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Calculators
Age Calculator
Calculate an exact age between two dates in seconds.
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All tools
Search, filter, and sort a growing collection of focused utilities designed to make everyday work faster and simpler.
Popular
Calculators
Basic Calculator
Add, subtract, multiply and divide with history and keyboard input.
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Health & Fitness
BMI Calculator
Work out your body mass index in metric or imperial units.
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Color & Design
Color Palette Generator
Build harmonious palettes from any base color.
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Color & Design
Color Picker
Pick any color and read its HEX, RGB and HSL values instantly.
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Date, Time & Productivity
Countdown Timer
Count down days, hours, minutes and seconds with pause and restart.
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Education
GPA Calculator
Calculate your GPA from subjects, credit hours and letter grades.
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Image
Image Compressor
Make image files smaller without sacrificing visual clarity.
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Business
Invoice Generator
Create a clean invoice with items, tax and discount, then print or save as PDF.
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Developer
JSON Formatter & Validator
Pretty-print, minify and validate JSON with clear error details.
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Website / SEO Tools
Meta Tag Generator
Generate title, description, keywords, canonical and Open Graph meta tags.
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Security & Password
Password Generator
Create strong, customizable passwords for safer accounts.
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