Driving Time Estimator
Estimate driving time between two ZIP codes based on distance and average road speeds.
Tempo Estimado de Condução
Origem
Destino
As estimativas assumem uma média de 80 km/h e ~1,3× a distância em linha reta para rotas rodoviárias. Os tempos reais variam conforme a rota e o trânsito.
Perguntas Frequentes
How does the ZIP code distance calculator work?
The calculator uses the Haversine formula to compute the great-circle distance between the geographic centers (centroids) of two US ZIP codes. It looks up the latitude and longitude for each ZIP code, then calculates the shortest path over the Earth's surface. This is the same method used in aviation and maritime navigation.
Is the distance shown straight-line or driving distance?
The primary result is the straight-line (as-the-crow-flies) distance. The tool also shows an estimated driving distance, calculated at approximately 1.3 times the straight-line distance. Actual driving distance varies depending on road networks, terrain, and route taken.
How accurate is the driving time estimate?
The driving time is a rough estimate based on the calculated driving distance at an average speed of 50 mph. This accounts for a mix of highway and local roads. Actual travel time depends on traffic conditions, road type, speed limits, and stops. For precise routing, use a dedicated navigation service.
Does this work for all US ZIP codes?
Yes. The calculator covers all approximately 41,000 active US ZIP codes, including standard delivery areas, PO Box ZIP codes, and unique ZIP codes assigned to large organizations. Each ZIP code has a geographic centroid with latitude and longitude coordinates derived from Census and GeoNames data.
Can I calculate distance between international postal codes?
This tool currently supports US ZIP codes only. International postal codes use different formats and address systems. For cross-border distances, you would need the coordinates for each postal code in its respective country's system.