# CosmoCalc

> Education

Canonical page: [https://chrome-stats.com/d/id334569654](https://chrome-stats.com/d/id334569654)

## Overview

- **ID:** `id334569654`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Eli Rykoff
- **Category:** Education
- **Rating:** 5.00 / 5 (4 ratings)
- **Version:** 3.1.1
- **Last updated:** 2017-01-02
- **First published:** 2009-10-13
- **Size:** 959 KB
- **Data as of:** 2026-09-20
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/cosmocalc/id334569654)
- **Website:** [http://erykoff.googlepages.com/](http://erykoff.googlepages.com/)

## Description

CosmoCalc is a simple cosmological distance calculator.  With a simple and intuitive interface you can quickly set a reference cosmology and redshift, and CosmoCalc will calculate a full suite of astronomical distances and scales.

CosmoCalc is a useful and educational reference tool for astronomers, astronomy students, and anybody interested in calculating the distance to astronomical sources.

CosmoCalc allows you to:
* Select cosmological parameters H_0, Ω_m, and Ω_Λ with simple touch-screen controls
* Easily choose from common reference cosmologies, including Planck 2013, WMAP9, Concordance, and Einstein-deSitter
* Quickly determine the luminosity distance, angular diameter distance, lookback time, age of the Universe, comoving volume, and critical density
* Easily switch between flat and non-flat cosmologies by clicking on the chain

## Rankings

- #495,016 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id334569654)