📐 Unit Swap
Change feet to inches, meters to centimeters!
Answer 10 questions and earn up to 3 stars. Pick a level to start!
Free converting units of length, time, and weight practice for kids
Unit Swap gives kids fun, focused practice with converting units of length, time, and weight (Grades 4-5). Change feet to inches, meters to centimeters! Each round has a fresh set of questions, so there's always something new to try.
You can turn on voice narration to hear each question read aloud — helpful for younger or still-reading learners. Progress and stars are saved on your device only.
How to play
Read the question, tap the answer you think is correct, and watch for the green check. Finish the round to earn up to three stars, then play again to beat your score or explore more games.