Height Calculator: Estimate Your Height Now

A Height Calculator is a fantastic free online tool which allows you to calculate, convert and understand your height. Whether you\'re trying to calculate your height in feet and inches, convert centimetres to inches or find out someone’s height in metres, this calculator will help you.

In the United States, height is typically measured in feet and inches whereas most countries use centimetres and metres. This can cause confusion when converting different measurements.

Our Height Calculator makes it simple to convert measurements. All you need to do is enter the height or units.

A height calculator can be very helpful to adults, parents keeping track of their children’s growth, students, healthcare professionals, athletes and anyone who regularly deals with heights.

Please note this calculator is simply for height measurement and conversion. It will not predict your future adult height or any issues with growing.

How to use the Height Calculator

Using the Height Calculator is simple. Just follow the steps below to calculate.

Enter your height.

Choose your measurement unit.

Select your output measurement.

Click calculate.

Your result will be shown.

Reset to clear the values and calculate a new height.

For example if your height is 5ft 8 inches enter into the calculator to convert it into centimetres. It would show you have a height of around 172.72cm.

Make sure to carefully enter your measurement.

Height Calculator Formula

A height calculator uses simple formulas to convert your measurements.
The most common formulas are:

Feet and Inches to Centimetres

[Height in cm] = [((Feet x 12) + Inches) x 2.54]

There are 12 inches in a foot and 2.54cm in an inch so it will convert your measurement into centimetres.

Centimetres to Inches

[Inches] = [Centimetres] / 2.54

Centimetres to Feet

[Feet] = [Centimetres] / 30.48

Metres to Centimetres

[Centimetres] = [Metres] x 100

Inches to Centimetres

[Centimetres] = [Inches] x 2.54

Feet to Metres

[Metres] = [Feet] x 0.3048

All formulas are using internationally recognised conversion formulas.
Example

Let’s take a look at how the Height Calculator works using an example.

We know someone has a height of 5ft 8 inches and we want to convert this into centimetres.

We know;

Height = 5ft 8in

1ft = 12 inches

1inch = 2.54cm

Convert feet to inches;

5 x 12 = 60 inches

Add remaining inches;

60+8=68 inches

Convert inches to centimetres;

68 x 2.54=172.72cm

Height;

172.72cm

Measurement Unit Result

Feet and Inches 5ft 8in

Inches 68in

Centimetres 172.72cm

Metres 1.7272m

Therefore if someone is 5ft 8in tall they are approximately 172.72cm or 1.73m tall.

This shows how quickly you can convert your height using the calculator.
Understanding Your Height Calculator Result

Once you’ve entered your measurement it will show your height in your chosen unit of measurement.

It is important to understand what your result means.

Below is a table showing common heights.

Measurement Equivalent

5ft 0in 152.40cm
5ft 2in 157.48cm
5ft 4in 162.56cm
5ft 6in 167.64cm
5ft 8in 172.72cm
5ft 10in 177.80cm
6ft 0in 182.88cm
6ft 2in 187.96cm

For example if your calculator shows 180cm you are approximately 5ft 10.87in tall.

You could round this to 5ft 11in.

Bear in mind that rounding can cause slight differences. If you’re using this for medical records please use the level of precision asked by the organisation.

Things that can affect your height measurement

There are a few things that can affect your height measurements.

Age – As a child and teenager your height will change. Once you’ve finished growing your adult height should be stable.

Genetics – Genetics plays a big part in how tall you naturally are. Knowing your parents height can be helpful.

Nutrition – Eating well as a child/teenager can help you grow normally. If you do not eat well this can impact your growth.

Posture – Standing up straight with your back straight and looking forward will give a more consistent measurement. If you slouch you’ll look shorter.

Time of Day – Your height can vary slightly throughout the day as your spinal discs compress from your normal body weight. You’ll often be slightly taller in the mornings.

Incorrect Position – If you are not stood correctly, wearing shoes, standing on an uneven surface or using an inaccurate measuring tool it can affect your height.

Medical Conditions – Some medical conditions can affect your growth. If you are concerned about your growth as a child please speak to a healthcare professional.

For the most consistent measurements please measure your height without shoes against a flat vertical surface whilst standing upright.

Benefits of Using a Height Calculator

A Height Calculator can be very beneficial.

Quick conversion – Convert from feet and inches to centimetres or metres in seconds.

Medical – Often height measurements are needed when filling in medical forms.

Children’s Growth – Parents can track their child’s growth. It will keep your measurements consistent. If you are concerned about your child’s growth please speak to a paediatrician.

Fitness – Athletes and those into fitness may need to know their height.

Shopping – Knowing your height can be useful when looking at size charts for clothes. It can also help you choose specific products. You can also compare international measurements.

Education – Students can use this to understand how to convert measurements. They can also practise their maths. It can also help them understand the metric/imperial system.

International Comparison – Easily compare measurements from different countries.

Overall this calculator will save you time and reduce errors from manually converting. It will make your measurements easier to understand.

Accuracy, Assumptions and Limitations

This Height Calculator uses standard conversion formulas. These are internationally recognised so you can be confident of accurate results for general measurement and conversion.

However your results will depend on how accurate your original measurement is.

For example if you enter 5ft 8in it will accurately convert this to 172.72cm but it cannot tell you if your original measurement was accurate.

Assumptions and Limitations:

The calculator assumes your height measurement is correct.

1 inch = 2.54cm exactly.

1 foot = 12 inches exactly.

Depending on the settings on the calculator your results may be rounded.

The calculator will not measure your actual height.

It will not predict your future height or genetic potential for growth.
It will not tell you if your height is normal for your age medically.

There may be slight differences due to your posture, measuring tools and time of measurement.

For accurate physical measurements please take your shoes off and measure against a level surface. Stand upright with your head in a natural position. Use an accurate measuring tool or wall mounted stadiometer.
If you are concerned about your child’s growth please speak to a qualified healthcare professional.

FAQs

How do I calculate my height in centimetres?

To calculate your height in centimetres convert your feet to inches. Add your remaining inches. Multiply by 2.54. For example 5ft 8in is 172.72cm.

How many centimetres in a foot?

There are exactly 30.48cm in a foot. This is useful when converting from imperial to metric.

How many inches in 5ft 10in?

There are 60 inches in 5ft. Add your 10 inches. This makes 70 inches. 5ft 10in = 70 inches = 177.80cm.

Can I use a Height Calculator to predict my adult height?

No. A standard Height Calculator will not predict your future adult height. It will just convert your current height. To estimate your adult height you would need further information such as age, parent’s heights, growth history and development. Please speak to a healthcare professional.

What is the most accurate way to measure my height at home?

Take your shoes off. Stand upright against a flat wall. Ensure your feet are flat on the floor. Look straight ahead. Place a flat object horizontally on your head. Mark where it touches the wall. Measure from the floor to the mark using a measuring tape.