=urcalculator.com

About urcalculator.com

We build calculators we'd want to use ourselves: accurate, fast, and honest about their limits.

Why we exist

Most online calculators are an afterthought wrapped in advertising — the answer hidden three scrolls down, the method never explained, the rates years out of date. urcalculator.com is the opposite. We treat each calculator as a small, well-made instrument. The result appears first. The math is shown. And because money and health are serious topics, every relevant page carries a "last reviewed" date so you know how current it is.

How we research our rates

Our finance tools use figures published by primary sources: the IRS and Revenue Procedure 2025-32 for US federal tax, and the Canada Revenue Agency 2026 indexation tables for Canadian federal and provincial tax, CPP, and EI. Health formulas use peer-reviewed equations — for example, the Mifflin-St Jeor equation for metabolic rate, which research has shown to be among the most accurate for the general population.

Our accuracy commitment. When tax laws or official rates change, we update the underlying data and refresh the review date. If you ever spot a figure that looks wrong, tell us — we read every report and correct quickly.

What we are — and aren't

We are a free reference tool. We are not an accountant, a tax preparer, a financial advisor, or a doctor. Our results are estimates to help you plan and understand. For decisions that matter, please confirm with a qualified professional who knows your full situation. See our disclaimer for the details.

How we keep the lights on

We keep the site free through a small number of clearly-labelled advertisements and occasional affiliate links to products we think are genuinely useful. We cap display advertising deliberately so it never gets between you and your answer. Advertising never influences the numbers a calculator produces.