# 暦電卓 \| 西暦・和暦・年齢・干支が早わかり

> Converts between Gregorian, Japanese eras, age, and zodiac signs. (iPhone/iPad app by NAOYA ONO.)

- Source: https://appshunter.io/ios/app/id1622960123 (this page in markdown: same URL + `.md`)
- Developer: [NAOYA ONO](https://appshunter.io/developer/1530328146)
- Category: Reference, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.6 · 36 MB
- Languages: American English, Japanese
- Released: 2022-05-11
- Data updated: 2026-08-26
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/id1622960123/reviews.md

## What is 暦電卓 | 西暦・和暦・年齢・干支が早わかり?

西暦・和暦・年齢・干支をすぐに調べたい時に役出す電卓アプリ。
元号リスト付き。

「今年って令和何年？」

「645年の元号って何？」

「50歳の人って何年生まれで干支は何？」

こういった疑問をパッと解決してくれるアプリです。


●できること
1. 西暦から和暦・年齢・干支を算出
2. 和暦から西暦・年齢・干支を算出
3. 年齢から西暦・和暦・干支を算出


● 使い方
1. 計算方法（西暦、年齢など）を選択します。
2. 数字を入力します。
3. 決定ボタンを押します。

選択した計算方法と入力した数字から西暦・和暦・年齢・干支を自動計算します。
入力する数字を間違えた場合は「C」ボタンで取り消し可能です。


● 自動変換機能
「昭和65年」のような存在しない年を入力すると自動で「平成２年」のように正しい年に変換します。
自動変換が不要な場合は設定でOFFにすることも可能です。

## Key features

- Gregorian to Japanese era conversion
- Japanese era to Gregorian conversion
- Age calculation
- Zodiac sign determination
- Era list included
- Automatic conversion of invalid years

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Support Developer | $0.99 | one-time |
| Remove ads | $3.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/id1622960123/reviews.md

### 3/5 — 年齢

*2023-03-06*

これは駄目だは🙅 年齢計算目的で購入したのに 年齢が数字一桁しか表示されない😖 内課金返せ‼️
文字サイズ小さくしたら年齢表示出来ました😅
出来ればもう少し大きい文字サイズでも表示できる様にして頂きたい🙇🏻

## Frequently asked questions about 暦電卓 | 西暦・和暦・年齢・干支が早わかり

### What is 暦電卓?

暦電卓 is a utility app that helps you quickly convert between the Gregorian calendar and Japanese eras, calculate ages, and determine zodiac signs. It's designed to answer questions like 'What Japanese era is this year?' or 'What is the zodiac sign for someone aged 50?'

### Does 暦電卓 have ads?

Yes, 暦電卓 contains advertisements. This allows the app to remain free to download and use for its core features.

### Can 暦電卓 convert non-existent years?

Yes, 暦電卓 features an automatic conversion function that corrects invalid year inputs, such as 'Showa 65', to the correct corresponding year, like 'Heisei 2'. This feature can be turned off in the settings if not desired.

### What devices does 暦電卓 support?

暦電卓 is available for iPhone, iPad, and iPod devices. It is designed to function across these Apple platforms.

### How often is 暦電卓 updated?

The app was last updated on December 6, 2025, with version 1.5.3. This indicates recent development and maintenance.

### What is the age rating for 暦電卓?

暦電卓 has an age rating of 4+. This means it is considered suitable for users of all ages, including young children.

### Can I purchase 暦電卓?

暦電卓 is free to download and use. However, it does offer in-app purchases, which may unlock additional features or remove advertisements.

### How do I use 暦電卓 to calculate my age?

To calculate your age, select 'Age' as the calculation method, input your birth year (either Gregorian or Japanese era), and press the 'Decide' button. The app will automatically compute your age and zodiac sign.

## Version history (last 5 releases)

### 1.5.3 — 2025-12-06

レイアウトの調整とパフォーマンス改善を実施しました。

### 1.5.0 — 2023-06-28

メンテナンスアップデートを実施しました。

### 1.4.0 — 2023-04-30

1. 計算結果エリアのレイアウトデザインを追加しました。設定画面で「デザイン１」と「デザイン２」から選択できます。
2. パフォーマンス改善を実施しました。

### 1.3.0 — 2023-03-26

レイアウトを調整しました。

### 1.2.0 — 2022-11-11

パフォーマンス改善を実施しました。

## Apps similar to 暦電卓 | 西暦・和暦・年齢・干支が早わかり

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [JpYear Japanese Year](https://appshunter.io/ios/app/jpyear-japanese-year/id1241864962) | — | Free | Reference |
| [こよみはやみ](https://appshunter.io/ios/app/id6471490781) | — | Free | Reference |
| [Hinokoto Japanese Era](https://appshunter.io/ios/app/hinokoto-japanese-era/id1593393262) | — | Free | Reference |
| [卒業年度・年齢・西暦・和暦 ・干支早見表 - 履歴書にも便利](https://appshunter.io/ios/app/id1561089214) | — | Free | Reference |
| [西暦和暦早見表｜年齢＆干支も一瞬でチェック](https://appshunter.io/ios/app/id1519889465) | — | Free | Reference |
| [Japanese Calendar Reiwa Widget](https://appshunter.io/ios/app/japanese-calendar-reiwa-widget/id1562159407) | 5.0 (1) | Free | Reference |

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All apps by NAOYA ONO: https://appshunter.io/developer/1530328146

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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 2026-08-26.*