Emissions calculators are an essential tool for fleets trying to become more sustainable.  Compiled are some calculators that can determine a fleet’s emissions based on various vehicle criteria that is entered.
HEV Cost Calculator for fleets with multiple vehicle models
Compare your current car against a hybrid
Fuel economy guide for many makes and models
Compare vehicles on multiple aspects for most models for years 1985–present
Individual emissions calculator by vehicle model year
Diesel emissions quantifier
Idle reduction fuel savings calculator for school buses
Vehicle lifecycle calculator
Flex fuel vehicle cost calculator
Petroleum Reduction Planning Tool
Fleet Emissions Calculators
MOVES2014 (Motor Vehicle Emission Simulator) – EPA Office of Transportation and Air Quality’s new emission modeling system will estimate emissions for on-road and non-road mobile sources, cover a broad range of pollutants, and allow multiple scale analysis.