Delivery cost calculator + quote generator

Single-page web application for a courier and logistics service. It calculates the cost of an order taking into account fixed and variable expenses, zones, types of delivery, and monthly volume — and immediately generates a commercial proposal for the client.

What’s inside:
— Two types of orders: documents (up to 1 kg, courier or driver) and parcels (over 1 kg, driver only).
— 4 customizable types of delivery: urgent, same-day, regular, economy. Can be renamed, disabled, and new ones added.
— 5 delivery zones with coefficients based on mileage. Can be added and edited without a programmer.
— Fixed expenses (salary, rent, taxes, admin) are distributed over the actual monthly volume of orders — the cost price is accurate even with low load.
— Variable expenses: fuel per km, depreciation, payment to the performer, additional payment for weight over 1 kg.
— Customizable markup and minimum price.
— Automatic price matrix for all combinations of “zone × type of delivery”.
— Proposal generator with company data, rate table, and conditions. One button — save as PDF.
— Live recalculation with any parameter change, without reloading.

Stack: HTML, CSS, pure JavaScript without frameworks. Works locally or on any hosting, without backend and database. The client edits all parameters themselves — a programmer is not needed for this.

#web_development #calculator #logistics #courier_service #javascript #commercial_proposal #mvp