If you are new to homebrewing, you may expect every beer to finish at a specific number.

You may see a recipe that says:

Original Gravity: 1.050
Final Gravity: 1.010

Then you measure your beer and get 1.014.

Is something wrong? Usually, no.

There is no single correct final gravity for beer. Final gravity depends on the recipe, yeast, mash process, fermentation conditions, and other factors.

The important question is not only “What is my final gravity?”

It is: “Is my final gravity reasonable for this beer, and has it remained stable?”

What Is Final Gravity?

Final gravity, or FG, is the specific gravity of your beer after fermentation is complete.

Specific gravity measures the density of the liquid compared with water.

Water has a specific gravity of approximately 1.000.

Before fermentation, wort contains sugars and other dissolved material. This makes it denser than water. During fermentation, yeast consumes fermentable sugars. The beer becomes less dense.

The final gravity is the reading that remains after fermentation is complete.

What Is a Typical Beer Final Gravity?

Many beers finish somewhere between approximately:

1.005 and 1.020

However, this is only a general range. Some beers finish below 1.005. Some finish above 1.020. The correct final gravity depends on the beer style and recipe.

A dry light beer may finish near 1.005. A full-bodied stout may finish near 1.015 or higher. A strong, sweet beer can finish even higher.

Do not use a single target for every beer.

Final Gravity by Beer Style

The following ranges are general examples.

Actual recipes can fall outside these ranges.

Beer type	Approximate final gravity
Light lager	1.004–1.010
American pale ale	1.008–1.014
IPA	1.008–1.016
Wheat beer	1.008–1.014
Amber ale	1.010–1.016
Brown ale	1.010–1.018
Porter	1.010–1.018
Stout	1.010–1.020+
Belgian strong ale	1.008–1.016
Barleywine	1.015–1.030+

These ranges are not rules.

Your recipe may intentionally produce a different result.

Why Do Different Beers Have Different Final Gravities?

Recipes contain different amounts and types of fermentable material. Some ingredients produce sugars that yeast can easily ferment. Other ingredients produce compounds that yeast cannot ferment.

The result is a different amount of material remaining after fermentation. Brewing processes also affect fermentability. This means that two beers with the same original gravity can have different final gravities.

Does a Lower Final Gravity Mean a Better Beer?

No. A lower final gravity usually means a drier beer. That may be exactly what the recipe requires. It may also be wrong for the beer style.

For example, a stout can benefit from more body. A very low final gravity could make the beer feel thin. A light lager may be designed to finish very dry. The goal is not the lowest possible gravity, but rather the appropriate gravity for the beer.

Does a Higher Final Gravity Mean a Sweeter Beer?

Often, but not always. A higher final gravity means more dissolved material remains.

Some of this material can contribute to:

• Sweetness.
• Body.
• Fullness.
• Texture.

However, final gravity is not a direct measurement of sweetness. Different compounds affect flavor.

A beer with the same final gravity can taste different depending on its ingredients, bitterness, alcohol, acidity, and carbonation.

What Is Apparent Attenuation?

Attenuation describes how much of the original extract was fermented.

A common formula is:

Attenuation = (OG − FG) ÷ (OG − 1.000) × 100

For example:

• OG = 1.050
• FG = 1.010

The apparent attenuation is approximately:

80%

This means the yeast reduced the gravity by about 80% of the difference between the original gravity and 1.000. Yeast manufacturers often provide an expected attenuation range. This can help you estimate the likely final gravity.

How Does Yeast Affect Final Gravity?

Yeast strain is one of the most important factors. Different yeast strains have different attenuation characteristics. A highly attenuative yeast can consume more fermentable sugars. The beer can finish at a lower gravity.

A lower-attenuating yeast can leave more material behind. The beer can finish at a higher gravity. Yeast selection is therefore an important part of recipe design.

How Does Mash Temperature Affect Final Gravity?

Mash temperature can affect fermentability in all-grain brewing. A lower mash temperature generally favors a more fermentable wort. This can allow yeast to produce a lower final gravity.

A higher mash temperature can produce more less-fermentable sugars and dextrins. This can produce a fuller beer with a higher final gravity. This is a general effect.

The actual result also depends on the malt, mash schedule, yeast, and other brewing conditions.

Can Extract Brewing Affect Final Gravity?

Yes. Malt extract already contains the sugars created during the manufacturer’s mash process. You do not control that mash directly.

Different extracts can therefore produce different fermentation results. Extract brewing can still produce excellent beer. Do not assume that a particular final gravity is impossible simply because you are using extract.

How Does Original Gravity Affect Final Gravity?

OG and FG are related, but a high OG does not automatically produce a high FG.

For example:

Beer A

OG: 1.050
FG: 1.010

Beer B

OG: 1.070
FG: 1.010

Both beers can finish at the same gravity. Beer B simply started with more dissolved material and fermented more of it. A high-gravity beer may finish at a higher FG. It does not have to.

What If My Final Gravity Is Higher Than the Recipe?

First, take another reading. Make sure you are reading the hydrometer correctly. Check the sample temperature. Then compare your reading with the recipe.

A difference of a few points is not necessarily a problem. For example, if a recipe predicts 1.010 and you measure 1.013, the beer may still be completely finished. If the gravity is much higher than expected, investigate.

What If My Beer Finishes at 1.020?

That may be completely normal. Some beers are designed to finish around 1.020. A strong stout, sweet beer, or full-bodied ale may have a relatively high final gravity.

However, if your recipe predicts 1.010 and your beer is stuck at 1.020, you should investigate before packaging. The important question is whether the gravity is stable.

What If My Final Gravity Is 1.000?

That can be normal for some beers. A very dry beer can finish close to 1.000. However, a beer that finishes at 1.000 may be unusually dry depending on the recipe.

If you expected a much higher final gravity, investigate the cause.

Check:

• Yeast strain.
• Fermentation temperature.
• Recipe fermentability.
• Mash temperature.
• Original gravity.
• Hydrometer accuracy.

Can Beer Finish Below 1.000?

Yes, although it is less common. Alcohol is less dense than water. A sufficiently dry beer can therefore have a specific gravity below 1.000. Do not assume that a reading below 1.000 automatically means that your hydrometer is wrong.

However, verify unusual readings carefully.

How Do I Know If My Beer Is Actually Finished?

Use a hydrometer.

Do not rely on:

• A quiet airlock.
• No visible bubbles.
• A thick yeast layer.
• The beer looking clear.
• A specific number of days passing.

Take a gravity reading. Take another reading later. If the readings are stable, fermentation is likely complete.

For example:

Monday: 1.012

Wednesday: 1.012

That provides much stronger evidence that fermentation has finished.

Why Is a Stable Gravity More Important Than a Target Gravity?

Recipes provide expected numbers. Fermentation is a biological process. Real batches can vary.

• Your yeast may attenuate differently.
• Your mash may have a different fermentability.
• Your fermentation temperature may differ.
• Your ingredients may differ.

Because of these variables, your beer does not need to reach the exact FG printed in the recipe. A stable gravity is more important.

What Causes a High Final Gravity?

Several factors can produce a higher-than-expected FG.

Low Fermentation Temperature

Yeast can become less active when the temperature is too low.

High Original Gravity

High-gravity wort can be more difficult for yeast.

Low Yeast Health

Old or poorly stored yeast may not ferment efficiently.

Insufficient Yeast

A high-gravity beer may require a larger yeast pitch.

Low Oxygen Before Fermentation

Yeast needs oxygen during the early growth stage.

Poor oxygenation can affect fermentation performance.

Low Nutrient Availability

Yeast requires nutrients for healthy growth and fermentation.

Low Fermentability

The wort may contain more unfermentable material than expected.

Yeast Alcohol Tolerance

Some yeast strains stop working as alcohol levels increase.

What Causes a Low Final Gravity?

A lower-than-expected FG can also happen.

Possible causes include:

• A highly attenuative yeast.
• A highly fermentable wort.
• A lower mash temperature.
• Higher fermentation temperature.
• Different yeast than the recipe specified.
• Enzymatic activity that produced more fermentable sugar.

A low FG is not automatically a problem. It may simply produce a drier beer.

Should I Add More Yeast if My FG Is High?

Not automatically.

First determine whether fermentation is actually stuck. Take another gravity reading. If the gravity is stable and higher than expected, investigate the recipe and fermentation conditions.

Adding yeast without understanding the problem may not solve it. If the beer is genuinely stuck, you can then consider appropriate methods for restarting fermentation.

Should I Raise the Temperature?

Raising the temperature can sometimes help a sluggish fermentation. This is commonly called a diacetyl rest for certain lager fermentations. For some ales, allowing the beer to warm slightly near the end of fermentation can also encourage yeast activity.

Do not make a large temperature change without considering the yeast strain and beer style.

Can I Bottle if My Final Gravity Is High?

Maybe.

A high final gravity is not automatically unsafe. The critical question is whether fermentation is complete. If the gravity is still falling, do not bottle. More fermentation inside a sealed bottle can produce excessive pressure. This can cause bottles to leak, break, or burst.

If the gravity is stable and the beer is otherwise ready, a higher-than-expected FG can be acceptable.

Does Final Gravity Determine Alcohol Content?

Not by itself. You need the original gravity as well.

A common estimate is:

ABV ≈ (OG − FG) × 131.25

For example:

OG: 1.060
FG: 1.010

Estimated ABV:

(1.060 − 1.010) × 131.25 = about 6.6% ABV

The exact alcohol content can differ from this estimate.

What Final Gravity Should My IPA Have?

Many IPAs finish somewhere around:

1.008–1.016

A modern, dry IPA may finish toward the lower end. A fuller IPA may finish higher. A very high FG can make an IPA taste heavier and sweeter.

This can reduce the impression of bitterness. However, there is no single correct IPA final gravity.

What Final Gravity Should My Stout Have?

Stouts can have a higher final gravity than many pale beers.

A typical stout might finish around: 1.010–1.020

Some stronger or sweeter stouts can finish considerably higher. A full-bodied stout can benefit from residual sugars and dextrins. Do not try to force a stout to finish as dry as a light lager.

What Final Gravity Should My Lager Have?

Many lagers finish relatively dry.

A common range might be: 1.004–1.012

However, the beer style matters. A light lager and a bock do not need to finish at the same gravity.

What Final Gravity Should My Wheat Beer Have?

Many wheat beers finish around: 1.008–1.014

The exact value depends on the recipe and yeast. Some wheat beer styles can finish higher.

Again, use the recipe and yeast specifications as a guide.

What Final Gravity Should a High-Gravity Beer Have?

There is no universal number.

Strong ales, barleywines, imperial stouts, and other high-gravity beers can finish at significantly different gravities. A high OG often creates a higher FG. However, a highly attenuative yeast can produce a surprisingly dry strong beer.

High-gravity fermentation also creates additional stress for yeast.

Can I Change the Final Gravity of My Recipe?

Yes. Brewers can influence final gravity during recipe design.

Factors include:

• Yeast strain.
• Mash temperature.
• Mash duration.
• Grain selection.
• Sugar additions.
• Fermentation temperature.
• Yeast pitch rate.
• Fermentation management.

This is one reason experienced brewers can design beers with specific body and dryness.

What Equipment Do I Need to Check Final Gravity?

A basic setup is simple.

You need:

• A brewing hydrometer.
• A hydrometer test jar.
• A sampling tool.
• A thermometer.
• Sanitizer.

A refractometer can also measure gravity. However, alcohol affects refractometer readings after fermentation begins. You must use an appropriate correction calculation.

For beginners, a hydrometer is usually easier. Check out our article comparing hydrometers and refractometers.

What If My Hydrometer Says 1.012 but the Recipe Says 1.010?

That is not necessarily a problem. Two gravity points is a small difference.

Check that:

• Your hydrometer is accurate.
• You read the meniscus correctly.
• You accounted for temperature.
• Your sample does not contain excessive bubbles.

If the reading is stable, the beer is probably finished. Taste the beer.

The recipe’s target is a guide, not a command.

What If My Beer Is 10 Points Higher Than Expected?

A large difference deserves more attention.

For example, if the recipe expects 1.010 and your beer stops at 1.020, check the fermentation. Confirm that your hydrometer reading is correct.

Then consider:

• Fermentation temperature.
• Yeast health.
• Yeast strain.
• Original gravity.
• Mash temperature.
• Wort fermentability.
• Nutrient availability.
• Yeast pitch rate.

Do not bottle until you know that fermentation is complete.

The Bottom Line

There is no single final gravity that every beer should reach.

Many beers finish between approximately 1.005 and 1.020, but the appropriate number depends on the beer.

• A light lager may finish near 1.005.
• An IPA may finish around 1.010.
• A stout may finish around 1.015 or higher.
• A strong or sweet beer can finish considerably higher.

The most important things to remember are:

• Use your recipe and yeast strain as a starting point.
• Take hydrometer readings.
• Look for a stable gravity.
• Do not assume a high FG means fermentation is stuck.
• Do not assume a low FG means the beer is better.

Final gravity is a measurement, not a quality score.

A beer has reached the right final gravity when it has fermented as expected for its recipe, the gravity is stable, and the finished beer tastes the way you intended.