🧰 Free tools for buying from Japan
Stop re-googling tariff rates every time you shop. These tools run entirely in your browser — no sign-up, and your inputs never leave your device.
US Landed Cost Calculator
Estimate the total cost of importing from Japan to the US: the 15% tariff (non-stacking), MFN rates by category, carrier disbursement fees, and the merchandise processing fee — all in one breakdown.
Try it free →Japan Proxy Fee Calculator
Compare ZenMarket, Buyee, Neokyo, FROM JAPAN, and Remambo fees for your exact order — service fees by marketplace plus payment fees, sorted cheapest first.
Try it free →Volumetric Weight Calculator
Couriers bill the greater of actual and volumetric weight (L×W×H÷5000). Find the chargeable weight of your parcel and see when a bulky-but-light box costs more than the scale says.
Try it free →Japanese Size Converter
Convert Japanese clothing & shoe sizes to US/EU/UK.
Try it free →How these tools work
Each tool page documents its formulas, data sources, and a "Rates last verified" date. If you want the background first, start with our guide to US customs fees on packages from Japan.