Calculator Pro

Calculator Pro is a fast, clean, ad-free calculator with three tools in one — a standard calculator, a full scientific calculator, and a live currency & unit converter — wrapped in a modern Material design with light and dark themes.

NO ADS. NO TRACKING. NO ACCOUNT. Just a calculator that works.

STANDARD CALCULATOR
• Big, readable display with a live result that updates as you type
• Running history tape — tap any past result to reuse it
• Memory keys (MR, M+, M−, MC)
• Thousands separators and smart number formatting

SCIENTIFIC CALCULATOR
• Every function on one screen — no hunting through menus
• sin, cos, tan and their inverses (sin⁻¹, cos⁻¹, tan⁻¹)
• ln, log, eˣ, 10ˣ, square, power, square root, reciprocal, factorial
• Brackets for building expressions like sin(30) and (2+3)×4
• DEG / RAD toggle for trigonometry

CURRENCY & UNIT CONVERTER
• Live exchange rates for major currencies (USD, EUR, GBP, JPY, INR, AUD)
• Two-way editing — type either side and the other updates instantly
• Set your own custom rates when you need them
• Length, Mass, Temperature, Volume and Speed conversions too
• Works offline using the last fetched rates

DESIGNED TO FEEL GREAT
• Clean Material 3 interface with smooth, tactile keys
• Automatic light & dark themes (or pick your own)
• Remembers your last screen, theme, and memory value
• Lightweight and quick to open

Your privacy matters: Calculator Pro collects no personal data and shows no ads. The only network use is fetching currency exchange rates.