How Many Inches in a Foot? The Simple Answer Plus a Handy Chart

The foot and the inch are two of the most common units in the imperial and US customary measurement systems, and they show up everywhere from tape measures to building plans to the height on your ID. Knowing that one foot holds exactly 12 inches is one of those small facts that quietly makes everyday math easier. This guide gives you the direct answer, a full conversion chart, the simple formula, worked examples, and the mistakes that trip people up.

How many inches are in a foot?

One foot equals 12 inches. This is a fixed, exact relationship, not a rounded estimate. The inch and the foot are both defined against the metre in modern standards, where one inch is exactly 2.54 centimetres and one foot is exactly 0.3048 metres. Because 0.3048 divided by 0.0254 is exactly 12, the foot will always contain twelve whole inches with nothing left over.

That clean ratio is why a standard ruler is 12 inches long and is often labelled as a one foot ruler. Each numbered mark from 1 to 12 represents one inch, and the final mark lands exactly at one foot.

It is worth pausing on why the number is exactly 12 and not something messier. Because the foot is locked to the inch by international agreement, there is no version of the foot, anywhere it is officially used, that holds 11 or 13 inches. The United States, the United Kingdom, Canada and a handful of other countries all share the same definition, so a foot measured on a tape in Texas is the same length as a foot measured on a tape in London. That consistency is what lets construction drawings, furniture dimensions and clothing sizes move across borders without anyone re-checking the math.

Feet to inches conversion chart

Use this chart for the conversions people search for most. Every value comes from the same rule: multiply feet by 12 to get inches.

The formula and how to use it

The conversion works in both directions and only needs one number, 12. Pick the direction you need:

• Feet to inches: inches = feet times 12
• Inches to feet: feet = inches divided by 12

Worked example: converting 7 feet to inches

1. Start with the measurement you have: 7 feet.
2. Multiply by 12 because each foot holds 12 inches: 7 times 12.
3. Do the math: 7 times 12 equals 84.
4. Write the answer with its unit: 7 feet equals 84 inches.

Worked example: converting 30 inches to feet

1. Start with 30 inches.
2. Divide by 12 to find whole feet: 30 divided by 12 equals 2.5.
3. Read the result: 30 inches equals 2.5 feet, or 2 feet and 6 inches.

If you would rather skip the arithmetic entirely, our length converter does feet, inches, yards, centimetres and metres instantly. It is handy when you are mixing units, like reading a height in feet and inches but needing the total in centimetres.

Inches, feet, yards and miles: how they fit together

The inch sits at the bottom of the imperial length ladder, and each larger unit is a simple multiple of the one below it. Once you know that a foot is 12 inches and a yard is 3 feet, the rest follows naturally.

So a yard is 36 inches because 3 feet times 12 inches equals 36. If you ever need to go further up the scale, see our guide on how many feet in a mile, which breaks down the 5,280 foot mile in the same plain way.

Where you use foot to inch conversions in real life

• Home projects: Lumber, shelving and curtain rods are often sold in feet but cut to the inch.
• Height: A person listed as 5 feet 9 inches is 69 inches tall, found by doing 5 times 12 plus 9.
• Sewing and crafts: Fabric and ribbon are measured in inches, while patterns may reference feet.
• Sports and gardens: Field markings, fence panels and raised beds mix feet and inches constantly.

Converting a height is the most common case. To get total inches, multiply the feet by 12 and then add the leftover inches. For 6 feet 2 inches, that is 6 times 12 equals 72, plus 2, which gives 74 inches.

Working with fractions of an inch

Imperial rulers do not stop at whole inches. The space between each inch is split into smaller fractions, usually halves, quarters, eighths and sixteenths, marked by progressively shorter lines. Reading them is just a matter of counting the tick you have landed on. The four most common fractions, written as decimals of a foot, are handy to memorise.

This matters most in trades like carpentry and tailoring, where a measurement of 3 feet 7 and a half inches needs to be read, recorded and cut accurately. To turn that into total inches you would do 3 times 12 equals 36, plus 7, plus 0.5, giving 43.5 inches. Keeping fractions and whole inches separate until the final step keeps the arithmetic clean.

Common mistakes to avoid

• Using 10 instead of 12. The imperial system is not base ten for length, so a foot is 12 inches, not 10.
• Mixing up the direction. Multiply when going from feet to inches, divide when going from inches to feet. Swapping these gives wildly wrong answers.
• Treating 2.5 feet as 2 feet 5 inches. The decimal 0.5 foot is 6 inches, so 2.5 feet is 2 feet 6 inches.
• Forgetting the leftover inches in a height. For 5 feet 4 inches, remember to add the 4 after multiplying 5 by 12.

If you work across measurement systems often, it helps to keep a few anchor facts handy, much like knowing how many grams in an ounce for weight. For length, the anchors are simple: 12 inches in a foot, 3 feet in a yard.

The bottom line is easy to remember: there are 12 inches in one foot, and a yard is 3 feet or 36 inches. Multiply feet by 12 to get inches, divide inches by 12 to get feet, and lean on the length converter whenever you want an instant, error free answer.