Calculus — Apple-Style Calculator

About

Calculus brings the elegance of Apple's iOS Calculator directly to your Chrome toolbar — redesigned with a stunning Liquid Glass aesthetic inspired by iOS 18.

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✦ BEAUTIFUL BY DESIGN
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Every pixel is crafted with care. Calculus features a translucent frosted-glass interface with animated ambient color orbs, iridescent depth layers, and soft specular highlights — the same visual language Apple uses across its latest operating systems. It doesn't just work beautifully. It looks beautiful.

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⌨ FULL KEYBOARD SUPPORT
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Never touch your mouse. Type numbers and operators directly from your keyboard:
• 0–9 → Number input
• + − * / → Arithmetic operators
• Enter or = → Calculate result
• Esc → Clear
• Backspace → Delete last digit
• % → Percentage

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∞ SMART EXPRESSION DISPLAY
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See your full calculation expression displayed above the result in real time — just like the native iOS Calculator. No more guessing what you typed.

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⚡ INSTANT & LIGHTWEIGHT
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Calculus opens in milliseconds directly from your toolbar. It requires zero permissions, makes no network requests, collects no data, and stores nothing. Pure HTML, CSS, and JavaScript — no frameworks, no bloat.

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🔢 COMPLETE CALCULATION SUPPORT
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• Addition, subtraction, multiplication, division
• Percentage calculations (context-aware: 15% of 200 = 30)
• Positive/negative toggle (+/−)
• Decimal point input
• Chained operations with live operator highlighting
• Division-by-zero error handling
• Scientific notation for very large and very small numbers
• Dynamic font scaling for long results

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🔒 PRIVACY FIRST
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Calculus requests zero browser permissions. It does not access your tabs, browsing history, clipboard, or any personal data. What you calculate stays entirely on your device.

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TECHNICAL DETAILS
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• Manifest Version: 3
• Popup size: 320 × 520 px
• Permissions: None
• Compatible with Chrome 88+, Edge 88+, Brave, and Opera
• No external scripts or CDN dependencies

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Whether you need a quick tip calculation, a currency conversion, or just want a calculator that matches the quality of your workflow — Calculus is the one you've been waiting for.

Add it to Chrome. It's free.