The most common cigar-storage mistake is not the wrong humidity — it is the wrong amount of it. Too little humidification for the box and the RH drifts; too much in a small case and it is wasted. Getting the pack size right is simple once you match it to how many cigars you are storing.
This is a quick cigar humidity pack sizing guide for Humidi-Cure 73%, from a single travel tube to a full humidor.
The sizing chart
| Pack size | Cigars | Best for |
|---|---|---|
| 1.5 g | 1 | Single-cigar travel tube |
| 3 g | 1–2 | Small tube or pocket case |
| 4 g | 3–4 | Travel case |
| 8 g | 5–6 | Larger travel case / small box |
| 63 g | ~25 | Desktop humidor case |
All sizes hold 73% RH at ±2% — you are choosing capacity (and how long it lasts), not a different climate.
How to read the chart for your box
Match the pack to the enclosed space, not just the cigar count. A tightly packed travel case of 4 cigars needs a 4 g pack; the same 4 cigars rattling around a half-empty box has more air to condition and may want an 8 g. When in doubt, size up — extra capacity simply lasts longer, it does not push the RH past 73%.
Scaling to a humidor or aging cabinet
For larger storage, the rule of thumb is one 63 g packet per pound of leaf or per box interior, then add packs to cover the air volume. A 25-count desktop humidor is well served by a single 63 g; a large cabinet or tobacconist aging unit needs several, distributed through the space so RH stays even top to bottom. Place a humidity indicator card in the same enclosure to confirm the set point holds.
How long each pack lasts
In normal use a pack lasts roughly 3 months, but the real driver is how airtight the humidor is and how often you open it. A sealed desktop humidor opened a few times a week will run close to the full window; a display case opened constantly will need replacement sooner. Watch the RH indicator and swap the pack when the center dot reads out of range for more than 24 hours.
Don't mix and don't cut
Two rules keep the system honest: do not put two different humidity products in the same box (they fight each other), and never cut a pack open — the fiber works through the intact overwrap. Do not mix packs of different RH in one humidor either; pick 73% for cigars and stay there.
Frequently asked questions
How many cigars does a 63 g pack cover?
About 25 cigars, or one pound of leaf / one box interior. Add packs for larger cabinets.
What size pack for a single travel cigar?
A 1.5 g pack for one cigar in a tube; 4 g for a 3–4 cigar travel case.
Can I use too large a pack?
No harm — a larger pack simply lasts longer and still holds 73% RH. Sizing up is the safe choice when unsure.
How long before I replace it?
Roughly 3 months, sooner if the box is opened often. Use the RH indicator card as the signal.
Get the right pack for your box
Match the size to your cigar count and hold 73% RH with zero wrapper residue.
Shop Humidi-Cure 73% for Cigars — from $9.99 · add an RH Indicator Card to confirm the set point.
Related reading: The Best Humidification for Cigar Humidors
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