e liquid calculator - Aaron Graves, PhDude Replica

DIY E-Liquid Mixing Calculator

Enter your target recipe and get exact mL amounts for nicotine base, PG, VG, and flavor concentrate.

Final bottle size (mL)

Target nicotine strength (mg/mL)

Nicotine base strength (mg/mL)

Flavor percentage (%)

Target PG (%)

Target VG (%)

Nicotine base PG (%)

Nicotine base VG (%)

Flavor carrier

Your results will appear here after calculation.

Safety note: Nicotine is toxic in concentrated form. Wear gloves, avoid skin contact, label all bottles clearly, and keep supplies away from children and pets.

How this e liquid calculator works

An e liquid calculator helps you build a DIY vape recipe with accurate measurements. Instead of guessing how much nicotine base, propylene glycol (PG), vegetable glycerin (VG), and flavoring to use, you define your target specs and let math do the work.

This tool calculates exact milliliter amounts for each ingredient so your final bottle reaches the nicotine strength and PG/VG ratio you selected. That means more consistency between batches and less wasted material.

Core formula

The nicotine part of the calculation is straightforward:

Nicotine base needed (mL) = (Target mg/mL × Final volume mL) ÷ Base nicotine mg/mL

Once nicotine and flavor volumes are known, the calculator subtracts their PG/VG contribution from your desired total PG and VG amounts, then fills the remainder with plain PG and VG.

Step-by-step: entering your recipe

Final bottle size: total amount of e liquid you want to make (for example, 30 mL, 60 mL, or 120 mL).
Target nicotine strength: final nicotine concentration of the finished juice.
Nicotine base strength: concentration of your diluted nicotine stock (commonly 48 mg/mL or 100 mg/mL).
Flavor percentage: total percentage of flavor concentrates in your recipe.
Target PG/VG ratio: final viscosity and throat-hit profile (e.g., 30/70, 50/50).
Nicotine base carrier: whether your nicotine base is in PG, VG, or a mix.
Flavor carrier: most concentrates are PG-based, but this can vary.

What PG and VG change in a mix

PG (Propylene Glycol)

Thinner liquid consistency
Stronger throat hit
Usually carries flavor intensity well

VG (Vegetable Glycerin)

Thicker liquid consistency
Smoother inhale
Denser vapor production

A higher VG blend can feel smoother, while a higher PG blend can feel sharper and more flavor-forward. The right ratio depends on your device, coil, and personal preference.

Example mix

Suppose you want to make 60 mL at 3 mg/mL, with 30/70 PG/VG and 10% flavor, using 100 mg/mL nicotine in PG.

Nicotine base: 1.8 mL
Flavor concentrate: 6.0 mL
Additional PG: 10.2 mL
Additional VG: 42.0 mL

Total: 60 mL. This is exactly the kind of output the calculator provides instantly.

Common mixing mistakes to avoid

Using the wrong nicotine base concentration in calculations
Ignoring the PG/VG contribution from nicotine and flavor concentrates
Using percentages that add up incorrectly (target PG + target VG should equal 100%)
Not recording recipes for repeatability
Skipping safety gear when handling concentrated nicotine

Safety and legal considerations

DIY e liquid mixing is for adults only and may be regulated differently depending on your location. Always follow local laws and product labeling requirements. Nicotine can be hazardous; use gloves, eye protection, and precise tools such as syringes or a digital scale.

Store nicotine base in tightly sealed containers away from heat, light, children, and pets. If a recipe tastes harsh or off, do not keep using it blindly. Verify measurements and ingredients first.

Final thoughts

A dependable e liquid calculator saves time, improves consistency, and helps reduce mixing errors. Whether you are making your first 30 mL bottle or scaling up your all-day recipe, accurate math gives you better control over flavor, throat hit, and nicotine strength.