How Much Beef Fat to Make Tallow? Yield Calculator and Charts

To make 1 pound of tallow, start with about 1.4 pounds of clean kidney suet, 1.7 pounds of back fat or clean trim, or 2.2 pounds of meaty mixed trim. Rendering removes water, connective tissue, and meat, so the jar always weighs less than the raw fat: roughly 65-80% for suet, 55-65% for back fat, and 40-55% for scrappy trim.

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Tallow Yield by Fat Type

Suet yields the most because it is nearly all fat: USDA FoodData Central lists raw beef suet at about 94 grams of fat per 100 grams. Trim carries more water, meat, and connective tissue, none of which ends up in the jar.

These are planning ranges, not guarantees. Two cooks with the same fat can land 5-10 points apart depending on dice size, heat, and straining. If you tend to trim heavily or render hot, plan with the lower number.

The Two Formulas

Tallow you’ll get:

Tallow (lb) = raw fat (lb) × yield

Example: 5 lb of suet × 0.70 = 3.5 lb of tallow.

Fat you need to buy:

Raw fat needed (lb) = target tallow (lb) ÷ yield

Example: you want 3 lb of tallow from back fat. 3 ÷ 0.60 = 5 lb of back fat. Round up to the next half pound, since trimming always loses a little.

Weigh the fat instead of estimating by volume. A basic kitchen scale such as the Etekcity digital food scale reads in pounds, ounces, and grams, which also helps if you move on to soap recipes.

Raw Fat to Tallow Chart

Using the planning numbers above:

Target Tallow to Raw Fat Chart

How Many Pounds of Beef Tallow in a Gallon?

About 7.5 pounds. Liquid tallow weighs roughly 0.9 grams per milliliter, a little less than water, so a US gallon (3.785 liters) holds about 3.4 kilograms. That works out to:

• 1 pound of tallow ≈ 2 cups
• 1 quart ≈ 1.9 pounds
• 1 gallon ≈ 7.5 pounds

These are close enough for planning fryer fills and jar counts. Solid tallow packs slightly differently than liquid, so weigh it when a recipe needs precision, such as soap.

How Much Tallow From One Cow?

It depends on how much fat the processor saves for you. The suet (the kidney, pelvic, and heart fat that USDA graders estimate as a percentage of carcass weight) is commonly around 2-4% of the carcass.

A rough estimate:

Back fat and trim fat add more, sometimes a lot more, but how much depends entirely on how the butcher cuts and trims. If you buy a quarter, half, or whole beef, ask the processor to save the suet and trim fat for you; otherwise it’s often discarded. For more on sourcing, see the best beef fat sources for rendering and the best cuts for tallow.

How Much Tallow Do You Need for Common Uses?

Deep-frying fat can be strained and reused several times, so the first fill is the big one.

How Much Beef Tallow to Use When Cooking

• In place of oil: swap 1:1. One tablespoon of solid tallow melts to about one tablespoon of liquid fat.
• In place of butter: butter is about 80% fat and the rest is mostly water, while tallow is essentially 100% fat. Use roughly ¾ to ⅞ as much tallow as the butter called for, and add a splash of liquid in baking if the dough seems dry.
• In place of shortening or lard: swap 1:1.

Where the Missing Weight Goes

If a pound of suet gives you about 11 ounces of tallow, the rest is:

• Water that evaporates during rendering (most of the steam in the first hour)
• Cracklings, the protein and connective tissue left after the fat melts out. They’re edible.
• Fat trapped in the cracklings, some of which you can’t recover no matter how you strain
• Fat left on equipment, a thin film on the pot, cloth, and strainer

Trim loses more to meat and connective tissue, which is why its yield is lower.

What Changes Your Yield

How clean the fat is. Trimming away meat, silver skin, and membrane before rendering raises yield per pound of what goes into the pot.

Dice size. Half-inch cubes or ground fat release more fat than 2-inch chunks, which can leave unrendered fat in the center.

Heat. Low, steady heat (liquid fat around 200-250°F) extracts fat thoroughly. High heat browns the outside of the pieces and can trap fat inside while scorching the batch. See what temperature beef fat renders at.

How long you go. Pale, soft cracklings still hold fat. Golden, shrunken cracklings have given up most of theirs. Going past golden adds little yield and risks burnt flavor.

Straining. Strain while the fat is hot so it flows freely. Letting the cracklings drain for a few extra minutes recovers more fat; pressing them recovers a bit more but clouds the tallow.

How to Get the Most Tallow From Your Fat

1. Chill the fat, then cut it into ½-inch pieces or pulse it in a food processor.
2. Trim meat and membrane before weighing, so your yield math is based on usable fat.
3. Render low and slow; the full method is in how to render beef tallow at home.
4. Stir regularly early on to break up clumps.
5. Strain hot, and let the cracklings drain fully before discarding or snacking on them.

Is Rendering Cheaper Than Buying?

Usually, if you have a butcher who sells suet cheaply or gives it away. The cost of rendered tallow is the price of the raw fat divided by your yield, plus a few hours of mostly passive time. It stops making sense if suet is expensive in your area, you can’t find clean fat, or you only need a small amount.

If you’d rather skip rendering, bulk jars cover large jobs: the 100% Pure Grass-Fed Beef Tallow (4 lbs) for everyday cooking, or the Cornhusker Kitchen Grass-Fed Beef Tallow 7.5 lb for filling a deep fryer. For skincare batches, the deodorized Traverse Bay 32 oz saves you the double strain.

Planning Jars and Storage

• A pint jar holds a little under 1 pound of tallow with headroom.
• A quart jar holds a little under 2 pounds.
• A 5 lb suet render at 70% (about 3.5 lb of tallow) fills roughly two quart jars or four pint jars.

Smaller jars get used up faster once opened, which helps freshness. Sealed, well-strained tallow keeps for months in a cool pantry and a year or more in the fridge or freezer. See how to store rendered beef tallow.

Frequently Asked Questions

How much beef fat do I need to make tallow?

About 1.4 pounds of suet, 1.7 pounds of back fat, or 2.2 pounds of meaty trim for each pound of tallow you want.

How much tallow do you get from 1 pound of suet?

Roughly 10-13 ounces, depending on how clean the suet is and how thoroughly you render it.

How many pounds of beef tallow are in a gallon?

About 7.5 pounds.

How much tallow do you get from one cow?

From the suet alone, very roughly 7-25 pounds of tallow depending on carcass size and how much kidney fat the animal carried. Saving trim and back fat can add substantially more.

Why did my batch yield less than expected?

The usual causes are fat with a lot of meat or sinew, large dice, heat that was too high, or stopping while the cracklings were still pale. Try smaller pieces and a lower, longer render next time.

Does grass-fed suet yield differently than grain-fed?

Any difference is small compared with the normal batch-to-batch variation. Plan with the same numbers.

Bottom Line

Plan on 70% yield for clean suet, 60% for back fat, and 45% for meaty trim. Multiply raw weight by that number to see what you’ll get, or divide the tallow you need by it to see what to buy. A gallon of tallow weighs about 7.5 pounds, and one pound is about two cups.