# BED Calculator : Radiotherapy

> BED EQD2 & Fraction Calculator

Canonical page: [https://chrome-stats.com/d/id397088240](https://chrome-stats.com/d/id397088240)

## Overview

- **ID:** `id397088240`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** MARGINAL GAINS INC.
- **Category:** Medical
- **Rating:** 5.00 / 5 (3 ratings)
- **Version:** 2.0
- **Last updated:** 2026-03-12
- **First published:** 2010-10-21
- **Size:** 3.74 MB
- **Data as of:** 2026-09-22
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/bed-calculator-radiotherapy/id397088240)
- **Website:** [https://ttm.jp](https://ttm.jp/)
- **Privacy policy:** [https://marginalgains.github.io/privacy-policy](https://marginalgains.github.io/privacy-policy)

## Description

Now with Apple Watch support and Dark Mode. Calculate BED and EQD2 instantly using the LQ model — designed for radiation oncology professionals.

BED Calculator is a professional-grade tool for computing Biological Effective Dose (BED) and Equivalent Dose in 2 Gy fractions (EQD2) using the Linear-Quadratic (LQ) model. Developed for radiation oncologists, medical physicists, and radiation therapy technologists, it enables rapid and reliable dose calculations in an efficient, streamlined interface — now available on Apple Watch.

Features

Intuitive scroll-based input for swift BED and EQD2 calculation
Cumulative dose summation across up to 3 separate treatment courses
Fractionation conversion: calculate the number of fractions required to achieve an equivalent BED at a modified dose per fraction, and vice versa
Apple Watch support for quick calculations
Dark Mode support

Disclaimer

This application is intended for educational and academic reference purposes only. It is not intended for direct clinical decision-making. Any clinical application is undertaken solely at the user's own discretion and responsibility. The developer accepts no liability for any loss or damage arising from the use of this application.

## Rankings

- #554,709 — Overall

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- [BED LQ Calc](https://chrome-stats.com/d/id6749206758) — 5.00 / 5
- [EQD2 Calculator](https://chrome-stats.com/d/id1200344433) — 5.00 / 5
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- [PocketRT](https://chrome-stats.com/d/id6796613655)
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- [LQCalc](https://chrome-stats.com/d/id1555260645)
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- [Calculate by QxMD](https://chrome-stats.com/d/id361811483) — 4.80 / 5
- [Medical Calc for Apple Watch](https://chrome-stats.com/d/id1021378080) — 3.00 / 5
- [eLQ](https://chrome-stats.com/d/id398906906) — 4.00 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/id397088240)