Online RulerPrint a Ruler on US Letter
Select US Letter in the print window and use Actual Size or 100% scaling with Letter paper loaded. Check the preview for the complete ruler marks, then measure the printed 10 cm test line with a physical ruler. If the length differs, fix the settings and print again.
- Your print window may list US Letter as Letter.
- The AR Ruler page includes a 6 in scale and a 15 cm scale, each sized independently for printing.
- The 10 cm test line gives you a physical check on the finished sheet.
- Load US Letter paper and select the printer that will produce the sheet. Open the print window for the printable ruler.
- Choose Letter under Paper Size. If you can select a tray, pick the one that holds the Letter paper.
- Select Actual Size or type 100% in the scale field. Clear any option to fit the page to the printable area.
- Check that both zero marks, both far ends, and the full test line appear in the preview. Print one copy.
- Lay a physical metric ruler along the test line. Match its zero to one endpoint and look for 10 cm at the other.
Check the tray choice
A printer with several trays may pull from a different tray than the one you loaded. Look for Paper Source in the print window or printer settings. If the printer asks for another paper size, pause the job and check which size the job requests and which size the printer expects in that tray.
Check both print panels
Some browsers show their own print settings and also offer a system print window. Look for paper size and scaling in whichever window you use. If the job opens a separate printer panel before printing, check there for a fit or resize option. Measure a new copy after you make a change.
Read the inch marks
Place the object next to the printed inch scale and align one end with zero. Look straight down at the other end so you can tell which tick it meets. If the end falls between marks, record it as between those marks or estimate the fraction if the work allows it.
Can I measure in centimeters on Letter paper?
Yes. The 15 cm scale is on the same page as the inch scale. Match the object to the zero on the centimeter scale.
Can I trim the ruler from the sheet?
Yes. Check the test line first, then leave enough paper around the scale to keep every mark visible. Start each measurement at the printed zero.
Can I check the inch scale directly?
Yes. If you have a physical inch ruler, line up the two zero marks and compare the printed 6 in mark with the same mark on the physical ruler.