Feet and Inches Calculator App
Welcome to the most human‑friendly feet and inches calculator app. Instantly convert feet+inches to centimeters, meters, and total inches. Visual graph shows your height relative to global ranges. All factors include USA & WHO references.
📐 height converter
height visual (cm vs world max ~ 250 cm)
Factor info (USA): The average male height in US is ~5’9″ (175 cm), female ~5’4″ (162.5 cm). Your entry compares dynamically above.
📊 global height references & conversion tables
Our feet and inches calculator app uses precise factors: 1 foot = 12 inches = 30.48 cm (international standard). Below you’ll find detailed tables used by health professionals in the USA and worldwide.
- USA standards (CDC) – growth charts 2–20 years.
- WHO standards – 0–5 years, based on multi‑country data.
- ISO 80000-3 – quantities and units of length.
Table 1: common feet+inches to cm (exact)
| Feet / inches | Total inches | Centimeters | Meters |
|---|---|---|---|
| 5′0″ | 60″ | 152.40 cm | 1.52 m |
| 5′6″ | 66″ | 167.64 cm | 1.68 m |
| 5′10″ | 70″ | 177.80 cm | 1.78 m |
| 6′0″ | 72″ | 182.88 cm | 1.83 m |
| 6′4″ | 76″ | 193.04 cm | 1.93 m |
Table 2: US average height (adults 20+) – CDC 2020
| Gender | Feet/Inches | cm |
|---|---|---|
| Male (USA) | 5′9″ | 175.3 cm |
| Female (USA) | 5′4″ | 162.6 cm |
| Male (world avg) | 5′7.5″ | 171 cm |
| Female (world avg) | 5′2.5″ | 159 cm |
Table 3: WHO 0‑2 years length (cm) selected percentiles
| Age | 3rd percentile | 50th percentile | 97th percentile |
|---|---|---|---|
| 12 months (boy) | 72.0 cm | 76.1 cm | 80.3 cm |
| 12 months (girl) | 70.5 cm | 74.3 cm | 78.3 cm |
| 24 months (boy) | 82.5 cm | 87.1 cm | 92.0 cm |
Table 4: average male height by country (approx)
| Country | cm | ft/in |
|---|---|---|
| Netherlands | 183.8 cm | 6′0.5″ |
| USA | 175.3 cm | 5′9″ |
| Japan | 172 cm | 5′7.5″ |
| Brazil | 173 cm | 5′8″ |
Table 5: exact conversion factors (international)
| Unit | Exact value (metric) |
|---|---|
| 1 foot (ft) | 30.48 cm |
| 1 inch (in) | 2.54 cm |
| 12 inches | 1 ft = 30.48 cm |
❓ frequently asked questions (faq)
How accurate is this feet and inches calculator app?
It uses the official international conversion (1 in = 2.54 cm exactly). All results are rounded to one decimal for readability. The bar graph scales to 250 cm (approx 8′2″) to cover >99% of human heights.
What are the USA height standards?
According to CDC 2020, the average US adult man is 5′9″ (175.3 cm) and woman 5′4″ (162.6 cm). For children, doctors use CDC growth charts (2–20 years). Our tool gives context to your numbers.
Can I use decimal inches (like 5.5″)?
Yes — the inches field accepts decimals (e.g., 5.5, 10.25). It’s perfect for half or quarter inches. The calculator adds them to the total feet correctly.
Why is there a “model year” field?
Some users track equipment or body dimensions by year (e.g., 2024 car seat height, or yearly health check). It doesn’t change the math, but shows the reference year you’re simulating. Perfect for future use.
Does this follow WHO standards?
Absolutely. WHO global standards (0–5 years) and international length units are embedded in the tables. The conversion matches all world health applications.
Use the Square Feet to CFM Calculator for quick area-to-CFM conversions, or explore the full Feet & Inches Measurement Calculator category to access all length and measurement tools.