Calqo - Scientific Calculator

Calqo is a full-featured scientific calculator designed for students, engineers, and everyday use. It combines a clean, modern interface with powerful mathematical functions and handy utility tools — all in one app.

SCIENTIFIC CALCULATOR
Perform basic arithmetic or switch to scientific mode for advanced calculations. Supports trigonometric functions (sin, cos, tan), hyperbolic functions (sinh, cosh, tanh), inverse functions, logarithms (log, ln), square root, cube root, factorial, power, absolute value, modulo, permutations (nPr), combinations (nCr), reciprocal, and more. Toggle between degrees and radians with a single tap.

CALCULATION HISTORY
Every calculation is saved automatically. Browse your history, tap to reuse a past result, or clear it when you're done. Never lose track of your work again.

MEMORY FUNCTIONS
Store, recall, add to, or clear values from memory using M+, M−, MR, and MC — just like a traditional scientific calculator.

UNIT CONVERTER
Convert between units across seven categories: length, weight, temperature, volume, speed, area, and time. Quick, accurate, and easy to use.

TIP CALCULATOR
Enter your bill amount, choose a tip percentage, and split the total between friends. Simple and fast.

DATE CALCULATOR
Find the exact difference between two dates in years, months, and days. Add or subtract days from any date to find a future or past date.

BMI CALCULATOR
Check your body mass index by entering your weight and height. Instantly see your BMI value and health category.

AGE CALCULATOR
Enter a birth date to find the exact age in years, months, and days.

THEMES & CUSTOMIZATION
Choose between light, dark, or system-default themes. Adjust decimal precision, and toggle haptic and sound feedback to match your preference.

DESIGNED FOR EASE OF USE
- Auto-scaling display that adjusts text size for long expressions
- Swipe left on the display to delete the last entry
- Copy results with a tap, paste from your clipboard
- Smooth button press animations
- Landscape mode support
- Full accessibility with screen reader labels on all buttons

Calqo is free, lightweight, and works offline. No ads, no unnecessary permissions — just a calculator that does everything you need.