A pack price tells you what you will spend at checkout. Cost per cup tells you what that purchase means for your daily routine. To calculate it for loose tea, divide the price by the net weight, then multiply by the amount you use for one brew.
The arithmetic is simple. The useful part is choosing an honest serving size: your actual mug, your preferred dose and the number of infusions you really drink. A cheap-looking tin can be costly per serving, while a larger pack can save very little if half of it goes unused.
Use three numbers: price, weight and dose
Tea cost per brew = pack price ÷ net tea weight × tea used per brew. Keep both weights in the same unit. Grams are convenient when your scale measures grams. Use net tea weight, excluding the tin or pouch.
For a hypothetical $12 pack containing 100 g, each gram costs $0.12. A 3 g portion costs $0.36. That is the leaf cost for one brew, before shipping, tax, water, energy, milk or sweetener. It is not a quoted market price or a recommended dose.
If the label gives a spoon measure, weigh the amount you actually scoop when possible. You do not need laboratory precision; you need a repeatable estimate. If your scale cannot resolve a small dose reliably, weigh several usual portions together and divide by the number of portions.
Compare the same drink
| Example | Pack | Your portion | Tea cost |
|---|---|---|---|
| Loose tea A | $12 / 100 g | 3 g | $0.36 |
| Loose tea B | $18 / 100 g | 2 g | $0.36 |
| Bagged tea C | $8 / 20 bags | 1 bag | $0.40 |
| Bagged tea C | $8 / 20 bags | 2 bags | $0.80 |
The examples deliberately use different portions. They show why price per gram and cost per drink answer different questions. They do not establish equal strength, equal taste or equivalent ingredients. Brew each tea as directed first, adjust to your preference, and use the resulting portion in your comparison.
For bags, divide the pack price by the bag count and multiply by the number used. A seller’s “cup” may differ from your large mug. For a pot shared by two people, calculate the whole brew first, then divide by the servings actually poured.
Treat advertised servings as an estimate
A useful serving claim explains the dose and water volume behind it. When those details are missing, ask the seller or work from net weight and preparation directions. Our tea-label checklist helps you find those details.
Sample packs also vary in weight. Adagio’s packaging guide says most of its loose samples contain 0.8 oz, while some fluffier varieties contain 0.4 oz. Those are the seller’s examples, not standard sample sizes across the tea industry. Check the specific listing before comparing packs.
Count repeat infusions you actually enjoy
If a $0.36 portion gives you two drinks you enjoy, its leaf cost averages $0.18 per drink. If you only drink the first infusion, the cost remains $0.36. Keep the drink volumes visible: two small tasting cups are not automatically equivalent to two large mugs.
Do not assume every tea will provide a fixed number of satisfying infusions. For budgeting, start with your current habit and add repeat infusions only after you have tried them. Energy, water and additions are separate costs each time.
Add checkout costs consistently
For a delivered-cost comparison, include the charges that apply to your actual order. If you buy only one tea, its delivered price can include the whole shipping charge. In a mixed order, choose a simple allocation method and use it consistently; show that it is an estimate.
Keep introductory discounts separate from the ordinary reorder price. A subscription price also carries a repeat-purchase commitment, so compare the terms as well as the first payment. Do not add unwanted tea just to reach a shipping threshold without checking the total you will spend.
Buy the amount you will use
A larger pack can have a lower price per gram and still be the wrong first purchase. Suppose a hypothetical $20 pack contains 200 g, but you use only 100 g before deciding you dislike it. At 2 g per brew, those 50 drinks effectively cost $0.40 each in tea. Using the entire pack would have brought the figure to $0.20.
For an unfamiliar tea, a small sampler buys information before quantity. Once you know your preference and usage rate, compare larger packs. Keep opened tea appropriately stored; our container comparison explains what to check.
Use cost per cup to make a purchase understandable, not to turn every cup into a contest for the lowest number. The useful choice is a tea you enjoy, in a quantity you will use, at a price that works for you.
Source checked 10 October 2026. All dollar amounts, doses and drink volumes in the worked examples are hypothetical. Illustrations are conceptual and show no real prices, measured portions or tested products.
Frequently asked questions
How do I calculate loose tea cost per cup?
Divide the pack price by its net tea weight, then multiply by the weight you use per brew. Keep both weights in the same unit.
How do I compare tea bags with loose tea?
For bags, divide price by bag count and multiply by bags used per drink. For loose tea, use price per gram times your dose. Compare the same drink volume.
Do repeat infusions reduce cost per cup?
They reduce the average leaf cost per drink if you actually enjoy and drink them. Keep the volume of each infusion visible and count other costs separately.
Should I include shipping?
Include it when comparing delivered costs. For a mixed order, use a consistent allocation method and label the result as an estimate.
Is a larger tea pack always better value?
No. A lower price per gram only helps if you use the tea. A smaller first purchase can limit spending on a tea you discover you dislike.
Are the prices in this guide real offers?
No. All worked dollar amounts are hypothetical examples to explain the calculation, not retail quotes or price benchmarks.