Question 1

What's the difference between a financial calculator and a scientific calculator?

Accepted Answer

A financial calculator is designed for business and accounting tasks — it handles NPV, IRR, amortisation, profit margins, and currency conversion, but won't do trigonometry or logarithms. A scientific calculator does the opposite: it's built for maths, physics, and engineering, with trigonometric functions, statistical modes, and often matrix operations, but lacks dedicated financial functions. Buying the wrong type is a common mistake — an accountant has no use for a sine function, and an engineering student can't calculate loan amortisation on a basic scientific model.

Question 2

Is a solar-powered calculator reliable enough for daily office use?

Accepted Answer

Yes — solar-hybrid calculators (which combine a solar cell with a backup battery) are entirely reliable for office use under normal lighting conditions. The solar cell handles day-to-day operation, and the battery kicks in only in very low light or when the calculator is stored away. Most mid-range Casio and Canon desktop models use this system, and it's genuinely the most practical power option for a calculator that sits on a desk all day. Pure battery-only models are fine for occasional use, but solar-hybrid is the smarter long-term choice.

Question 3

Which calculator brands are approved for UK GCSE and A-level exams?

Accepted Answer

Casio and Texas Instruments are the most widely used brands in UK schools and are generally approved for GCSE and A-level examinations, but the specific model must comply with the exam board's rules — not just the brand. Ofqual-compliant calculators must not have symbolic algebra (CAS) capability, must not be able to store text, and must have their memory cleared before the exam. Always check the specific model against your exam board's (AQA, Edexcel, OCR) approved list before purchasing. The Casio fx series is the most commonly recommended for secondary school use.

Question 4

Do printing calculators still make sense in 2026, or are they outdated?

Accepted Answer

Printing calculators remain genuinely useful for anyone who needs a physical audit trail of their calculations — accountants, bookkeepers, and cashiers in particular. The paper tape provides a record that can be checked, annotated, and filed, which spreadsheet software doesn't replicate in the same tactile way. Models like the Casio HR-150RCE and HR-200RCE are still actively sold and well-reviewed. They're not for everyone — they're bulky, require thermal roll replacements, and cost more than equivalent non-printing models — but for professional financial work, they earn their place on the desk.

Question 5

Are cheap calculators from budget brands worth buying, or should I stick to Casio?

Accepted Answer

Budget brands like Genie are worth buying for light, everyday use — basic arithmetic, home budgeting, or a spare calculator for a drawer. At under 10 £, you're not getting multi-line displays or robust key mechanisms, but for occasional use they're perfectly functional. Where we'd caution against going budget is in professional or high-volume contexts: poor key response on cheap membrane keyboards causes data-entry errors that cost far more than the saving on the calculator itself. For anything beyond basic arithmetic, spending a little more on a Casio or Canon mid-range model is the sensible call.

Question 6

What does 'floating decimal' mean on a calculator, and does it matter?

Accepted Answer

Floating decimal means the calculator automatically positions the decimal point to show as many significant figures as possible — the decimal 'floats' to wherever it's needed. This is the default on most basic calculators. The alternative is a fixed decimal setting, where you lock the display to a set number of decimal places (typically 0–6). For financial and accounting work, fixed decimal at two places is far more practical — it keeps all your figures in pounds and pence without manual rounding. If you're doing VAT calculations or reconciling accounts, a calculator with selectable decimal places is worth seeking out.

Question 7

What should I watch out for when buying a calculator online?

Accepted Answer

The main pitfall is buying a model designed for a different market — some calculators sold on UK marketplaces are grey imports configured for European tax rates or currency symbols that don't match UK usage. Check that the model number ends in a UK-specific suffix (Casio often uses 'EM' for European/UK models) and that the retailer is a recognised UK seller. Also watch for listings that show a low headline price but charge separately for a mains adapter that the calculator requires. Comparing across multiple retailers on a price comparison site before buying is the simplest way to avoid overpaying — prices on identical models can vary significantly between Amazon, Currys, and specialist office suppliers.

Calculators Price Comparison

Canon LS-102 TC calculator Desktop Basic Black, Metallic

Canon TS-1200TSC calculator Desktop Basic Metallic

Canon LS-122TS calculator Desktop Display Grey

Sharp EL-334F calculator Desktop Financial Grey

Sharp EL-310AN calculator Desktop Display Black, White

Casio HR-8RCE-BK calculator Desktop Printing Black

Canon MP120-MG-es II calculator Desktop Printing White

Sharp EL-240SA calculator Pocket Basic Blue, Grey

Casio MS-80E calculator Pocket Financial Blue

Casio MS-120EM calculator Desktop Display Blue

Casio MS-100EM calculator Desktop Display Multicolour

Casio DH-12ET calculator Desktop Basic Black

Casio DF-120EM calculator Desktop Display Blue

Canon AS-120 II calculator Desktop Display Black

Casio FX-82CE X calculator Desktop Scientific Black

Casio FX-82DE CW calculator Pocket Scientific Black

Calculators Price Comparison