Calculator Builder – Create an Online Calculator

75 Quality Score

Active Installs

14/30

The popularity score is boosted well above its install base because the 1,000 active installs clears the minimum threshold, but real-world adoption is modest compared to category leaders.

Update Freshness

25/25

Maintenance is perfect, with the plugin updated within days of this assessment and a future-dated release confirming active development.

User Rating

14/15

Ratings are excellent, with 94 out of 100 from 18 reviews, though the small sample size means a few negative reviews could swing the number noticeably.

Support Health

8/15

Support health is middling because there are zero public support threads, so there is no track record to confirm how the author handles real user issues.

WP Compatibility

15/15

Compatibility is full marks, supporting WordPress 5.0 through 7.0 and PHP 7.4, which covers the vast majority of live WordPress sites today.

Scores higher than 39% of indexed plugins

About

A powerful and user-friendly tool for building custom online calculators.

Active Installs 1k+

Rating ★★★★½ 4.7/5

Last Updated 2026-08-25 6:01am GMT

Requires WordPress 5.0+

Tested Up To 7.1

Requires PHP 7.4+

Security History

2 known vulnerabilities, all patched

1 High 1 Medium

Most recent: February 14, 2025

View details ▸

What It Does

Calculator Builder lets WordPress site owners create custom online calculators through a drag and drop interface, then embed them on any page or post via shortcode. It supports a wide range of use cases, from mortgage and loan estimators to fitness trackers and e-commerce shipping calculators, using configurable form fields and formulas. The plugin focuses on simplicity so non-developers can build functional calculators without touching code.

Who It's For

This plugin fits small to mid-sized businesses that need a niche calculator, such as a freelancer quoting tool, a construction estimator, or an insurance quote form, and want to ship it on WordPress without hiring a developer. It also suits niche sites like financial advisors or course creators who need a single-purpose pricing or planning tool embedded on a landing page. If you need one or two calculators tied directly to your service offering, this is a reasonable fit.

Who Should Skip It

If you need a high-traffic, multi-calculator setup with deep CRM, payment gateway, or advanced conditional logic, you will outgrow this plugin quickly. Sites that already rely on Contact Form 7 or need a calculator tightly integrated with form submissions will get more mileage from one of the alternatives listed below.

The Bottom Line

Calculator Builder is a clean, well-maintained niche plugin that earns strong marks for upkeep and user satisfaction, with an overall quality score of 75.03 out of 100. The limited install count and absence of any public support tickets make it harder to recommend for mission-critical or high-traffic deployments. For a small business that needs one or two straightforward calculators and values a tidy, recently updated codebase, it is a reasonable pick over heavier alternatives.

Related Plugins

Cost Calculator Builder 81/100

Pick this instead if you have any real volume of traffic or users, since it has 30,000 active installs and a stronger feature set for production-grade calculators.

Cost Calculator for Contact Form 7 – Price Calculator Free 76/100

Choose this if your site already runs Contact Form 7 and you need the calculator submission to flow into the same form workflow and email pipeline.