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Alcohol meter for spirits

Updated: 22 October 2026

You have an unsweetened spirit and you want it nearer a drinking strength. An alcohol meter for spirits helps while that liquid is still mostly ethanol and water. Sugar, juice, and extract move the float, so the mark stops being the alcohol you added. Measure the clean spirit, dilute it, and only then flavour it. The [alcohol meter comparison](/hub/measuring-equipment/alcohol-meter) is where the five amazon.co.uk listings sit side by side. The jar, the meniscus, and the 20°C check live on [how to use an alcohol meter](/hub/measuring-equipment/alcohol-meter/sub/alcohol-meter-how-to-use). The Products Compared editorial team checked the listings on 20 October 2026 and did not run a lab test. A qualifying purchase through those links can earn a commission at no extra cost to you.

You have an unsweetened spirit and you want it nearer a drinking strength. An alcohol meter for spirits helps while that liquid is still mostly ethanol and water.

Our top picks

Thermometer World Thermometer World 0–100% spirit meter

Best overall

Thermometer World Thermometer World 0–100% spirit meter
9.2/10about £14.95
View offer
QWORK QWORK 0–80% alcohol refractometer

Alternative

QWORK QWORK 0–80% alcohol refractometer
8.2/10about £14.99
View offer
ACKKOR ACKKOR glass vinometer 0–25%

Best value

ACKKOR ACKKOR glass vinometer 0–25%
7.4/10about £5.59
View offer
On this page
  1. 1.The spirit the meter can see
  2. 2.Dilute before you flavour
  3. 3.Sugar hides the reading
  4. 4.What this page will not help you do

The spirit the meter can see

In this set, the instrument that matches a clean distillate is the Thermometer World IN-239, at £14.95, with a stated 0–100 vol % scale, a reference of about 20°C, and a 100 ml trial jar. Across 1,027 ratings the line is 4.5. UK reviews say a wine sample may not float. If the stem sinks in a sweet or fermented drink, you are looking at the wrong liquid, not at a spirit that reads 0%. The QWORK refractometer at £14.99 can stand in only while the sample is still that clean spirit, on a 0–80% scale. Reviews describe kombucha, alcohol-free beer, and caramel syrup producing high alcohol figures, so the 10°C to 30°C band does not cancel sugar. The alcohol meter buying guide separates those families if you have not chosen yet.

Dilute before you flavour

Bring the unsweetened spirit down with water, read it, and only then add flavour or sugar. Brew Mart, a UK home-brew shop, describes that order and talks about 40–60% as a typical spirit band and 25–35% as a typical liqueur band once you have watered the spirit down. A volume check from a UK stilling forum, not a test of these ASINs, shows why the arithmetic belongs on the unsweetened spirit. One worked example is 700 ml at 37.5% plus 200 ml of syrup, written as 700 × (37.5 / 900) = 29.16%, if those are the volumes you actually mixed. That 29.16% is the forum's arithmetic for alcohol already in the ethanol you added. It is not a mark you should expect from the float once the syrup is in the glass.
Thermometer World Thermometer World 0–100% spirit meter

Testsieger

Thermometer World Thermometer World 0–100% spirit meter
9.2/10about £14.95
View offer

Sugar hides the reading

Sugar and other extract change density. A spirit alcoholometer is calibrated for water and ethanol, so a sweeter liquid can sit at a mark that is not the alcohol by volume. Schedule 2 of the Alcoholic Products (Excise Duty) Regulations 2023 allows a density route for spirits that are alcohol and water. If the spirit contains other material, HM Revenue and Customs may require that material to be removed and the volume made up with water. A £14.95 stem is not that method. Suppose you proof a clean spirit to about 40% in the jar, then stir in syrup. The alcohol you added is still in the bottle, diluted by the extra volume, but the new mark is not a second ABV.

What this page will not help you do

Producing spirits in the United Kingdom needs an alcoholic products producer approval. GOV.UK's APPA guidance, read with section 84 of the Finance (No. 2) Act 2023, excludes spirits from the domestic-use exemption that covers some beer, wine, and cider made at home. Watering down a bottle you have already bought is not the same activity as distilling. If you are unsure whether you are producing spirit rather than diluting a purchase, read the GOV.UK page before you go any further. The ACKKOR capillary is a 0–25% dry-wine glass at £5.59, and two of its five UK reviews miss known samples. It is not a substitute for the 0–100 vol % stem on a clean distillate.

Common questions

When should I add sugar or flavour?
Add water first, read the unsweetened spirit, and only then add sugar or flavour. Brew Mart describes that order and talks about 40–60% as a typical spirit band and 25–35% as a typical liqueur band. Those are the shop’s serving targets, not a legal UK strength. Once syrup is in the glass, the float is no longer on the mixture it was graduated for.
Can I float the meter in a finished liqueur?
No. Sugar and extract change the density, so an alcoholometer does not give the alcohol by volume of a finished liqueur. If you need a figure for a label or for duty, Schedule 2 may require other material to be removed before a density reading. The 100 ml trial jar is the wrong instrument for that official job.
Does warming the spirit change the reading?
Yes. The Thermometer World listing is referenced at about 20°C, so a warm bottle will not sit on the same mark as a cool one. Let the spirit, the jar, and the meter come towards the same temperature before you read. This page does not supply a degree-by-degree correction, and a duty densimeter is not converted from another temperature either.
Is diluting a bought bottle the same as distilling?
No. Watering down a spirit you have already bought is not the same activity as producing spirits. Producing spirits needs an alcoholic products producer approval, and the domestic exemption on GOV.UK excludes spirits. This page does not describe a still. If you are unsure, read the GOV.UK APPA guidance before you do more than dilute a purchase.
What if I need a figure for a label or for duty?
Use the HM Revenue and Customs alcoholic products technical guide, not the kitchen stem. UK duty strength is percent by volume at 20°C. For spirits that are only alcohol and water, Schedule 2 points to a density method. If the liquid contains sugar or flavour, that material may have to be removed first. A £15 meter is not that method.

Related pages

Best alcohol meter

Alcohol meter

Alcohol meter buying guide: match the liquid first

How to use an alcohol meter without a wrong number

Alcohol meter vs hydrometer: gravity or a spirit dip

Sources

Public UK sources from the research digest. Shelf prices and star lines are the amazon.co.uk figures for these five listings. The price band is this set, not a market average. The gravity formula is a rule of thumb, not a tested accuracy.

  1. HMRC: alcoholic strength, section 11 (retrieved 22 October 2026)
  2. SI 2023/806 Schedule 2 (retrieved 22 October 2026)
  3. Laboratory Alcohol Table (retrieved 22 October 2026)
  4. GOV.UK: alcoholic products producer approval (retrieved 22 October 2026)
  5. Finance (No. 2) Act 2023, section 84 (retrieved 22 October 2026)
  6. OIML R 44 (1985): alcoholometers (retrieved 22 October 2026)
  7. Alcoholometers Regulations 1977 (retrieved 22 October 2026)
  8. Homebrew hydrometer scales (retrieved 22 October 2026)