Price guide · October 2026 · prices checked
Calculators under £20
We compare 13 calculators under £20, each sold by at least two UK shops (6 shops in all). The cheapest today is the Casio MS-80E 8 Digit Tax /Euro Calculator Metal Cover at £8.
Lowest price
Casio MS-80E 8 Digit Tax /Euro Calculator Metal Cover
£8
Most shops compared
Casio SL-320TER+-WK-UP Pocket Calculator 12 Digits
5 shops · from £8
Price history
Each product page shows its price history and whether today's price is good.
All 13 compared
Questions
What is the cheapest calculator under £20?
Today it's the Casio MS-80E 8 Digit Tax /Euro Calculator Metal Cover at £8 from Office Stationery. Prices are checked daily, so it can change.
Which shop is cheapest for calculators under £20?
Office Stationery has the lowest price on 13 of the 13 we compare.
How do you choose these?
Every calculator listed here is sold by at least two UK shops we compare, has a cheapest price between £7 and £20, and has a real product photo. They're ordered by how many shops sell them, then price. We don't test products; this is a price comparison, and nobody pays to be included.