Carriers use different billing bases (weekly/monthly, regional differences); curves reflect each carrier's own movement, not directly comparable. The ~20-year history is reconstructed from the public USGC jet-fuel index; absolute levels are estimates, trend shape is reliable.
Period Statistics Period Statistics
Volatility is standard deviation (%) and coefficient of variation CV = σ/mean; YoY compares the previous period's average. For cost budgeting reference.
Carrier Spread Carrier Spread
DHL − UPS and other spreads turn positive/negative over time, explaining "why this carrier costs more".
Seasonality Seasonality
Monthly averages across the year, showing peak fuel months.
Cost Impact Calculator Cost Impact Calculator
Freight charge (¥)
Enter freight to see the fuel surcharge amount
Calculates the fuel surcharge from current and last-1-year rates, for quoting and cost estimation. Formula: Fuel fee = Freight × Rate%.
13-Week Forecast 13-Week Forecast
Linear extrapolation from the last 26 weeks; for trend reference only, not a price commitment.