# NIH BMI Calculator

> Body Mass Index calculator for health screening and resource access. (iPhone/iPad app by The National Heart Lung and Blood Institute.)

- Source: https://appshunter.io/ios/app/nih-bmi-calculator/id446441346 (this page in markdown: same URL + `.md`)
- Developer: [The National Heart Lung and Blood Institute](https://appshunter.io/developer/446441350)
- Category: Health & Fitness
- Price: Free
- Rating: 2.90/5 from 51 App Store ratings · 75 written reviews indexed
- Age rating: 4+
- Requires: iOS 7.0 · 16 MB
- Languages: American English
- Released: 2011-07-24
- Data updated: 2026-07-27
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/nih-bmi-calculator/id446441346/reviews.md

## What is NIH BMI Calculator?

The National Heart, Lung, and Blood Institute’s BMI (Body Mass Index) calculator is a useful tool to screen for weight categories that may lead to health problems. The downloadable phone application puts the fully functioning calculator right on your phone, along with links to resources on the NHLBI site.

## Key features

- Body Mass Index calculation
- Weight category screening
- Access to NHLBI health resources
- Downloadable phone application

## What do users think of NIH BMI Calculator?

Overall sentiment: negative

**Pros**

- 👍 Simple and straightforward
- ✅ Calculates BMI correctly
- 🔗 Links to helpful information
- 🚫 No ads
- 💯 Works as intended (when functional)

**Cons**

- ❌ Cannot key decimal points
- ❌ Unusable in metric mode
- ❌ App crashes/won't open
- ❌ Outdated and not maintained
- ❌ Ignores physical fitness/gender

**Commonly reported bugs**

- App crashes immediately on launch
- App does not open
- Input fields non-responsive on active call
- App closes before loading
- App no longer works with latest iOS updates

**Most requested features**

- Add decimal point input for weight
- Allow recording of daily weight and view as a graph
- Include gender input for BMI calculation
- Add option for recording daily exercise
- Add option for tallying fruit/vegetable intake
- Optimize for newer iPhone models
- Store results within the app
- Include information within the app, not redirect to web

## Recent user reviews (10 of 75)

All indexed reviews: https://appshunter.io/ios/app/nih-bmi-calculator/id446441346/reviews.md

### 2/5 — Whole numbers only

*2026-07-10, version 2.0.2*

Does not accept fractional, inputs or decimal inputs. If your height is 5 foot 8.5 inches, or your weight is 160.5 pounds, this information cannot be entered. Only accepts whole numbers.

No decimal point on provided keyboard

### 3/5 — Unable to key a decimal point in the keyboard

*2024-07-29, version 2.0.2*

The app does not facilitate keying a decimal point on their keyboard.  Only whole lbs of kilograms.

### 4/5 — Almost perfect

*2023-11-17, version 2.0.2*

Just needs the addition of decimals to be perfect

### 1/5 — Please include decimals.

*2023-04-23, version 2.0.2*

This should be an easy fix. Uninstalling.

### 3/5 — Need decimals

*2023-02-25, version 2.0.2*

The keyboard you present for noir is great, but it needs decimals please.

### 1/5 — Unusable in Metric Mode

*2020-02-26, version 2.0.2*

Two decimal places are required in Metric mode for accuracy!

### 1/5 — Can’t write weight in decimals

*2018-02-25, version 2.0.2*

In metric you can’t input the weight in decimal, no option of decimal, who proof checks the app?

### 1/5 — Who programmed this?

*2017-12-09, version 2.0.2*

No decimal place possible for metric weight. Come on, get serious.

### 2/5 — No decimals

*2017-10-07, version 2.0.2*

This app would be significantly more useful if there was an option to use decimals

### 2/5 — pointless

*2017-09-26, version 2.0.2*

Can’t put a decimal point in when inputting weight in kilos

## Frequently asked questions about NIH BMI Calculator

### What does the NIH BMI Calculator app do?

The app functions as a Body Mass Index (BMI) calculator. It helps users screen for weight categories that may be associated with health problems. It also provides links to resources from the National Heart, Lung, and Blood Institute (NHLBI).

### Is the NIH BMI Calculator app free to use?

Yes, the application is free to download and use. There are no in-app purchases or advertisements mentioned, indicating it is a completely free tool.

### What are the key features of this BMI calculator?

The primary feature is its ability to calculate Body Mass Index (BMI). It also screens for weight categories that might lead to health issues and offers direct access to health resources from the NHLBI.

### Who is this app designed for?

This app is designed for individuals who want to understand their BMI and screen their weight category for potential health concerns. It's also useful for those seeking health information from a reputable source like the NHLBI.

## Version history (last 3 releases)

### 2.0.2 — 2016-06-29

This app has been updated by Apple to display the Apple Watch app icon.

Support for iOS 9.3.2

### 2.0.1 — 2016-06-11

Support for iOS 9.3.2.

### 1.2 — 2011-06-30

No release notes.

## Apps similar to NIH BMI Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Калькулятор ИМТ Индекс тела](https://appshunter.io/ios/app/id666822519) | 4.5 (27,101) | Free | Health & Fitness |
| [BMI Calculator for Weight Loss](https://appshunter.io/ios/app/bmi-calculator-for-weight-loss/id653425957) | 4.7 (1,653) | Free | Health & Fitness |
| [BMI Calculator: Weight Tracker](https://appshunter.io/ios/app/bmi-calculator-weight-tracker/id1572432663) | 4.9 (328) | Free | Health & Fitness |
| [BMI Calculator: Men, Women,...](https://appshunter.io/ios/app/bmi-calculator-men-women/id1590790062) | 4.7 (40) | Free | Health & Fitness |
| [BMI Calculator: weight control](https://appshunter.io/ios/app/bmi-calculator-weight-control/id6455786045) | 4.0 (2) | Free | Health & Fitness |
| [AiBMI](https://appshunter.io/ios/app/aibmi/id6739527839) | 5.0 (1) | Free | Health & Fitness |

## More apps by The National Heart Lung and Blood Institute

- [Peds CV Guidelines](https://appshunter.io/ios/app/peds-cv-guidelines/id947493891)
- [NHLBI COOP](https://appshunter.io/ios/app/nhlbi-coop/id1555497539)

All apps by The National Heart Lung and Blood Institute: https://appshunter.io/developer/446441350

## Related topics

[nih bmi calculator](https://appshunter.io/ios/topics/nih-bmi-calculator) · [my bmi calc](https://appshunter.io/ios/topics/my-bmi-calc) · [my bmi](https://appshunter.io/ios/topics/my-bmi) · [nih lactmed](https://appshunter.io/ios/topics/nih-lactmed) · [my institute](https://appshunter.io/ios/topics/my-institute)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-27.*