouts → CSS Flexbox Generator ...