About this free online maths calculator

GCSE Maths Calculator brings arithmetic and scientific calculations into your browser. Work with fractions, roots, powers, trigonometry and logarithms, then switch between exact and decimal answers. It is built for GCSE revision and is useful whenever you need to check a calculation.

Open the calculator How to use it

Made by Tope Teaches Maths. Start calculating straight away, with no account or app installation. Choose a colour theme in Display settings. Desktop users can also choose a text size; phones and tablets keep the Standard size.

Scientific calculator functions

Use arithmetic, powers, square and nth roots, standard form and logarithms. Calculate sin, cos and tan in degrees or radians, with inverse functions when you need to find an angle.

Exact answer support

Where supported, answers are simplified into fractions, surds, rationalised square roots and selected expressions involving . Switch to a decimal when you need an approximation.

Works on phones

The calculator shrinks proportionally to fit a phone, tablet, laptop or desktop screen. A fixed Standard text size keeps handheld buttons readable and properly spaced. Desktops offer three text sizes. All devices offer colour themes and your own Custom palette.

Maths you can calculate

Fractions Surds Indices Standard form Trigonometry Logarithms Exact answers

What you can use it for

Checking fraction arithmetic and mixed calculations.
Simplifying square roots and rationalised surd answers.
Testing trigonometry in degrees or radians.
Checking powers, indices, logarithms and standard form.
Comparing decimal answers with exact simplified answers.
Continuing from the previous answer with Ans.

Common questions

What is the GCSE Maths Calculator?

GCSE Maths Calculator is a free online scientific calculator for school and everyday maths. It handles arithmetic, fractions, square roots, powers, standard form, trigonometry and logarithms, with simplified exact answers where supported.

Is it only for GCSE maths?

No. The name reflects its GCSE roots, but anyone can use the calculator for arithmetic and scientific calculations. It is useful for homework, teaching, revision and everyday maths.

Is the online calculator free to use?

Yes. Open the calculator in your browser and start calculating. There is no account to create and no app to install.

Can the calculator simplify surds and fractions?

Yes. The calculator is designed to show exact simplified answers where supported, including fractions, square roots, rationalised surds and selected pi-root expressions.

Does the calculator work on mobile?

Yes. The calculator fits phones, tablets, laptops and desktop computers. Choose a colour theme or create a Custom palette. Phones and tablets use Standard text; desktop computers also offer larger text sizes. Your display preferences are saved in the current browser.

Learn how to use the scientific calculator with worked examples.

Created by a mathematics teacher

Dominic Tope is the mathematics teacher behind Tope Teaches Maths. This calculator brings clear mathematical notation and useful exact answers to homework, revision and classroom demonstrations.

For help with a particular calculation, read the scientific calculator guide, GCSE calculator-skills guide or fractions and surds guide.