Countworthy

Numbers worth counting on

Free calculators that give straight answers — every formula sourced and dated, every result computed in your browser. No signup, no uploads, your inputs are never stored.

Investing

5 tools

Compounding, averaging down, your FIRE number, and what a dividend really pays — lump-sum comparisons included.

DRIP · Stock Average · DCA · FIRE · Dividend Yield

Creator

5 tools

What your views earn at your own RPM, how your engagement rate compares with named, dated studies, and the production math for scripts, thumbnails and crops.

YouTube RPM · Engagement Rate · Thumbnail Checker · Script Timer · Aspect Ratio

Freelance

2 tools

Your take-home after platform and withdrawal fees, and project quotes that actually cover overhead and margin.

Fiverr & Upwork Fee Calculator · Freelance Quote

Fitness

2 tools

Strength and body-composition estimates from published formulas, with each method's limits stated on its page.

One-Rep Max · Body Fat

How a number earns its place here

The whole process →
  1. 01

    Sourced

    Every formula comes from a primary source — the CRA, Service Canada, a published study, a platform’s own fee page — and that source is cited on the calculator itself.

  2. 02

    Re-derived and dated

    Each result is re-derived independently before it ships, and every page carries the date it was last verified against its source, so you can see how fresh a number is.

  3. 03

    Tested

    55 test suites re-run every calculator’s arithmetic against figures worked by hand from those sources. They run before anything changes.

Recently verified

Dates from each page’s own audit trail

Put a calculator on your own site

Free embed

Seven Canadian tools as widgets you paste into any page — your colours, your province defaults, nothing collected. Free for anyone who keeps the credit line.

Countworthy for Business

White-label embeds, custom calculators and an engine licence for accountants, brokers, credit unions and advisors — prices on the page, re-verified every January.
Jump straight to a tool
How these are built: each tool states its exact formula, shows worked examples, links its sources, and carries a "last verified" date — because a calculator you can't check is just a guess with buttons. Here is the whole process, including the one failure our tests cannot catch and what we built instead. Everything runs client-side; your numbers never leave this page. No analytics, no cookies, no accounts — the only things kept on your device are the country and colour theme you pick. Privacy.