TechCalc64 Sci Calculator

40 reviews
Content rating
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About this app

A scientific calculator for engineers.
TechCalc64 has the following features.
- 64bit integer calculation, it's useful for calculating 64bit memory address.
- binary and hexadecimal mode. It's easy to change radix with one button.
- bit shift keys('<<' and '>>' keys) in bin and hex mode.
- back space key.
- log2 key, It's useful to check the required bit width of a number.
Updated on
Aug 20, 2023

Data safety

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No data shared with third parties
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No data collected
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Ratings and reviews

40 reviews
A Google user
January 29, 2015
Keep at it.
1 person found this review helpful
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A Google user
December 6, 2013
As a computer scientist I really love the log2/exp2 key in Tech Calc 64. There are plenty of good calculators but none else provides such a key. I would love to see log2 and exp2 as separate keys, at least in a customizable keyboard. This is just similar to sqr and sqrt, tan and arctan, ln and exp, etc. The font and color scheme in the current version is not optimal for mobile devices. I would prefer light foreground (letter/digit) on darker background for both the keyboard and the display. Many thanks.
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A Google user
October 9, 2014
very helpful for maths lovers
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What's new

Compatible with Android 13.
Compatible with Android 12.
v1.6 Corresponded to Android 10 or above.
v1.5 The write permission request to the external storage was erroneously included, deleted it.
v1.4 Corresponded to Android 8 or above.
v1.3 Changed MSB to sign bit at 8,16,32 bit mode of HEX, BIN.