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Calcimator

Essential Oil Diffuser Calculator

Drops per room volume for target scent intensity.

Inputs

Results

Essential Oil Drops

18

Run Time (hours)

10

Oil Volume (mL)0.9
Cost per Session ($)$1.80
Sessions per 15 mL Bottle16
Concentration (%)0.3
Diffuse On (min)45
Rest Off (min)45
How to Use This Calculator
  1. Enter the room size in square feet and your diffuser tank capacity in mL.
  2. Select scent intensity: 1 = light/subtle, 2 = medium, 3 = strong.
  3. Input your diffuser's mist output rate in mL/hr (check your manual; typically 20-40 mL/hr).
  4. Review the number of essential oil drops to add and the tank run time in hours.
  5. Follow the on/off cycle recommendations to avoid olfactory fatigue during extended sessions.

How the result changes with Room Size (sq ft)

Room Size (sq ft)Essential Oil DropsRun Time (hours)
2092310
7072910
1,3042910
1,8012910

What each input means

Room Size (sq ft)
Square footage of the room to scent.
Diffuser Tank (mL)
Water tank capacity in milliliters.
Scent Intensity (1-3)
1 = light/subtle, 2 = medium, 3 = strong.
Output Rate (mL/hr)
Mist output rate (typically 20-40 mL/hr).

What each result means

Essential Oil Drops
Number of drops to add to the diffuser.
Oil Volume (mL)
Total oil volume in milliliters.
Run Time (hours)
Hours until the tank needs refilling.
Cost per Session ($)
Estimated oil cost per fill (~$0.10/drop average).
Sessions per 15 mL Bottle
How many fills from a standard 15 mL bottle (~300 drops).
Concentration (%)
Oil-to-water concentration percentage.
Diffuse On (min)
Recommended continuous diffusion time.
Rest Off (min)
Recommended rest period between sessions.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Room Size (sq ft) = 200, Diffuser Tank (mL) = 300, Scent Intensity (1-3) = 2, Output Rate (mL/hr) = 30 = 4 input(s) provided
  2. Calculate Essential Oil Drops
    Essential Oil Drops
    18 = 18
  3. Calculate Run Time
    Run Time = diffuserCapacityMl / diffuserOutputMlPerHr
    10 = 10
  4. Calculate Oil Volume
    Oil Volume = totalDrops * 0.05
    0.9 = 0.9
  5. Calculate Cost per Session
    Cost per Session = totalDrops * 0.10
    1.8 = $1.8

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