Days a jar lasts = net weight (g) ÷ daily serving (g). Check the serving size on your label; 300 mg is 0.3 g.
Resin and powder jars
| Net weight | 0.2 g a day | 0.3 g a day | 0.5 g a day |
|---|---|---|---|
| 15 g | 75 days | 50 days | 30 days |
| 20 g | 100 days | 66 days | 40 days |
| 30 g | 150 days | 100 days | 60 days |
| 50 g | 250 days | 166 days | 100 days |
| 60 g | 300 days | 200 days | 120 days |
Rounded down to whole days. Real-world duration is usually a little shorter because some resin stays on the scoop and jar.
Capsule packs
| Pack size | 1 a day | 2 a day |
|---|---|---|
| 30 capsules | 30 days | 15 days |
| 60 capsules | 60 days | 30 days |
| 90 capsules | 90 days | 45 days |
| 120 capsules | 120 days | 60 days |
Check whether the label’s “serving” is one capsule or two before using the table.
Why a jar runs out sooner than expected
- Inconsistent servingsA “pea-sized” amount can vary several-fold. Weighing keeps servings, and the jar, predictable; see measuring resin consistently.
- ResidueResin sticks to the scoop, lid and sides, especially in warm rooms.
- Moisture lossResin can firm up over time, which changes how much you scoop.
- SharingObvious, but often forgotten when comparing value.
Duration vs shelf life
How long a jar lasts is about use; how long it keeps is about storage and the best-before date on the label. A large jar is only good value if you’ll finish it before that date. Keep it sealed, cool and dry; see how to store resin and shelf life and expiry.
Turning duration into monthly cost
Divide the price by the number of days the jar lasts, then multiply by 30. A £30 jar that lasts 100 days costs £9.00 a month; one that lasts 60 days costs £15.00. The cost-per-gram calculator has ready-reckoner tables, and subscriptions and multi-buys covers when buying in bulk makes sense.
Common questions
How long does a 30 g jar of shilajit last?
150 days at 0.2 g a day, 100 days at 0.3 g and 60 days at 0.5 g, before allowing for residue.
How long does a 15 g jar last?
75 days at 0.2 g a day, 50 days at 0.3 g and 30 days at 0.5 g.
Should I take more to finish a jar before it expires?
No. Stay within the serving on the label; there’s no evidence that more is better. See how to use shilajit.