Japan Post International EMS uses 6000 cm³/kg for volumetric weight calculations — a more favorable divisor than the global 5000 standard. Domestic Yu-Pack services are largely weight-only.
Awaiting dimensions. Enter package details to compute billable weight.
| Service | Imperial (in/lb) | Metric (cm/kg) | Notes |
|---|---|---|---|
| EMS (International Express) | — | 6000 | All packages |
| International Parcel (Air) | — | 6000 | All packages |
| Domestic Yu-Pack | — | Weight-based | Most services weight-only |
Japan-origin international, Asia-Pacific distribution
Domestic Japan (Yamato Transport / Sagawa often faster and similar pricing)
Run an actual rate quote on Japan Post / EMS's official site to confirm pricing and check current surcharges.
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Japan Post / EMS uses a divisor of 6000 cm³/kg (metric) — this carrier publishes only metric divisors. The DIM weight formula is volume divided by this number, rounded up to the nearest whole pound or kilogram.
Japan Post / EMS applies dimensional weight to packages above No minimum. The billable weight is always the greater of the actual weight or the calculated DIM weight.
Use right-sized packaging — every cubic inch you save is divided by the divisor and removed from your billable weight. Avoid excessive void fill and consider custom box sizes for products you ship frequently. For occasional shippers, use the calculator above to test packaging changes before you commit to new materials.