Useful tools travel further

Put a trusted calculator inside your website.

Choose a calculator, copy one iframe, and publish it on a blog, school resource page, industry guide, or internal knowledge base. No account, API key, or JavaScript package required.

01Choose

Match the calculator to the surrounding article or lesson.

02Copy

Copy the ready-made iframe without installing a package.

03Publish

Paste it into an HTML block and preview before publishing.

10 high-use tools

Ready-to-publish calculator embeds

Every widget calculates in the visitor's browser and keeps a visible Dear Calculator source link.

Percentage Calculator

Find a percentage of any number.

Iframe code

<iframe src="https://dearcalculator.com/embed/percentage-calculator/" title="Percentage Calculator by Dear Calculator" loading="lazy" style="width:100%;height:560px;border:0;border-radius:20px;overflow:hidden" referrerpolicy="strict-origin-when-cross-origin"></iframe>

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Average Calculator

Calculate the arithmetic mean of a list.

Iframe code

<iframe src="https://dearcalculator.com/embed/average-calculator/" title="Average Calculator by Dear Calculator" loading="lazy" style="width:100%;height:560px;border:0;border-radius:20px;overflow:hidden" referrerpolicy="strict-origin-when-cross-origin"></iframe>

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Loan Calculator

Estimate a fixed-rate monthly loan payment.

Iframe code

<iframe src="https://dearcalculator.com/embed/loan-calculator/" title="Loan Calculator by Dear Calculator" loading="lazy" style="width:100%;height:560px;border:0;border-radius:20px;overflow:hidden" referrerpolicy="strict-origin-when-cross-origin"></iframe>

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Mortgage Calculator

Estimate monthly principal and interest.

Iframe code

<iframe src="https://dearcalculator.com/embed/mortgage-calculator/" title="Mortgage Calculator by Dear Calculator" loading="lazy" style="width:100%;height:560px;border:0;border-radius:20px;overflow:hidden" referrerpolicy="strict-origin-when-cross-origin"></iframe>

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Compound Interest Calculator

Project savings with monthly compounding.

Iframe code

<iframe src="https://dearcalculator.com/embed/compound-interest-calculator/" title="Compound Interest Calculator by Dear Calculator" loading="lazy" style="width:100%;height:560px;border:0;border-radius:20px;overflow:hidden" referrerpolicy="strict-origin-when-cross-origin"></iframe>

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Sales Tax Calculator

Add a custom sales-tax rate to a price.

Iframe code

<iframe src="https://dearcalculator.com/embed/sales-tax-calculator/" title="Sales Tax Calculator by Dear Calculator" loading="lazy" style="width:100%;height:560px;border:0;border-radius:20px;overflow:hidden" referrerpolicy="strict-origin-when-cross-origin"></iframe>

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BMI Calculator

Calculate adult body mass index in metric units.

Iframe code

<iframe src="https://dearcalculator.com/embed/bmi-calculator/" title="BMI Calculator by Dear Calculator" loading="lazy" style="width:100%;height:560px;border:0;border-radius:20px;overflow:hidden" referrerpolicy="strict-origin-when-cross-origin"></iframe>

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Age Calculator

Find calendar age on a chosen date.

Iframe code

<iframe src="https://dearcalculator.com/embed/age-calculator/" title="Age Calculator by Dear Calculator" loading="lazy" style="width:100%;height:560px;border:0;border-radius:20px;overflow:hidden" referrerpolicy="strict-origin-when-cross-origin"></iframe>

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Date Difference Calculator

Count signed calendar days between two dates.

Iframe code

<iframe src="https://dearcalculator.com/embed/date-difference-calculator/" title="Date Difference Calculator by Dear Calculator" loading="lazy" style="width:100%;height:560px;border:0;border-radius:20px;overflow:hidden" referrerpolicy="strict-origin-when-cross-origin"></iframe>

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Tip Calculator

Split a bill with a chosen tip percentage.

Iframe code

<iframe src="https://dearcalculator.com/embed/tip-calculator/" title="Tip Calculator by Dear Calculator" loading="lazy" style="width:100%;height:560px;border:0;border-radius:20px;overflow:hidden" referrerpolicy="strict-origin-when-cross-origin"></iframe>

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Good placement matters

Use the calculator where a reader already has a question.

Blogs and publishers

Place the widget immediately after the paragraph that introduces the decision.

Schools and teachers

Pair it with a worked example, then ask learners to change one input and explain the result.

Industry websites

Link to the full page for assumptions, limitations, examples, and source context.