# IT電卓+ — Specialized calculator for IT

> Specialized calculator for IT (iPhone/iPad app by Fuji Bit LLC..)

- Source: https://appshunter.io/ios/app/it-plus/id6774959562 (this page in markdown: same URL + `.md`)
- Developer: [Fuji Bit LLC.](https://appshunter.io/developer/1874205957)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 4 MB
- Languages: American English, Japanese
- Released: 2026-05-31
- Data updated: 2026-06-15
- User reviews in markdown: https://appshunter.io/ios/app/it-plus/id6774959562/reviews.md

## What is IT電卓+?

IT電卓+ is a focused calculator for engineers, network administrators, and learners studying for IT certifications. Four common tasks are organized into simple, switchable tabs.

[Unit Conversion]
Convert between bit, B, KB, MB, GB, TB, and PB. Toggle between SI prefixes (base 1000) and IEC prefixes (base 1024 — KiB, MiB, etc.) so you can match the convention you need for storage, memory, or traffic.

[Subnet Mask Calculator]
Enter an IPv4 address and a CIDR value to get the network address, broadcast address, first and last usable host, subnet mask, wildcard mask, and host counts. /31 (RFC 3021) and /32 are handled correctly as special cases.

[Base Conversion and Bit Operations]
Convert between binary, octal, decimal, and hexadecimal. Binary output is grouped every four bits for readability. AND, OR, XOR, left shift, and right shift are available on the same screen.

[Link Speed and Transfer Time]
Convert across bps, Kbps, Mbps, Gbps, B/s, KB/s, MB/s, and GB/s. Combine a file size with a link rate to estimate how long a transfer will take.

[Languages]
Japanese and English.

[Privacy]
Calculations stay on your device. The app does not upload your inputs or results.


## Version history (last 1 release)

### 1.0 — 2026-05-31

No release notes.

## More apps by Fuji Bit LLC.

- [SUUGAKU](https://appshunter.io/ios/app/suugaku/id6759102221)
- [BUTURAKU](https://appshunter.io/ios/app/buturaku/id6759213255)
- [PAKEDOU](https://appshunter.io/ios/app/pakedou/id6759820254)
- [OKURERUNA！](https://appshunter.io/ios/app/okureruna/id6759956971)
- [HARAKU](https://appshunter.io/ios/app/haraku/id6759958253)
- [KORAKU](https://appshunter.io/ios/app/koraku/id6760215571)

All apps by Fuji Bit LLC.: https://appshunter.io/developer/1874205957

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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 2026-06-15.*