Vape Juice Calculatorby Natchland

Mix your batch

Set the size, the VG/PG ratio, the nicotine and your flavours. You'll get exactly what goes in, by volume and by weight.

Recipe

ml
VG/PG ratio
PG
VG
More VGMore PG
First number is VG. More VG is thicker with bigger clouds, more PG carries flavour and gives more throat hit. Max VG adds no plain PG, only what your nicotine and flavours bring.
mg/ml
mg/ml

Freebase and nic salt mix the same way, use the strength printed on the bottle. Nic shots are usually 18mg in 50/50.

Flavours and additives

Most concentrates are PG. Use Water or Alcohol for things like distilled water or vodka.

What goes in

Your recipes

Kept in this browser

Costs and selling price

Add what you paid for each ingredient and how much came in it. Everything's worked out per bottle, so you can see what each one costs you and what you'd make at any price.

What you paid

IngredientPaidForPer mlIn batch
Ingredients total

Bottles and packaging

ml
Packaging, per bottle
Bottle, cap, label, box, child-proof seal
Gloves, syringes, postage bags, anything used up making it. Spread over every bottle.

Tax and fees

UK Vaping Products Duty
Charged on every 10ml of liquid since 1 October 2026, with or without nicotine
per 10ml
VAT registered
Your price then includes VAT, which goes to the tax office, not to you
% VAT
Selling fees, per sale
%
Card, marketplace or shop fees. Taken from what the customer pays.
Cost per bottle

Your price

Price guide

Tap a row to use that price
MarginChargeProfit eachPer batch

How the maths works

Every amount is worked out from the batch size. The nicotine base goes in first, because it's the only ingredient whose amount depends on its strength.

nicotine base ml = batch ml × nicotine you want ÷ base strength
flavour ml       = batch ml × flavour %

Each of those brings its own PG and VG with it. A 50/50 nic shot adds half its carrier as PG and half as VG, a PG flavour adds all PG. Whatever space is left is filled with plain PG and VG so the whole batch lands on your ratio.

VG to add = (PG and VG in the batch × VG %) − VG already in the base and flavours
PG to add = space left − VG to add

The ratio counts PG and VG only. The nicotine itself (an 18mg base is about 1.8% nicotine) and any water or alcohol sit outside it, so a 70/30 mix really is 70 parts VG to 30 parts PG. When your nicotine and flavours already bring more PG than the ratio allows, you'll see the closest mix you can make and the range that recipe can reach.

Weights

Mixing on a scale is more accurate than syringes. VG is thick enough that syringes run short. Grams use these densities:

PG 1.036 g/ml   VG 1.261 g/ml   nicotine 1.01 g/ml   water 1.000 g/ml   alcohol 0.789 g/ml

Flavour concentrates are weighed as whatever they're made in. Real concentrates vary a little either way, so a flavour's weight is close rather than exact.

Pricing

Cost per bottle is everything you spent on the batch, spread over the bottles it fills, plus packaging and duty on each one. Liquid left over that won't fill a bottle still counts as spent.

Margin is profit as a share of the price before VAT. Markup is profit as a share of your cost. A bottle costing 2.00 that sells for 4.00 is a 50% margin and a 100% markup. Fees come off what the customer pays, VAT included.

price before VAT = (cost per bottle + fixed fee) ÷ (1 − fee % × (1 + VAT %) − margin)

Selling in the UK

Rules change, so check gov.uk before you sell. As of October 2026:

  • Liquid with nicotine can't be stronger than 20mg/ml and has to be sold in bottles of 10ml or less. Bigger bottles have to be nicotine free (shortfills).
  • Every nicotine product has to be notified to the MHRA and published before it's sold.
  • Vaping Products Duty is £2.20 per 10ml from 1 October 2026, nicotine free liquid included. Makers and importers register with HMRC.
  • Sales are 18 and over only. From 29 October 2026 that covers nicotine free products too.

E-cigarette rules on gov.uk · Vaping Products Duty on gov.uk