Vitamin Dosage & Cost
Estimate how long a supplement bottle lasts and its monthly cost.
About Vitamin Dosage & Cost
The number of pills divided by the daily dose tells you how long a bottle lasts, and the price across that time becomes a monthly cost. Supplements vary widely in price-per-dose, so converting a bottle into a monthly number makes different brands comparable.
Formula
Vitamin Dosage & Cost
Days per bottle = pills / daily dose; monthly cost = price / days per bottle x 30
- daily dose
- Supplements per day based on the chosen schedule
Worked example
With the default values below, Vitamin Dosage & Cost returns Days per Bottle of 60.0. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Pills per bottleminimum 1
- 60
- Dosageone of Once daily, Twice daily, Every other day
- Once daily
- Bottle price
- 15
Results
- Days per Bottle
- 60.0
- Bottles per Year
- 6.1
- Cost per Month
- $7.50
Step by step
- 1Values used
- 2Vitamin Dosage & Cost
- 3Days per Bottle= 60.0
- 4Bottles per Year= 6.1
- 5Cost per Month= 7.50
Assumptions and limits
- The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Vitamin Dosage & Cost calculated?
Days per bottle = pills / daily dose; monthly cost = price / days per bottle x 30 The number of pills divided by the daily dose tells you how long a bottle lasts, and the price across that time becomes a monthly cost.
Why does Vitamin Dosage & Cost matter?
Supplements vary widely in price-per-dose, so converting a bottle into a monthly number makes different brands comparable.
What values do I need to enter?
This calculator takes 3 inputs: Pills per bottle, Dosage, Bottle price. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.