Free Online Calculator - Basic & Scientific

Simple Calculator uses guide step by step

Our online calculator runs directly in your browser, meaning everything happens instantly and privately.
You can use it with your mouse, touch screen, or even your keyboard — and your results update live as you type.

There are two main modes:

Basic Mode – Simple Everyday Calculations

This mode is perfect for daily math or quick tasks like budgeting, bills, or study work.

You can:

• Add, subtract, multiply, and divide

• Use the percentage and decimal functions

• Switch signs (positive or negative)

• Clear or reset with a single click

🧭 Example:
Type 250 + 45 × 3, press =, and see your result instantly.

Basic mode is clean, minimal, and perfect for performing quick arithmetic without distractions. This simple calculator for students helps solve daily arithmetic, budgeting, or class assignments quickly — right inside your browser, on desktop or mobile.

Scientific Mode – Advanced Mathematical Functions

For students, researchers, or professionals, Scientific Mode gives you full control.
Once you turn on the Scientific switch, new keys appear — unlocking advanced math power.

If you need a scientific calculator with sin cos tan and log functions, this mode gives you all those features instantly.

You can perform:

• Trigonometric functions — sin, cos, tan

• Logarithmic and exponential operations — log, ln, x², x³, xʸ

• Roots and powers — √, ∛, π, and e

• Memory calculations — MC, MR, M+, M−

⚡ Pro Tip:
You can mix functions too — for example: sin(30) + log(10) or √(9) × π.

Everything runs instantly, without loading or lag, and you can copy the result with one click.

Why People Love This Calculator

• No download or login needed

• Works perfectly on desktop, tablet & mobile

• Switch between Basic & Scientific anytime

• Privacy-safe — nothing is stored or shared

• Instant results, even offline after load

This calculator is built for everyone — from students and freelancers to finance professionals. Lightweight online calculator tool — no installation or sign-up required. Students and professionals also use our time converter to calculate schedules and deadlines quickly.

Pros and Cons

✅ Pros

• Fast and accurate performance

• Works on all devices and browsers

• Mobile-friendly layout

• Scientific tools built in — no separate app needed

• Copy results instantly

• Modern and easy-to-use interface

❌ Cons

• Does not support graph plotting

• No formula history (clears after reload)

• Offline mode limited to current session

Explore more tools like the online alarm clock or time converter for better productivity.

Conclusion

The Time of Info Free Online Calculator is more than just a math tool — it’s your all-in-one problem solver.
Whether you’re calculating daily expenses or solving trigonometric equations, it adapts to your need instantly.

👉 Try it now — switch between Basic ↔ Scientific, explore the features, and make every calculation faster and easier.