Home / Shop Sum Roost
Calculators by task Pocket, desk and scientific calculators, organised around the calculations you need to make.
Choose calculation functions Find the calculator type for the functions you actually need.
Filter & sort + Everyday calculators 10 × 6 × 1 cm; eight-digit LCD; battery powered
Eight digits for everyday arithmetic.
Everyday calculators 17 × 11 × 2.5 cm; twelve-digit LCD; battery powered
An angled desk calculator with memory keys.
Everyday calculators 20 × 15 × 3 cm; twelve-digit LCD; battery powered
Spaced keys and a broad display for desk work.
Scientific calculators 16 × 8 × 1.5 cm; two-line LCD; battery powered
Trigonometry, fractions and scientific notation.
Scientific calculators 17 × 8.5 × 1.8 cm; four-line monochrome LCD; battery powered
Store short calculation routines locally.
Scientific calculators 19 × 9 × 2.2 cm; 240 × 128 monochrome LCD; battery powered
Plot functions on a dedicated handheld screen.
Desk accessories 18 × 10 × 3 cm exterior; 17 × 9 × 2 cm cavity
A zipped protective case for Science S1.
Desk accessories 16 × 13 × 5 cm; fixed 15-degree slope
Lift a desk calculator to a fixed viewing angle.
Before ordering Choose the function set you need. Check the function set and examination rules independently. Keep spare button cells out of reach of children; solar-assisted models still contain a replaceable cell.
Open the buying guide → 
