There are many websites that have car value calculators on the internet. Enter your vehicle's information and that should help you find an accurate trade-in price for it.
http://banking.about.com/library/calculators/bl_CarPaymentCalculator.htm is an excellent website that gives you all the information you will need regarding car amortization calculators
There are many websites that offer car loan calculators To find one near you check the world wide web for more information on finding websites offer car loan calculators
In selling and buying a car you would use a car value calculator for the best to buy or list it at. Car value calculators are all over the internet just type in the key words 'Car Value Calculator'.
Among other financial calculators, Bank Rate has a car finance calculator which many people find very helpful: http://www.bankrate.com/calculators/auto/car-finance-payment-calculator.aspx
There are many online calculators for car loans such as www.bankrate.com/calculators/auto/auto-loan-calculator.aspx, www.bankrate.com/auto.aspx, and www.onlineloancalculator.org/.
There are a number of car tax calculators available online. Some sites that have calculators include VCA, nidirect, Parkers, Cars Direct and What Car.
Car value calculators quality can vary on the type of vehicle you are looking to value. Parkers often provide good valuations for all vehicles. However, Wisebuyers provides the best valuations for vehicles if you are aware of the current mileage.
You can go to www.edmunds.com to find a good car price calculator.
A car value calculator functions to calculate the current resale value of a car. They will also calculate the current value of a van, light truck or SUV. So perhaps they should be called vehicle value calculators instead.
Assuming you mean car depriciation, you can find a calculator here: http://www.money-zine.com/Calculators/Auto-Loan-Calculators/Car-Depreciation-Calculator/
There are a number of websites online that offer car loan calculators. Some websites that you may be interested in include Nationwide, Capital One and Rate City.