About LeaseLens

LeaseLens is a small set of free calculators for people deciding between leasing and buying a car. Every tool runs entirely in your web browser: nothing you type is uploaded to a server, and we do not place tracking cookies that follow you around the web.

We built LeaseLens because lease paperwork is full of terms — money factor, residual value, capitalized cost — that are hard to compare at a glance. Our goal is to show the real monthly number and the total cost side by side, so the decision is yours to make with clear figures.

LeaseLens is not a lender, a dealer, or a financial adviser. The calculators use standard lease math and example assumptions; your actual offer comes from your dealer or bank. We review our example figures periodically to keep them reasonable, but the formulas themselves never change, so the tools stay useful year after year.

Who it is for. LeaseLens is written for everyday car shoppers — people weighing a lease offer against a loan, or checking whether an end-of-lease buyout price is fair. You do not need any finance background, because each tool explains its own inputs in plain language right next to the form.

What we do not do. We never ask you to create an account, we never upload the numbers you type, and we do not run advertising that follows you across the web. The calculators are plain math that runs on the page you are viewing, which means your inputs stay on your own device from start to finish.

Helping us improve. If an example figure looks wrong, or a tool would be clearer if presented another way, email hello@leaselens.site. We read suggestions and refresh the example assumptions when market conditions shift, while keeping the underlying formulas stable so older bookmarks keep working.