JSON Formatter
Format, validate, minify, or sort JSON data with configurable indentation. Instantly check for syntax errors, view node count and nesting depth — free, no sign-up required.
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QuickTools
A growing collection of free, fast tools for developers, designers and everyday power users.
Category Hubs
Browse all categories →🧩5 tools
Developer
Start with JSON Formatter and QR Code Generator.
🔐1 tools
Encoding
Start with URL Encoder / Decoder.
🆔1 tools
Generator
Start with Lorem Ipsum Generator.
📝10 tools
Basic Text
Start with Word & Character Counter and Character Counter.
🔠9 tools
Text Formatting
Start with Remove Extra Spaces Tool and Remove Line Breaks Tool.
✍️10 tools
Grammar & Editing
Start with Grammar Checker and Spelling Checker.
Popular Tools
View full index →QR Code Generator
Generate QR codes for URLs, text, Wi-Fi credentials, vCards, and more. Customise foreground and background colour, error correction level, margin, and download as SVG or PNG — free and instant.
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BMI Calculator
Calculate your Body Mass Index, healthy weight range and ideal weight using metric or imperial units.
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Calorie Calculator
Estimate daily calorie needs based on age, gender, height, weight and activity level using Mifflin-St Jeor, Harris-Benedict or Katch-McArdle formulas.
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Jump Rope Calorie Calculator
Estimate calories burned while skipping rope using body weight, workout duration, jump style, rope type, and optional jump cadence. Review calories burned, calories per hour, total jumps, and practical workload notes.
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HIIT Calorie Calculator
Estimate calories burned during a HIIT workout using body weight, work and rest intervals, rounds, workout style, and optional warm-up and cool-down time. Review total calories, active calories, recovery calories, and session density.
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Workout Calorie Calculator
Estimate calories burned during a workout using body weight, workout duration, workout type, intensity, and optional warm-up and cool-down time. Review total calories, active calories, calories per hour, and MET-based session demand.
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Anxiety Test
Screen for anxiety symptoms with a GAD-7 style 7-question self-assessment. Get an anxiety severity score, interpretation, and practical next steps. Not a medical diagnosis.
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