More than validation: engineering guidance
An expanded four-level ERROR / WARNING / NOTE / GUIDANCE system helps distinguish blocking problems, potential concerns, informative observations and practical design guidance.
Compare the Editions
Free WEB provides quick preliminary concrete mix proportions. Master Edition extends the design process with a dedicated plasticising admixture module, two-fraction coarse aggregate design, a more comprehensive engineering message system, aggregate moisture corrections, costing, and professionally organised Excel outputs.
FREE WEB Fast preliminary calculations MASTER EDITION Expanded Excel-based engineering workflow
Feature Comparison
Both editions support preliminary proportioning. Master Edition goes further with additional design choices, structured engineering feedback, admixture calculations, production-oriented quantities, cost analysis and ready-to-use worksheets.
| Capability | Free WEB | Master Edition |
|---|---|---|
| Browser-based access | Yes — no installation | Excel workbook |
| Preliminary proportions for 1 m³ | Yes | Yes |
| Selected EN 206-related design constraints | Yes | Yes |
| Strength and exposure class assessment | Yes — one exposure class | Expanded exposure-class assessment |
| Governing W/C and minimum cement content | Yes | Yes |
| Optional user-defined W/C and cement content | Yes | Yes |
| Engineering feedback and decision support | Basic input validation | Expanded ERROR / WARNING / NOTE / GUIDANCE system |
| Absolute volume proportioning | Yes — fixed reference densities | Yes — built-in reference densities |
| Fine / coarse aggregate proportioning | Built-in Dmax-based coefficients | Built-in proportioning model |
| Two coarse aggregate fractions | Not included | Design mixes using two coarse aggregate fractions |
| Aggregate moisture and absorption corrections | Not included | Included |
| Production batching quantities | Not included | Included |
| Admixture calculations | Not included | Dedicated plasticising admixture module — select from a built-in list or define your own admixture |
| Plasticising admixture selection | Not included | Built-in admixture list and user-defined admixtures |
| Material cost estimation | Not included | Included |
| Engineering summaries and reporting | On-screen results | Dedicated Output Mix Design sheet — organised results for saving and printing |
| Aggregate absorption and free-water adjustment | Not included | Moisture and absorption corrections |
| Production mix recipe / batching sheet | Not included | Dedicated Concrete Mix Recipe (Batching Sheet), formatted for practical use and printing |
| Visual composition summary | On-screen constituent results | Mix Visual Summary — graphical and numerical analysis of constituent proportions |
| Cost breakdown | Not included | Mix Visual Summary — graphical and numerical breakdown of each constituent’s contribution to total cost |
| Printable production documentation | Not included | Saveable/printable engineering results and formatted mix recipe |
The comparison describes product capabilities, not a guarantee that a calculated mix meets all project or national requirements.
What Does Master Edition Add in Practice?
The real value is not simply a longer list of features. It is the ability to continue working with a preliminary mix instead of starting over in separate spreadsheets.
A dedicated plasticising admixture module
Work with plasticising admixtures selected from the built-in list or specify your own. Incorporate admixture calculations into mix development rather than handling them separately.
Two coarse aggregate fractions
Develop a mix with two separate coarse aggregate fractions — an option not available in Free WEB — for more flexible aggregate proportioning.
A clear, printable engineering result
The dedicated Output Mix Design worksheet presents calculated mix proportions and engineering information in an organised format, ready to save or print.
A practical concrete mix recipe
The Concrete Mix Recipe (Batching Sheet) provides a structured recipe with production-oriented quantities, including moisture-adjusted batching values, in a convenient printable layout.
See the mix — not just the numbers
The Mix Visual Summary worksheet presents numerical and graphical views of the percentage composition of the mix, making constituent proportions easier to interpret and communicate.
Understand where the money goes
Enter material prices to estimate mix cost and use Mix Visual Summary to examine each constituent’s contribution to total material cost.
Account for aggregate moisture
Apply aggregate moisture and absorption corrections to develop moisture-adjusted batching quantities and adjust the required added water.
One connected workflow: preliminary mix design → two-fraction aggregate and plasticising admixture options → engineering feedback → moisture-adjusted batching quantities → cost and visual analysis → printable mix design results and batching recipe.
Which Edition Should You Choose?
Free WEB — for a quick starting point
Choose the free calculator when you need a fast theoretical composition for 1 m³, want to explore design inputs or are studying concrete mix proportioning.
Master Edition — when the mix needs to go further
Choose Master for more demanding mix-development tasks: two coarse aggregate fractions, a dedicated plasticising admixture module with built-in and custom options, expanded ERROR / WARNING / NOTE / GUIDANCE messages, moisture corrections, cost analysis, visual summaries and printable outputs.
A practical example: Free WEB estimates constituent quantities for a preliminary 1 m³ mix. Master Edition can develop that design using two coarse aggregate fractions and a selected or user-defined plasticising admixture, provide more detailed engineering messages, calculate moisture-adjusted batching quantities, analyse composition and cost, and present the results as printable worksheets and a concrete mix recipe.
Get Master Edition
The Master Edition is available through multiple sales platforms. Select your preferred marketplace on the dedicated purchase page.
Purchase-page links will become active when the site pages are published.