About PaycheckKit

PaycheckKit is a collection of free calculators for the money questions that come with having a job: raises, overtime, unused vacation, salary conversions, and competing offers.

Two principles guide every tool here. First, show the math — each calculator publishes its exact formula and a worked example, so you never have to trust a black box. Second, nothing leaves your browser — calculations run locally on your device, and we don't collect, store, or transmit anything you type.

These tools provide estimates for general information, not financial, legal, or tax advice. Rules around overtime, PTO payout, and withholding vary by state and employer — confirm anything important with your HR department or a qualified professional.

Have a paycheck question that deserves its own calculator? We add new tools regularly.