Hopi News
Clear, useful writing on the money, health, measurement and everyday-number questions our tools answer. Researched, sourced and written by the person who builds Hopi.
Fiscal drag: how frozen tax thresholds quietly raise your bill
You got a pay rise and kept less of it than you expected. The thresholds that decide how much tax you pay have not moved since 2021, and that stealthy freeze is doing a lot of work.
A-level results: the percentage-point trap in the headlines
Top grades edged up again this year, to 28.5 per cent of entries. Call that a rise of 0.2 per cent and you have made the classic results-day error. Here is what the numbers really say.
How many calories do you actually burn in a day?
The famous 2,000 a day figure is an average dressed up as a rule. Your real number depends on your size, your age and how much you move, and the maths behind it is refreshingly simple.
Why Britain still weighs itself in stones
The country buys petrol in litres and butter in grams, yet steps on the bathroom scales and reads off a number in stones and pounds. Here is how one stubborn unit survived metrication.