Molecular Weight Calculator for Windows

Used Molecular Weight Calculator for Windows?

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Editors’ Review

Download.com staffMarch 12, 2026

Monroe's utility precisely calculates molecular weights and percent compositions. It handles complex chemical formulas, offering advanced tools like a mole/mass calculator and formula finder for comprehensive chemical analysis.

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Pros
- Calculates molecular weights and percent compositions.
- Recognizes abbreviations, isotopes, hydrates, and parentheses.
- Includes a formula finder feature.
- Provides a mole/mass calculator.
- Offers an unknown percent composition solver.
Cons
- Requires MSVBVM50.Dll dependency for execution.
- Smaller download lacks an automated installer.

Molecular Weight Calculator for Windows

Used Molecular Weight Calculator for Windows?

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Full Specifications

GENERAL

Release: April 2, 2002

Latest update: March 12, 2026

Version: 6.12

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 2000
Windows 98
Windows XP
Windows 10
Windows NT
Windows 95

Additional Requirements: Windows 95/98/ME/NT/2000/XP

POPULARITY

Total Downloads: 1,407

Downloads Last Week: 0

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User Reviews

4.5/5

2 User Votes

Old but very good.
forluxorFebruary 23, 2011
Pros
It works on my 64-bit Windows 7 computer. It is intelligent in terms of recognizing decimal numbers and displaying the proper format of the chemical formula being entered so you'll see if the inputs are incorrect.
Cons
Have not found any.
Summary
I am very happy to find this old "acquaintance" that I first used more than 10 years ago. Have tried some of the newer ones, but none can do decimals or even work under the operating system (Win7 64-bit). I only use the M.W. calculations; don't know much about other parts of this program.
Just used for dilution calculator
September 3, 2009
Pros
I just downloaded for dilution calculator. good..first downloadable dilution calculator for molecular biology i could find..and basically works well so far
Cons
however, not as good as IDTs online calculator which is more geared towards giving you the actual volumes you need to pippet
Summary

Developer’s Description

Calculates molecular weights, percent compositions, and more.

Used to determine molecular1weights and percent compositions of molecules. It recognizes user-definable abbreviations,1isotopes, hydrates, and parentheses. The program also includes a formula finder1features, mole/mass calculator, and unknown percent composition solver. The1mwt4_3s.exe file includes MSVBVM50.Dll and an automated install procedure. See the home page for a smaller .Zip file without the install program.