Cannabis-to-Butter Ratio Guide: Dosage and Cost Per Batch

Cannabis-to-Butter Ratio Guide: Dosage and Cost Per Batch

Every cannabutter recipe starts with the same decision: how much cannabis per cup of butter? Get the ratio right and your edibles land where you aimed. Get it wrong and you've either wasted flower on butter stronger than anyone needs, or simmered an afternoon away for butter that barely works.

This guide covers the standard ratios, the actual potency numbers each one produces, the saturation ceiling where extra flower stops helping — and the part most guides skip: what each batch really costs, per serving and per milligram.

The Standard Cannabis-to-Butter Ratios

All numbers assume 20% THC flower, oven decarb (~90% efficiency), and 1 cup of butter (48 teaspoons). Formula details are in our cannabutter potency guide.

Ratio (per cup butter)	Strength	THC per teaspoon	Best for
3.5g (an eighth)	Mild	~13mg	Beginners, microdosing, everyday cooking
7g (a quarter)	Standard	~26mg	Most home bakers — the default
14g (a half)	Strong	~52mg	Experienced users, small-portion recipes
28g (a full ounce)	Maximum	~105mg	Concentrated recipes; approaching saturation

Two things worth noticing. First, potency scales linearly — double the flower, double the strength — so you can hit any target in between. Second, there's no "correct" row: a mild butter you can use generously is more practical for cooking than a strong butter you have to measure by the quarter-teaspoon. Punch your exact numbers into our free cannabutter ratio calculator to see mg-per-teaspoon for any combination before you commit the flower.

The Saturation Ceiling

Butter can only bind so much cannabinoid. Past roughly an ounce of flower per cup of butter, additional plant material stops adding meaningful potency — the fat is saturated, and you're donating THC to the compost. If you want stronger results than ~1oz/cup delivers, the move is less butter, not more flower, or switch to a more concentrated infusion like cannabis coconut oil, which some cooks find binds slightly more efficiently.

Choosing a Ratio Backwards From Your Recipe

The smarter way to pick a ratio: start from the dose you want to eat.

Say you're making 24 cookies with 1/2 cup (24 teaspoons) of butter, and you want 10mg cookies:

• Target: 24 cookies × 10mg = 240mg THC in the batch
• Per teaspoon of butter needed: 240 ÷ 24 = 10mg/tsp
• From the table: that's below the mild 3.5g ratio (~13mg/tsp) — so use the eighth-per-cup butter and cut it slightly with plain butter, or make a 2.5g/cup batch

Working backwards prevents the classic error of baking standard-strength butter into a recipe and discovering each cookie is a 26mg commitment. Our cannabis dosage calculator automates exactly this two-step math.

What a Batch of Cannabutter Actually Costs

Here's the math most guides skip. A batch is flower + butter + a few hours:

	Mild (3.5g)	Standard (7g)	Strong (14g)
Flower @ $10/g	$35	$70	$140
Butter (1 cup, quality unsalted)	$3	$3	$3
Total	~$38	~$73	~$143
Activated THC (approx.)	630mg	1,260mg	2,520mg
Cost per mg THC	~6¢	~5.8¢	~5.7¢
Cost per 10mg serving	~60¢	~58¢	~57¢

Flower prices vary a lot by region — at $5/g shake or homegrown, your cost per 10mg serving drops toward 30¢ or below; at $15/g top-shelf it climbs toward 90¢. Even so, compare that with dispensary edibles at $20–30 for a 100mg package ($2–3 per 10mg serving) and homemade butter runs roughly 3–5× cheaper per milligram, before you count the fun of making it.

Two cost tips: mid-shelf flower and even quality shake infuse nearly as well as top-shelf (you're extracting cannabinoids, not judging bag appeal), and buying a quarter instead of two eighths usually shaves the per-gram price.

Ratios for Oil Instead of Butter

The same ratios apply to coconut oil, ghee, and other fats — cannabinoids bind to any lipid. Coconut oil's higher saturated-fat content makes it marginally more efficient and it keeps longer at room temperature; our cannabis coconut oil recipe covers the differences. Whatever fat you choose, label the finished product with its mg-per-teaspoon — and store it properly so the potency you paid for keeps: see the edibles storage guide.

FAQ

How much weed do I need for 1 cup of cannabutter?

The standard is 7 grams (a quarter ounce) per cup of butter, which yields roughly 26mg THC per teaspoon with 20% flower. Use 3.5g for mild (~13mg/tsp) or 14g for strong (~52mg/tsp). Potency scales linearly between them.

What is the best ratio of cannabis to butter?

For most people: 7g per cup. It's potent enough that recipes need only modest amounts of butter, but not so strong that a slightly generous cookie becomes an ordeal. Beginners should start at 3.5g per cup.

Can I use less butter to make cannabutter stronger?

Yes — potency is flower divided by butter volume, so halving the butter doubles the mg-per-teaspoon. Just keep enough fat to fully submerge the flower during infusion, and remember you'll lose a tablespoon or two to the plant material when straining.

Is making cannabutter cheaper than buying edibles?

Substantially. At typical flower prices, homemade cannabutter works out to roughly 5–6 cents per mg of THC (about 60¢ per 10mg serving), versus $2–3 per 10mg serving for packaged dispensary edibles — about 3–5× cheaper, more if you use shake or homegrown.

Does more weed always mean stronger butter?

Only up to about an ounce per cup of butter. Beyond that the fat saturates and extra flower is wasted. For stronger results past that point, reduce the butter volume instead.