How to Read the Measurements on a Ruler

What is a Ruler

A ruler is a device with measurement markings on it used for measuring drawing straight lines. Students, engineers, contractors, and makers use rulers for math, construction, compages, sewing, landscaping, and more than.

Co-ordinate to Dictionary.com, a ruler is a strip of wood, metal, or other textile having a straight border and usually marked off in inches or centimeters, used for drawing lines, measuring, etc.[1]

Several types of rulers include wooden or metal rulers, yardsticks, seamstress tapes, tape measures, carpenters rules, and architects scales.

Rulers have measurements in majestic and metric, regal-merely, or metric-only. Get more information on rulers, including different types and uses, or download and print one of our complimentary printable rulers.

How to Employ a Ruler – Standard Majestic Measurements

illustration showing the measurements for all fractions markings on a ruler

The markings on a standard ruler stand for the fractions of an inch. The markings on a ruler from the start to the 1″ mark are: 1xvi", 18", three16", 14", 5sixteen", three8", 716", 12", nine16", 58", 1116", 34", thirteen16", 7eight", 1516", and 1". If the measurement is over 1″, simply use the number on the ruler and add the fraction. For case, if you're 2 ticks past the number iii tick, then the measurement is 3 1eight".

What Practice the Markings on a Ruler Mean

Reading a ruler starts with agreement what all the ticks hateful. The largest ticks on a ruler represent a full inch, and the distance between each large tick is ane″.

Inch markings on a ruler are the longest ticks. There are usually 12 inches on a ruler.


The large ticks in between the inch markings are half-inch markings, and the distance between an inch tick and a half-inch tick is 12".

The large ticks on a ruler between the inch markings represent a half inch.


The mid-sized ticks between the inch ticks and half-inch ticks are the quarter-inch ticks. The distance betwixt a quarter-inch tick and an inch tick or a half-inch tick is 14".

The ticks in the middle of an inch tick and a half inch tick are the quarter inch ticks.


The smaller ticks are the eighth-inch ticks and may be the smallest or second smallest markings on the ruler. The distance between an eighth-inch tick and the other larger ticks is 18".

The smaller ticks are for an eighth of an inch. On some rulers the eighth-inch ticks are the smallest ticks.


The smallest ticks on a ruler are the sixteenth-inch ticks. The distance between a sixteenth-inch tick and the other larger ticks is 116".

The smallest ticks on a ruler are the sixteenth-inch ticks

How to Employ a Metric Ruler – Metric Measurements

Metric rulers have centimeter and millimeter markings. The larger markings these correspond a centimeter.

The larger ticks on a metric ruler represent centimeters


The smaller ticks on a metric ruler represent a millimeter. There are 10 millimeters in a centimeter, and so there are nine millimeter ticks between each centimeter tick.

The smallest markings on a metric ruler are for millimeters

Watch for More Data on Reading a Ruler

Ruler Measurements: Inch Fractions on a Ruler

These are the measurements and fractions that are on a ruler and the decimal and millimeter metric equivalents. If yous need to convert larger inch fractions to decimal or metric, use our inch fraction calculator.

Inch fractions down to 1/64"

Fraction, Decimal, and Millimeter Equivalent Measurements

Ruler fraction measurements converted to equivalent decimal and millimeter metric values.
Fraction Decimal Millimeters
116" 0.0625 i.5875
aneeight" 0.125 iii.175
iii16" 0.1875 iv.7625
14" 0.25 six.35
516" 0.3125 vii.9375
38" 0.375 9.525
716" 0.4375 eleven.1125
1two" 0.5 12.7
916" 0.5625 14.2875
five8" 0.625 15.875
1116" 0.6875 17.4625
3four" 0.75 19.05
13sixteen" 0.8125 20.6375
7eight" 0.875 22.225
xv16" 0.9375 23.8125
1″ 1 25.4

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Source: https://www.inchcalculator.com/how-to-read-a-ruler/

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