The worksheet generator on this page produces length conversion worksheets with real, freshly randomised numbers — 20 of them per sheet by default — plus the answer key a parent or teacher needs to mark it quickly. Two of the problems on the sheet as it stands are 6 ft = □ in and 7 mi = □ ft — answers 72 and 36,960 — and a new set is one click away.
‘New set of problems’ opens the generator in its own tab. There you can change the problem count and turn the answer key on or off. ‘Print or save as PDF’ opens the print dialog — choose Save as PDF in the printer list to keep the file. The sheet fits US Letter and A4, and the answer key prints on its own page.
The conversions here use inches, feet, yards and miles and cover the units children meet in class rather than obscure ones, as the item 3 ft = □ in on this sheet shows.
Converting between units is multiplication or division by a conversion factor, and the only real decision is which way round. A conversion such as 6 ft = □ in gives 72 because the new unit is smaller, so there must be more of them.
Customary conversions have to be learned as facts, twelve inches to a foot and three feet to a yard, because a problem like 7 mi = □ ft offers no pattern to fall back on.
Metric conversions are all powers of ten, which makes them a decimal place-value exercise as much as a measurement one.
Teachers usually place length conversion worksheets alongside the measurement and data strand for this grade, which is where the skill sits in the majority of US state frameworks.
| # | Problem | Answer | What to check |
|---|---|---|---|
| 1 | 6 ft = □ in | 72 | Watch for: dropping the unit from the answer |
| 2 | 7 mi = □ ft | 36,960 | Check: multiplying when division was needed |
| 3 | 10 ft = □ in | 120 | Look at: losing a factor of ten in metric work |
| 4 | 2 mi = □ ft | 10,560 | Ask about: converting in two steps and rounding in the middle |
| 5 | 3 ft = □ in | 36 | Watch for: assuming metric and customary units interchange neatly |
| 6 | 2 ft = □ in | 24 | Check: using the wrong conversion factor |
A good first problem to do together is 6 ft = □ in, which comes out at 72. Do 6 ft = □ in once with the child narrating, then hand over the pencil and start the clock on the other 20 problems.
Take the first problem on the sheet as it stands, 6 ft = □ in. Work 6 ft = □ in out on paper rather than in your head the first few times, say each step aloud, and check the result against 72 on the key before moving on.
Answers appear next to their question numbers, so a wrong item like 7 mi = □ ft can be found in the key in a second and re-worked while it is still fresh.
The answer key is generated with the worksheet, not written by hand, so it always matches the sheet in front of you — 6 ft = □ in is listed as 72, 7 mi = □ ft as 36,960, and so on down the page.
If the problems look cramped, drop the count from 20 to a smaller number before printing these length conversion worksheets; the font stays the same size and the spacing opens up.
Portrait orientation is what the sheet is designed for. Landscape works but wastes about a third of the paper, so leave the orientation alone unless you have a reason.
Print a sheet of length conversion worksheets, run it for 10 minutes, mark it together, and come back tomorrow for a different set of numbers on the same skill.
→ Free Measurement Conversion Worksheets
Free printable math worksheets from a working math academy director in Korea. Problems come from our own code, not from a published workbook. Every sheet prints on US Letter or A4 with its answer key. All worksheets · Worksheet generator · Korean site
Last updated: 2026-09-13