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NerdCalc

NerdCalc

by Nidal Fakhouri

183 ratings
33 reviews
📚 Education
🔧 Utilities
Free

Details

Released
April 28, 2011
Updated
September 10, 2026

Features

Developer

Nidal Fakhouri
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NerdCalc screenshot #1 for iPhone
NerdCalc screenshot #2 for iPhone
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About

Perform calculations across binary, hexadecimal, and decimal number bases simultaneously. Easily switch input modes and see results update instantly for all bases. Supports unsigned and 2's complement for negative numbers, along with arithmetic, logic, and bitwise operations.

✓Simultaneous base display
✓Switchable input modes
✓Unsigned and 2's complement support
✓Arithmetic operations
✓Logic operations
✓Bitwise shifting
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What's New in NerdCalc

2.0

September 10, 2026

NerdCalc has been completely rebuilt under the hood to bring it into the modern era while keeping the calculator you know and love. Please let me know if you encounter any bugs!

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User reviews

Most RecentHighest RatedLowest Rated

Great

Useful, Free, Ad-Free, and Privacy Respected. What is not to like!!! Thank you
AAngryBirdsCausesBigExpenseLOL

I tried a few of the programmer calculators, this is the best!

Hi, please maintain this app for a long time. It's exactly what programmers need (you know this, I'm sure :))

Thaaanks!
Ssdk_dev

Look, it works, okay?

My goodness, I’ve used it maybe ten times so far in two days, and it asks me for a review every time. I’m just writing this to shut it up, gosh dang, wow.
MVMike B V

Great calculator for programmers

I use this calculator frequently for my job. Easily lets you perform all logical and math operations on any size integer value. Result can be viewed in decimal, binary and hexadecimal at the same time. Works with signed and unsigned values.
AAstrnmr

Great for PLC

Used this today in a training class for a major vehicle manufacturer. Simple and easy to use.
JCJohnny Cox
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FAQ

What does NerdCalc do?

NerdCalc is a calculator that displays binary, hexadecimal, and decimal number bases simultaneously. You can input numbers in any of these bases, and the app will instantly update the results for all three. It supports both unsigned and 2's complement representations for negative numbers.

What types of operations can NerdCalc perform?

NerdCalc can perform basic arithmetic operations (addition, subtraction, multiplication, division) as well as logic operations (AND, OR, XOR, NOT). It also supports bitwise shifting operations, allowing you to move bits left or right.

Is NerdCalc free to use?

Yes, NerdCalc is completely free to use. There are no in-app purchases or advertisements within the application.

What is the main benefit of using NerdCalc?

The primary benefit of NerdCalc is its ability to display and calculate across binary, hexadecimal, and decimal bases concurrently. This eliminates the need to switch between different calculators or manually convert numbers, streamlining calculations for users who work with multiple number systems.