How it evaluates expressions

The expression is parsed by a small shunting-yard tokenizer that only accepts numbers, the operators above, and the listed functions and constants. No eval is used, so unknown identifiers are rejected.

Frequently Asked Questions

Is the Scientific Calculator free to use?

Yes, the Scientific Calculator is 100% free to use. There are no subscriptions, no sign-ups, and no hidden fees.

Is my data safe when using the Scientific Calculator?

Absolutely. All calculations performed by the Scientific Calculator happen locally in your web browser. We do not store, track, or transmit your inputs or results to any server.

How accurate is the Scientific Calculator?

Our Scientific Calculator uses industry-standard formulas and methodology. You can view the exact formula and calculation logic used in the methodology section above to verify the math yourself.

Can I use the Scientific Calculator on my mobile phone?

Yes! The Scientific Calculator is fully responsive and works seamlessly on all devices including smartphones, tablets, and desktop computers.