Free Embeddable Calculators & Tools

Add any of these tools to your website, blog, or app with a simple iframe embed code. Each widget runs entirely in the browser, loads fast, and includes a small attribution link back to CalcHive. No sign-up or API key required.

Mortgage Calculator

Financial

Calculate mortgage payments and amortization

Embed code:

<iframe src="https://calchive.tools/embed/mortgage-calculator" width="100%" height="500" frameborder="0" title="Mortgage Calculator - CalcHive"></iframe>

Loan Calculator

Financial

Calculate loan payments and total interest

Embed code:

<iframe src="https://calchive.tools/embed/loan-calculator" width="100%" height="500" frameborder="0" title="Loan Calculator - CalcHive"></iframe>

Compound Interest Calculator

Financial

Calculate compound interest over time

Embed code:

<iframe src="https://calchive.tools/embed/compound-interest-calculator" width="100%" height="500" frameborder="0" title="Compound Interest Calculator - CalcHive"></iframe>

Tip Calculator

Financial

Calculate tips and split the bill

Embed code:

<iframe src="https://calchive.tools/embed/tip-calculator" width="100%" height="500" frameborder="0" title="Tip Calculator - CalcHive"></iframe>

Retirement Calculator

Financial

Project retirement savings and income

Embed code:

<iframe src="https://calchive.tools/embed/retirement-calculator" width="100%" height="500" frameborder="0" title="Retirement Calculator - CalcHive"></iframe>

BMI Calculator

Health & Fitness

Calculate Body Mass Index

Embed code:

<iframe src="https://calchive.tools/embed/bmi-calculator" width="100%" height="500" frameborder="0" title="BMI Calculator - CalcHive"></iframe>

Calorie & TDEE Calculator

Health & Fitness

Calculate daily calorie needs and TDEE

Embed code:

<iframe src="https://calchive.tools/embed/calorie-calculator" width="100%" height="500" frameborder="0" title="Calorie & TDEE Calculator - CalcHive"></iframe>

TDEE Calculator

Health & Fitness

Calculate TDEE and daily calorie needs

Embed code:

<iframe src="https://calchive.tools/embed/tdee-calculator" width="100%" height="500" frameborder="0" title="TDEE Calculator - CalcHive"></iframe>

Password Generator

Generators

Generate secure random passwords

Embed code:

<iframe src="https://calchive.tools/embed/password-generator" width="100%" height="500" frameborder="0" title="Password Generator - CalcHive"></iframe>

UUID Generator

Generators

Generate random UUID v4 identifiers

Embed code:

<iframe src="https://calchive.tools/embed/uuid-generator" width="100%" height="500" frameborder="0" title="UUID Generator - CalcHive"></iframe>

JSON Formatter & Beautifier

Formatters & Beautifiers

Format, beautify, and validate JSON

Embed code:

<iframe src="https://calchive.tools/embed/json-formatter" width="100%" height="500" frameborder="0" title="JSON Formatter & Beautifier - CalcHive"></iframe>

Percentage Calculator

Math & Science

Calculate percentages and changes

Embed code:

<iframe src="https://calchive.tools/embed/percentage-calculator" width="100%" height="500" frameborder="0" title="Percentage Calculator - CalcHive"></iframe>

Unit Converter

Unit Converters

Convert length, weight, temperature, volume

Embed code:

<iframe src="https://calchive.tools/embed/unit-converter" width="100%" height="500" frameborder="0" title="Unit Converter - CalcHive"></iframe>

How to Embed a Calculator on Your Website

Choose a tool from the list above.
Copy the iframe code snippet.
Paste it into your HTML, CMS, or page builder.
Adjust the width and height attributes to fit your layout.

Every embedded tool runs entirely in the visitor's browser. No data is sent to external servers, making them safe to use on any site. The only requirement is a small "Powered by CalcHive" attribution link, which helps us keep these tools free for everyone.