Hex,Dec,Oct,Bin(Dev Calc)

12KK Productivity In-app purchases Contains ads

The Calculator for Developer
Hex,Dec,Oct,Bin in one screen

Rating: 4.7; 6.1K ratings
Downloads: 500K+; on Google Play
Price: Free; In-app purchases
Updated: Jul 27; 2026 · v2.3.15

Screenshots

About Hex,Dec,Oct,Bin(Dev Calc)

The Calculator for Developer

Developer Calc includes the following features:
■ Binary, octal, decimal, and hexadecimal in one screen
■ The maximum value : 0x0FFF FFFF FFFF FFFF
■ The minimum value : 0xF000 0000 0000 0000
■ The large 19-digit display of decimal
■ Conversion reset ON/OFF

What’s new

Version 2.3.15 · Updated July 27, 2026

Updated some UI.

User reviews

Kevin KML

What an excellent app, does everything it says.

William Tsang

Useful for doing quick math

Thomas Nguyen

Very easy to use

Krizzeir Stardust

Nice app for utilities

Brett Pawielski

Simple interface and reliable programming calculations. I mainly use it to convert hex <> dec numbers, and doing math in hex & bin formats. For both its great.

Carsten Idland

Useful tool!!!

Frequently asked questions

What are the features of Developer Calc?

Developer Calc includes the following features: Binary, octal, decimal, and hexadecimal in one screen, the maximum value of 0x0FFF FFFF FFFF FFFF, the minimum value of 0xF000 0000 0000 0000, the large 19-digit display of decimal, and Conversion reset ON/OFF.

What values can be represented in Developer Calc?

Developer Calc can represent values in binary, octal, decimal, and hexadecimal. The maximum value is 0x0FFF FFFF FFFF FFFF and the minimum value is 0xF000 0000 0000 0000.

App details

Hex,Dec,Oct,Bin(Dev Calc) is a free Productivity app for Android with 500,000+ installs on Google Play and a 4.7/5 average rating from 6,153 ratings. It was released on February 7, 2014 and last updated on July 27, 2026. It's developed by 12KK. It requires Android 6.0 or later. The app contains ads and offers in-app purchases.

Category: Productivity
Rating: 4.7 / 5 (6,153)
Installs: 500,000+
In-app purchases: Yes
Ads: Contains ads
Version: 2.3.15
Requires Android: 6.0
Content rating: Everyone
Released: February 7, 2014
Last updated: July 27, 2026
Developer: 12KK

View on Google Play

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