CalBox: Calculator

45+ Calculator tools
CalBox is a fast, versatile, and all-in-one calculation toolbox designed for everyday life, shopping, business, study, and work. Replace clutter with a single clean, privacy-focused app that works completely offline.

Whether you need quick basic math, business profit calculations, loan EMI estimates, or instant unit conversions, CalBox delivers accurate results in seconds.

KEY FEATURES & TOOLS:

1. Basic & Quick Math
• Basic Arithmetic Calculator (+, -, ×, ÷)
• Percentage Calculator (Percentage increase, decrease, percentage of total)
• Ratio Calculator (Simplification & proportions)
• Average Calculator (Mean, sum, min, max)

2. Money & Financial Tools
• GST Calculator (Add or remove GST easily)
• Loan & EMI Calculator (Monthly EMI, total interest, and total payable)
• Discount Calculator (Quick shopping discount and final price)
• Profit & Loss Calculator (Profit percentage, loss, and cost margins)
• Split Bill & Tip Calculator (Split expenses among friends with tips)
• Salary & Daily Wage Calculator
• Unit Price Comparison (Compare best deals per unit/kg/liter)

3. Smart Unit Converters
• Length: Kilometer, Meter, Centimeter, Inch, Foot, Yard, Mile
• Weight: Kilogram, Gram, Pound, Ounce, Ton
• Temperature: Celsius, Fahrenheit, Kelvin
• Area: Square Foot, Square Meter, Acre, Hectare
• Volume: Liter, Milliliter, Gallon, Fluid Ounce
• Speed: km/h, mph, m/s
• Digital Storage: Byte, KB, MB, GB, TB
• Time Units: Milliseconds, Seconds, Minutes, Hours, Days

4. Time & Daily Life
• Age Calculator: Accurate age in years, months, and days from Date of Birth
• Date Difference: Count days between any two dates
• Time Difference: Hours and minutes between two time entries
• Fuel Cost & Trip Cost Calculator: Plan mileage and split road trip expenses

5. Work & Study Utilities
• Work Hours & Overtime Calculator: Shift tracking with break deductions
• Target vs Actual Calculator: Measure performance goals and gaps
• Production Rate Calculator: Track units per hour and pacing
• Grade & GPA Calculator
• Exam Marks Percentage Calculator

WHY CHOOSE CALBOX?
• 100% Offline: Works anywhere without an active internet connection.
• Complete Privacy: No account creation, no sign-in required, and no personal data collection.
• Clean & Modern Interface: Designed with Google Material 3 design, supporting both Light and Dark modes.
• Bilingual Support: Easily switch between English and Hindi (हिंदी).
• History Log: Easily review and copy previous calculations.

Simplify your daily calculations with CalBox!