Do you know your millimetre from your metre, or your acre from your hectare?
If you fancy testing your knowledge of units of measurement, try our 15-question quiz and see how much you know.
You’ll have to be precise with your answers – there are questions on pints, centimetres, hectares... and horses.
If you managed to get full marks, share your results with friends and family!
Can’t get enough trivia action? Check out our dedicated Yahoo Quizzes page for more brainteasers! There are quizzes on music, geography, history, entertainment and plenty more.