Need a Freight Shipping Cost Calculator (Weight, Volume, Distance)

We run a cargo transport company and want an interactive calculator added to our website so customers can estimate shipping costs themselves instead of waiting for a manager to reply by phone or email. The sender enters cargo weight, dimensions or volume, plus a pickup point and a destination, and the calculator works out the distance automatically and returns an approximate price with an estimated delivery timeframe.

The pricing logic needs to combine several factors: actual weight versus volumetric weight (the higher of the two is normally used), distance between the two points, and cargo type, since general freight, palletized loads and oversized cargo are usually priced differently. Base rates, the per kilometer rate and the per kilogram rate should live in an editable tariff table rather than being hardcoded, so staff can update pricing themselves.

The form should stay simple for an ordinary visitor, the result should be presented clearly, and everything needs to work well on mobile and match our current site design.

Scope of work:
— input form for cargo parameters and route
— automatic distance calculation
— price and delivery time logic
— editable tariffs through an admin panel
— responsive layout matching the site style