A good starting dose for edibles is 2.5 mg of THC. Pick 1 to 2.5 mg if you are new to cannabis or sensitive to it, and 5 mg if you already smoke or vape. An edible dosage calculator turns that target into a real piece of the product: divide your target dose by the total mg of THC in the package, then multiply by the number of pieces.

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What dose should a first-timer pick?

California, Colorado, and other legal states cap a single serving at 10 mg THC and a whole package at 100 mg. That cap is a legal limit, not a suggested first dose.

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How do you use an edibles calculator?

  1. Find the total THC in the package, for example 100 mg.
  2. Count the pieces, for example 10 gummies.
  3. Divide total THC by pieces: 100 ÷ 10 = 10 mg per gummy.
  4. Divide your target dose by mg per piece: 2.5 ÷ 10 = 0.25 of a gummy.

A 10 mg gummy cut in half gives 5 mg, and a quarter gives 2.5 mg. A calculator runs this math for you and handles odd package sizes, like a 90 mg chocolate bar with 12 squares.

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Why does a small edible hit harder than a joint?

Your liver converts swallowed THC into 11-hydroxy-THC, a compound that reaches the brain with more punch. Onset runs 30 to 120 minutes, the peak lands around 2 to 4 hours, and effects can hold for 6 to 8 hours.

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Smoked THC reaches the brain in minutes and fades in 1 to 3 hours. That timing gap is why people redose too early and end up far past their target.

How long should you wait before taking more?

Wait 2 hours before a second dose. Drinks and nano-emulsion products can start in 15 to 30 minutes, but a slow-metabolizing gummy can take the full 2 hours.

Set a timer. Feeling nothing at 90 minutes is normal, not proof the dose failed.

What changes your dose?

Is 10 mg too much for a beginner?

Often, yes. 10 mg is the standard single serving in legal markets, and many first-timers get anxiety, a racing heart, or a heavy body load at that level. Start at 2.5 mg, then move up 2.5 mg at a time on later sessions.

How do you split a gummy into 2.5 mg?

Cut a 10 mg gummy into quarters with a warm knife. Soft gummies cut clean; hard candy and baked goods crumble.

When cutting fails, buy a product built for small doses: 2.5 mg mints, low-dose chews, or a tincture with a dropper marked in 1 mg steps.

Frequently asked questions

Does the calculator work for drinks and tinctures?

Yes. Use the total mg of THC in the bottle and the liquid volume as your piece count. A 100 mg tincture with 20 mL of liquid works out to 5 mg per mL, so 0.5 mL is 2.5 mg.

What if the label lists THC per serving, not per package?

Multiply serving mg by the number of servings in the package. A label that reads "10 mg per serving, 10 servings per package" means 100 mg total, and one serving is 10 mg.

Is a 2.5 mg edible enough to feel anything?

For most adults, yes, a light body buzz. People with high tolerance may feel nothing at 2.5 mg and should open at 5 mg.

Can you build tolerance to edibles?

Yes, and it climbs fast with daily use. Take 2 days off each week to keep your starting dose where it is.

What should you do if you took too much?

Stay calm, drink water, and remember there are no confirmed deaths from THC alone. Effects peak in 2 to 4 hours and then fade. Sit somewhere comfortable, and call a doctor if chest pain or severe panic hits.

The short version

Start at 2.5 mg THC, wait 2 hours, and raise the dose by 2.5 mg on your next session if the effect was too light. Run every new product through the calculator before you open the bag, because package totals and piece counts vary more than labels suggest.