Mortar Batch Scaling Calculator
Scale a known mortar formulation to a different production volume while preserving the original ingredient proportions. The calculator shows the scale factor and every adjusted ingredient quantity.
Enter the original mortar batch
Scaled mortar batch
| Ingredient | Original | Scaled | Change |
|---|
The mortar scaling formula
Every ingredient is multiplied by the same scale factor.
Scaled quantity = original quantity × scale factor
This preserves the ratios represented by the original formulation.
Worked example
If a 0.10 m³ reference batch contains 20 kg binder, 75 kg sand and 12 kg water, a 0.50 m³ target is five times larger.
Binder = 20 × 5 = 100 kg
Sand = 75 × 5 = 375 kg
Water should still be checked
Proportional scaling is arithmetic, not a guarantee that the final amount of mixing water should be used without adjustment. Aggregate moisture and absorption can alter the water actually added at the mixer.
Batch size versus yield
A nominal ingredient recipe does not necessarily mean its ingredient volumes add directly to the final hardened mortar volume. This tool assumes you already know the original batch basis and simply scales it.
Limitations
Do not use proportional scaling to substitute for mix design, product instructions, specification requirements or field trial procedures.
Frequently Asked Questions
How do I scale a mortar recipe?
Multiply every ingredient by target volume divided by original volume.
Does scaling change the ratio?
No.
Should water always scale exactly?
Not necessarily in actual production; check aggregate moisture and workability.
Can I scale down a batch?
Yes, provided the original volume is greater than zero.
Does this design mortar?
No.