Free Calculators for Your Site: Embed Program

Every calculator on Kultranz is also available as a bare, framable widget you can drop into your own site with copy-paste. Free means free: no account, no key, no billing screen. The one condition is a link. Here is the whole program.

The calculators you can embed

Each has a live preview (the bare, framable version) and a tool page where the copy-paste box lives. All of them run on the same government-sourced data as the site: BLS OEWS wages, BEA Regional Price Parities, IRS 2026 rules.

CalculatorWhat it doesTool page with snippetLive preview
Paycheck Calculator2026 take-home pay for any US state, single or MFJ, with 401(k) pretax/tools/paycheck-calculator/preview
Cost of Living CalculatorEquivalent salary between two of 50 US metros from BEA price data/tools/cost-of-living/preview
Salary PercentileYour BLS wage percentile for a job and city (am I underpaid?)/tools/salary-percentile/preview
Cost of Living Raise CalculatorThe raise you need to keep buying power in a new city, take-home at both ends/tools/col-raise-calculator/preview
Compound Interest CalculatorGrowth with regular contributions over time/tools/compound-interest-calculator/preview
Debt Payoff CalculatorAvalanche vs snowball payoff schedules, month by month/tools/debt-payoff-calculator/preview
Net Worth CalculatorAssets minus debts, with category breakdown/tools/net-worth-calculator/preview
Budget CalculatorCustom-category monthly budget and the 50/30/20 check/tools/budget-calculator/preview
Offer Comparison CalculatorTwo job offers side by side: 2026 take-home, 401(k) match, BLS percentile, real buying power/tools/offer-comparator/preview

The Salary Negotiation Brief is a paid product and is not part of the embed program.

The copy-paste pattern

Every tool page has an “Add this calculator to your site, free” box with the exact snippet for that calculator and a copy button. The pattern is always the same two elements:

<iframe src="https://kultranz.com/embed/PAYCHECK-CALCULATOR/"
        width="100%" height="640" loading="lazy"
        style="border:1px solid #e5e5e5;border-radius:8px;max-width:720px;width:100%"
        title="Paycheck Calculator by Kultranz"></iframe>
<p style="font:500 12px/1.5 system-ui,-apple-system,sans-serif;margin:8px 0 0;text-align:center">
  Powered by <a href="https://kultranz.com/tools/paycheck-calculator/?utm_source=embed&amp;utm_medium=widget"
     rel="dofollow" style="color:#0b5cff;font-weight:600;text-decoration:none">Paycheck Calculator</a>
</p>

(That is the paycheck calculator’s snippet; each tool’s box carries its own URLs.) Paste both elements together. The iframe is the calculator; the <p> is the deal.

The attribution requirement, stated plainly

The calculator is free because of the link, not despite it.

  • The “Powered by [Tool Name]” line must appear directly under the calculator, plainly visible to your visitors, as it ships in the snippet.
  • The link must be a normal dofollow link (rel="dofollow" or no rel attribute at all) pointing at the tool’s kultranz.com page. Nofollow, sponsored, hidden with CSS, same-colored-on-same-background or moved-to-the-footer variants are all removals.
  • You may not iframe the bare /embed/ URL while cropping out or covering the attribution.

That is the entire contract. You give us one honest link, we give you a maintained calculator with government-sourced data, and neither of us pretends the exchange is something else. This being an FTC-honest page: we built this program because the backlink is worth real money to us in search, and we say so.

Setup in three lines

  1. Open a tool page above and scroll to “Add this calculator to your site, free”.
  2. Click Copy embed code, then paste the snippet into your page where the calculator should appear.
  3. Publish. Keep the Powered by line under the calculator and you are done.

Developers: the numbers behind these calculators are also available as a free JSON API (API docs), including the State Tax Diff feed if what you are really building is your own payroll math.

White-label: the calculators without our name

If the attribution link does not fit your product, you can license the same calculators unbranded: your domain feel, no Powered by line, our data and maintenance underneath. White-label embeds run $15/mo per site (launch pricing), covering every calculator you use on that site regardless of traffic. The price will move as the program matures: email [email protected] with the subject “White-label embed” and one line about your site.

Frequently Asked Questions

Yes. The calculators are free for you to embed for as long as you keep the Powered by Kultranz attribution link directly under the calculator, plainly visible, as a normal dofollow link. That link is the payment. If you want the same calculators without our branding, that is the white-label tier, which is $15/mo per site (launch pricing).

Then it is not the free program anymore, it is unlicensed use of our bandwidth and data. We ask you to either restore the link or move to the white-label tier. We are not going to pretend otherwise: the attribution is the deal, and hiding it with CSS or a nofollow rel is the same as removing it.

No. The /embed/ versions render the calculator and the attribution line and nothing else: no navigation, no footer, no ad slots, no analytics and no consent banner, so no cookies are set inside the iframe. They load one stylesheet and the tool's own inline JavaScript from kultranz.com. The calculators run on the same government-sourced data as the site itself.

Inside your page, yes: the iframe is yours to size and frame. Inside the iframe the calculator keeps our styling, because the data and the maintenance are ours. Full visual integration is what the white-label tier is for.