Feet to Inches Calculator

Converting feet to inches is one of the simpler unit conversions you'll come across. The relationship between the two units is fixed and easy to work with once you know the key number: 12.

Every foot contains exactly 12 inches. So to convert any measurement from feet to inches, you multiply the number of feet by 12. That's really all there is to it. If you have a mixed measurement like 5 feet 7 inches, you convert the feet portion first and then add the remaining inches on top.

For example, if someone is 5 feet 7 inches tall, you'd multiply 5 by 12 to get 60, then add 7, giving you 67 inches total. Simple, consistent, and works every time.

The formula is straightforward:

Inches = Feet × 12

Since 1 foot equals exactly 12 inches, you scale that relationship up by whatever number of feet you're working with. Multiply by 12 and you're done.

• 1 ft = 12 inches
• 2 ft = 24 inches
• 5 ft = 60 inches
• 10 ft = 120 inches

If you're dealing with decimal feet rather than whole numbers, the same formula applies. Say you have 4.5 feet: 4.5 × 12 = 54 inches. The math doesn't change, it just requires one extra step with the decimal.

Here are some conversions that come up all the time in everyday situations:

These come up constantly when shopping for furniture, framing a room, or comparing heights. Having these memorized (or bookmarked) saves a lot of time.

Both feet and inches belong to the US customary system of measurement, which is also sometimes called the imperial system. This system is used primarily in the United States, though you'll also see it pop up in the UK and a handful of other countries for specific applications.

The inch is the smaller of the two units. Twelve of them make one foot. Above feet, you get yards (3 feet per yard) and then miles. So the hierarchy looks like this: inches are nested inside feet, feet are nested inside yards, and so on up the chain.

Most of the rest of the world uses the metric system, where centimeters and meters handle similar roles. One inch equals 2.54 centimeters, which is why metric-to-imperial conversions feel a little messier than going between feet and inches. Within the US customary system, the 1:12 ratio between feet and inches keeps things relatively clean.

Knowing which system a measurement belongs to matters a lot in practice. A spec sheet written in meters and one written in feet are going to look very different numerically, and mixing them up can cause real problems.

If you want to walk through the process manually, here's how to do it cleanly every time:

1. Identify your measurement in feet. Write down the number you're starting with. If it includes a fractional or decimal portion, keep that intact.
2. Multiply by 12. Take your feet value and multiply it by 12. This is the core of the conversion.
3. Add any remaining inches. If your original measurement was in feet and inches (like 6 ft 3 in), convert the feet to inches first, then add the extra inches to that total.
4. Label your answer. Write the result with the unit clearly marked as inches. This sounds obvious, but skipping the label is a common source of confusion when you revisit your notes later.

Let's run through a quick example. You're converting 7 feet 4 inches to inches total. Multiply 7 by 12 to get 84, then add 4. The answer is 88 inches. Done.

A quick-reference chart can be a lifesaver when you're in the middle of a project and don't want to stop and calculate. Here's a broader range to cover most common needs:

Print it out, screenshot it, or just bookmark this page. Having this range on hand covers most home improvement, construction, and everyday measurement scenarios without needing to pull out a calculator each time.

This conversion shows up in more places than you might expect. Here are some of the most common situations where you'll actually need it:

• Home improvement and construction: Lumber, drywall, and flooring are often sold by the foot but installed with measurements in inches. Switching between the two is a daily reality for contractors and DIYers alike.
• Height measurements: Doctors, athletic programs, and clothing brands frequently list heights in total inches rather than feet and inches combined. Knowing that 5'10" equals 70 inches saves time when filling out forms.
• Furniture and interior design: Ceiling heights, doorframe clearances, and furniture dimensions often require you to think in both units at once. A sofa listed at 84 inches long is 7 feet, which helps you picture whether it'll fit in your space.
• Sewing and fabric: Patterns sometimes call for measurements in inches even when the overall fabric length is given in feet or yards.
• Sports: Many sports reference dimensions in feet (a basketball court, a football field) but specific markings or equipment specs may use inches.
• Shipping and packaging: Box dimensions for shipping are typically listed in inches, even when the items being shipped are several feet long.

Once you start noticing it, you realize feet-to-inches conversion is one of those background skills that quietly comes up all the time.

Getting unit conversions wrong might seem like a minor mistake, but the consequences can range from mildly annoying to genuinely costly. Order a piece of trim that's 2 inches too short because you misread a measurement and you're making another trip to the hardware store. Mix up feet and inches on a larger project and you could be looking at structural problems or wasted materials.

Accuracy matters especially in fields like construction, engineering, manufacturing, and medicine. A miscalculation in a medical dosage or a building spec isn't just inconvenient. It can have real consequences. Even outside high-stakes settings, consistently working with the right numbers builds good habits and saves time in the long run.

Using a reliable calculator or a verified formula keeps errors out of the picture. Double-checking your inputs before you commit to a measurement is always worth the extra ten seconds. The math itself is simple, but being deliberate about it is what keeps simple tasks from turning into expensive fixes.