Unit conversion
Use the exact factor, then check the result against an anchor you already know.
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Example
Example
Example · Easy
Everyday amounts such as a 180 °C oven and a 100 km drive · Answers to one decimal place
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6 questions · No time limit
- Questions answered
- 0 / 6
- Active time
- 0:00
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Read the quantity, convert it to the unit the question names, and choose one of the five results.
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Keep two known pairs for each set of units, and use them to check every answer.
On by default unless you turn it off. Saved choices are kept. Shares starts, completions, replays and error categories. For ChatGPT visits, starts and completions may include the first QuickenBrain page and country. No answers, drawings or names.
How this data is usedHelp
Every question gives one quantity and asks for it in another unit. The factors are the exact definitions: 1 inch is 2.54 cm, 1 foot is 0.3048 m, 1 mile is 1.609344 km, 1 pound is 0.45359237 kg, and 1 US gallon is 3.785411784 L. Temperature uses Fahrenheit = Celsius × 9/5 + 32. The options are five results a step apart. Work the conversion out before you read them.
Each round has six questions and no time limit. Choosing an answer locks it. Review the steps, then move to the next question. Finish all six to save the round. Active time includes reviewing the steps, but does not count time when this page is hidden. Speed does not affect your score.
Use Tab and Enter or Space to choose an answer. The number keys also select answers, except when another control is focused. After an answer, Enter goes to the next question.
Original practice puzzles, not a standardized assessment.
About this practice
Learn a method
Convert with anchorsUse the exact factor, then check the result against an anchor you already know.
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On by default unless you turn it off. Saved choices are kept. Shares starts, completions, replays and error categories. For ChatGPT visits, starts and completions may include the first QuickenBrain page and country. No answers, drawings or names.
How this data is used