Estimate how many applications a tube or bottle can provide, what remains after complete services, and the direct product cost of each application.
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Interactive calculation requires JavaScript. The formulas, fictional worked example, limitations and FAQs below remain available without it.
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Entered and calculated values are not written to localStorage, sessionStorage, IndexedDB, cookies or URLs, and calculator actions send no value-bearing network request. A stripped path-only page view can be activated only through the separately reviewed central integration.
How the calculation works
Quantities are converted exactly to grams or millilitres before calculation. Mass and volume never cross-convert, and decimal arithmetic—not binary floating point—is authoritative.
Currency changes the label and formatting only. This calculator does not convert exchange rates.
Package yield and application cost
Unit cost
package price ÷ package quantity
Theoretical applications
package quantity ÷ average amount used
Complete applications
floor(theoretical applications)
Package remainder
package quantity − complete applications × average amount used
Salon Example Colour is a fictional 100 ml bottle costing A$18.00. An average service uses 12 ml.
Cost per ml
A$0.18/ml
Theoretical applications
8.33
Complete applications
8
Package remainder
4 ml
Cost per application
A$2.16
Practical yield limitations
Theoretical yield assumes every measurable unit is usable. Actual yield may be lower because of residue, dispensing variation or product loss.
Product can remain in a tube, bottle, pump, nozzle, bowl or applicator.
Dispensing and formula technique can vary between services.
Spills, evaporation, contamination or other product loss are not modelled.
The annual scenario is not inventory, reorder or purchasing management.
Frequently asked questions
What is the difference between theoretical and complete applications?
Theoretical applications can include a fraction. Complete applications counts only full services by rounding that figure down. The remainder shows what is left after those complete services.
Does this guarantee how many applications I will get?
No. The result is a mathematical estimate. Residue, dispensing variation, spills and product retained in tools can reduce practical yield.
Can I mix grams and millilitres?
No. Mass and volume are different dimensions. The calculator converts within mass units or within volume units and fails closed when they are mixed.
Is the annual scenario an inventory or reorder plan?
No. It is a planning estimate based on the service frequency entered. It does not track stock, suppliers, deliveries, reorder points or purchasing activity.
Where are my values stored?
Calculator values stay in the mounted browser component and clear when you reload or navigate away. They are not placed in the URL or saved to a TintLedger account by this tool.
Related TintLedger resources
Continue with current public tools and product-cost guidance.