Abstract: A web-based method for customer lead generation employing a system of need-based calculators which when chosen by a consumer identify a product or service need without the consumer having to actively do so. The user-specific calculators provide the consumer with calculations to be considered for a specific product or service being considered for purchase. Data entry windows in the calculator provide the consumer input positions for data needed for the calculations and concurrently capture data for a potential vendor to employ in making a bid. The consumer thereby identifies a need for a product or service and provides data for use in providing that service that may be forwarded to vendors.