Height Calculator
Height shows up on ID cards, medical forms, fitness apps, and international travel documents. But the unit used depends on where you are: the US relies on feet and inches, while most of the world uses centimeters or meters. A height calculator bridges that gap instantly, turning an entry like 5′ 9″ into 175.26 cm without manual arithmetic.
The height calculator above converts between all common height units – feet and inches, total inches, centimeters, and meters – in real time. Enter a value in any field, and the equivalent measurements appear immediately. It works in either direction, so you can start from imperial or metric without changing settings.
How to Convert Height Manually
Every conversion rests on three fixed ratios:
- 1 inch = 2.54 centimeters (exactly)
- 1 foot = 30.48 centimeters (exactly, because 12 × 2.54)
- 1 centimeter ≈ 0.3937 inches
These definitions are set by international agreement and do not change. All manual calculations, and the logic of the height calculator, are built on them.
How Do I Convert Feet and Inches to Centimeters?
Follow this two‑step formula:
Centimeters = (feet × 30.48) + (inches × 2.54)
Example: 5′ 10″
(5 × 30.48) + (10 × 2.54) = 152.4 + 25.4 = 177.8 cm
If your height is given only in inches (e.g., 70 inches), simply multiply by 2.54 – 70 × 2.54 = 177.8 cm.
How Do I Convert Centimeters to Feet and Inches?
Step 1: Divide total centimeters by 30.48 to get the total feet.
Step 2: Take the decimal part (the leftover) and multiply it by 12 to find the inches.
Example: 180 cm
180 ÷ 30.48 ≈ 5.9055 ft → 5 whole feet
0.9055 × 12 ≈ 10.87 inches → 5′ 10.9″
The calculator handles the rounding and splits the value automatically.
Quick Height Conversion Chart
| Feet & Inches | Centimeters |
|---|---|
| 4′ 0″ | 121.92 |
| 4′ 6″ | 137.16 |
| 5′ 0″ | 152.40 |
| 5′ 4″ | 162.56 |
| 5′ 6″ | 167.64 |
| 5′ 8″ | 172.72 |
| 5′ 9″ | 175.26 |
| 5′ 10″ | 177.80 |
| 6′ 0″ | 182.88 |
| 6′ 2″ | 187.96 |
| 6′ 4″ | 193.04 |
For values between these marks, use the height calculator above to get precise results without rounding by hand.
Average Heights Around the World (Latest Data)
National health surveys give a snapshot of typical adult heights; they remain broadly stable over short periods.
- United States: Men ~5′ 9″ (175.3 cm), women ~5′ 4″ (162.6 cm) – CDC National Health and Nutrition Examination Survey.
- United Kingdom: Men ~5′ 9″ (175.3 cm), women ~5′ 3″ (161.6 cm).
- Netherlands (one of the tallest populations): Men ~6′ 0″ (183.8 cm), women ~5′ 7″ (170.4 cm).
- Japan: Men ~5′ 7″ (170.8 cm), women ~5′ 2″ (158.0 cm).
Height data are for general reference only. Individual growth and health assessments require professional medical advice.
Why Online Height Calculators Save Time
Manual conversions risk entry errors, especially when switching between mixed units like feet and inches. A dedicated height calculator displays all equivalent forms at once – ideal for travel documents, medical questionnaires that expect metric values, or fitness trackers that log stature in centimeters.
When accuracy matters, relying on a tool that applies the exact standards means no rounding mistakes and no forgotten carry‑overs from inches to feet.