Find the whole number.
Start with the last numbered inch or centimetre before the mark. That is your starting point, not your final answer.
Build the habitTHE MEASUREMENT WORKSHOP
Get comfortable with the little lines. Practice reading a ruler or tape measure in inches, fractions, centimetres and millimetres.
One whole inch + three quarter-inch spaces.
Count the spaces, not the lines.
01 / HANDS-ON PRACTICE
No timer pressure.
No account needed.
Read from zero to the orange pointer.
Using the steps is welcome. It is recorded as a guided question.
SET COMPLETE / GOOD WORK
First-try accuracy includes guided answers. Guided questions are counted separately. Retries do not rewrite an earlier score.
YOUR LOCAL LOGBOOK
Your progress stays in this browser.
Saved only on this device. No score is uploaded.
02 / KEEP THESE IN YOUR POCKET
Start with the last numbered inch or centimetre before the mark. That is your starting point, not your final answer.
Build the habitOn a sixteenth-inch scale, four spaces make 4/16 = 1/4 inch. On a metric ruler, ten 1 mm spaces make 1 cm.
Make fractions familiarThe number needs its unit. A reading of 25 mm is 2.5 cm. Neither is 25 inches. Check the scale before every measurement.
Get to know metric03 / PRACTICE WITH A PURPOSE
This is reading practice, not an on-screen measuring tape. The diagram changes size to fit your device. Use a real measuring tool for a real object.
Practical measurement tipsChoose halves before quarters, eighths and sixteenths. Use five-question sets while you learn, then ten or twenty when the marks start to look familiar.
“Read the mark” asks you to name a position. “Place the mark” asks you to find one. Switching between them checks whether you recognise the scale, rather than memorise an answer.
There is no countdown. Take the time to count spaces and simplify fractions. Try a missed mark again, then explain the reading to yourself.
04 / QUICK ANSWERS
Yes. The inch and metric scales teach the numbered marks and subdivisions used on many rulers and tape measures. The exercises do not simulate every tape feature, such as a moving end hook, stud markings or architectural scales.
Use a slash for fractions: 3/8. Put a space between a whole number and its fraction: 2 3/8. Decimals are also accepted; 2.375 means the same thing. Enter only the number, because the unit is selected separately.
The questions use exact marked positions. For example, 1/16 inch is exactly 0.0625 inch. A rounded answer such as 0.06 is close, but it is not the same mark. Fractions avoid rounding.
No. Its size changes with your screen, zoom and layout. It is deliberately a practice diagram, not a calibrated physical ruler.
If your browser permits local storage, it saves your overall answered count, first-try accuracy, best streak, settings and six recent completed sets on this device. There is no account or cross-device sync. You can clear it above.