Advanced arithmetic tools
Ten arithmetic tools that start blank and use only the numbers you enter: mass units, concentration, dilution, mixture share, per-actuation volume, supply, a theoretical half-life curve, price per unit, device scale divisions and date arithmetic. No presets and no dosing advice.
The ten tools
- Mass units — Convert between g, mg, mcg and ng.
- Concentration and volume for an amount — Concentration from a labelled mass and volume, and the volume holding an amount you enter.
- Dilution (C1V1 = C2V2) — Solve the dilution equation for the one value you leave blank.
- Mixture composition — Each component's share of a mixture you describe.
- Amount per pump actuation — Amount per spray or pump from a labelled concentration and actuation volume.
- Supply count, dates and cost — How many uses a supply holds, the date it runs out and its cost, from your own numbers.
- Theoretical half-life curve — A textbook first-order decay curve for a half-life you enter; not a body level.
- Price per unit and cost comparison — Compare price per mg or per unit across listings you enter.
- Device scale divisions — What one marked division on a device scale holds.
- Date after a label interval — A calendar date a label's stated interval falls on.
Mass units
Convert between g, mg, mcg and ng.
Concentration and volume for an amount
Concentration from a labelled mass and volume, and the volume holding an amount you enter.
Dilution (C1V1 = C2V2)
Solve the dilution equation for the one value you leave blank.
Mixture composition
Each component's share of a mixture you describe.
Amount per pump actuation
Amount per spray or pump from a labelled concentration and actuation volume.
Supply count, dates and cost
How many uses a supply holds, the date it runs out and its cost, from your own numbers.
Theoretical half-life curve
A textbook first-order decay curve for a half-life you enter; not a body level.
Price per unit and cost comparison
Compare price per mg or per unit across listings you enter.
Device scale divisions
What one marked division on a device scale holds.
Date after a label interval
A calendar date a label's stated interval falls on.
Educational use only, never medical advice. No doses.