CalcPro: All-in-One Calculator & Converter

About

CalcPro is a powerful all-in-one calculator and converter suite for your browser. Always one click or keyboard shortcut away without leaving your current tab.

◆ CALCULATOR MODES
• Standard - Everyday arithmetic with a clean, responsive keypad
• Scientific - Trigonometry, logarithms, exponents, factorials, and constants
• Date Calculator - Find the difference between two dates or add/subtract days
• Percentage Calculator - Quickly solve "X% of Y", "X is what % of Y", and percentage change

◆ CONVERTER
Convert between 16 built-in categories:
• Currency - Live exchange rates updated automatically
• Distance, Weight, Temperature, Speed, Area, Volume
• Time, Frequency, Pressure, Energy, Power, Fuel Economy
• Data Storage, Angle, and more

◆ CUSTOM CONVERTERS
Create your own conversion categories using simple equations like "24 apples = 15 oranges". Define unlimited custom units for any use case: cooking, crafting, gaming, or work.

◆ SMART FEATURES
• Calculation history - Searchable, filterable, with one-tap reuse
• Memory functions - M+, M-, MR, MC for storing intermediate results
• Right-click to calculate - Select any number or expression on a page, right-click, and send it straight to CalcPro
• Keyboard shortcut - Press Alt+C (or Cmd+Shift+C on Mac) to toggle CalcPro instantly
• Persistent state - Your settings, history, and custom converters are saved across browser sessions

◆ DESIGNED FOR PRODUCTIVITY
CalcPro opens alongside any webpage without covering your content. No popups, no new tabs. Just a fast, focused calculator always within reach.