# FENa Calculator — Fractional Excretion of Sodium

> Fractional Excretion of Sodium (iPhone/iPad app by Krzysztof Gwiazda.)

- Source: https://appshunter.io/ios/app/fena-calculator/id6456524579 (this page in markdown: same URL + `.md`)
- Developer: [Krzysztof Gwiazda](https://appshunter.io/developer/1546740383)
- Category: Utilities, Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 12.1 · 13 MB
- Languages: English
- Released: 2023-08-02
- Data updated: 2026-05-16
- User reviews in markdown: https://appshunter.io/ios/app/fena-calculator/id6456524579/reviews.md

## What is FENa Calculator?

Fractional Excretion of Sodium (FENa).

Quick and easy to use FENa calculator.  Enter the required data to get FENa percentage result:
Plasma Sodium:       mmol/L  or  mEq/L
Plasma Creatinine:  mg\dL    or  µmol/L
Urine Sodium:          mmol/L  or  mEq/L
Urine Creatinine:      mg\dL   or  µmol/L

No fuss calculator. Does what it says on the tin.


## Version history (last 4 releases)

### 1.0.3 — 2024-01-08

EU GDPR consent form

### 1.0.2 — 2023-08-16

Minor bug fix

### 1.0.1 — 2023-08-02

Minor bug fix.

### 1.0 — 2023-08-02

No release notes.

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## More apps by Krzysztof Gwiazda

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All apps by Krzysztof Gwiazda: https://appshunter.io/developer/1546740383

## Related topics

[fena calculator](https://appshunter.io/ios/topics/fena-calculator) · [sodium fena calculator](https://appshunter.io/ios/topics/sodium-fena-calculator)

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*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 2026-05-16.*