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: 1⁄xvi", 1⁄8", three⁄16", 1⁄4", 5⁄sixteen", three⁄8", 7⁄16", 1⁄2", nine⁄16", 5⁄8", 11⁄16", 3⁄4", thirteen⁄16", 7⁄eight", 15⁄16", 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 1⁄eight".

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 1⁄2".

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 1⁄4".

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 1⁄8".

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 1⁄16".

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
1⁄16" 0.0625 i.5875
ane⁄eight" 0.125 iii.175
iii⁄16" 0.1875 iv.7625
1⁄4" 0.25 six.35
5⁄16" 0.3125 vii.9375
3⁄8" 0.375 9.525
7⁄16" 0.4375 eleven.1125
1⁄two" 0.5 12.7
9⁄16" 0.5625 14.2875
five⁄8" 0.625 15.875
11⁄16" 0.6875 17.4625
3⁄four" 0.75 19.05
13⁄sixteen" 0.8125 20.6375
7⁄eight" 0.875 22.225
xv⁄16" 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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