ToolKnife vs Calconic

Need to embed calculators on your website? Calconic gives you a drag-and-drop builder. ToolKnife gives you pre-built tools with an API. Different approaches to the same problem.

You need an API to power calculators in your app or AI agent

ToolKnife

REST API with 480+ functions covering finance, math, health, and more. MCP server for AI agents like Claude and Cursor. Every tool is API-accessible.

Calconic

No API. Calconic is a widget platform only. No programmatic access to calculator functions.

Try Procentová kalkulačka

You want to build calculator layouts without writing code

ToolKnife

No visual builder. Embeds are pre-built tools you configure (theme, colors, defaults) via iframe embed code.

Calconic

Full drag-and-drop builder with 24 element types: sliders, formulas, radio buttons, conditional logic, payment buttons, and custom styling.

You need tools beyond calculators: PDFs, images, invoices

ToolKnife

25 categories: PDF tools (merge, split, watermark), image editors, CSS generators, developer utilities, invoice generator, QR tracking, uptime monitoring.

Calconic

Calculator widgets only. No other tool categories.

Try PDF Merger

You want white-label embeds with your branding

ToolKnife

Business plan ($99/mo) removes ToolKnife branding. 29+ tools optimized for embedding across all categories.

Calconic

Bold plan ($44/mo) includes white-label. Drag-and-drop customization of every visual element.

Quick comparison

	ToolKnife	Calconic
REST API	Yes (480+ functions)	No
MCP server	Yes	No
Drag-and-drop builder	No	Yes (24 element types)
Tool categories	25	Calculators only
White-label embeds	Business $99/mo	Bold $44/mo
Languages	18 locales	Multi-language

Pricing

ToolKnife

Free (200 API calls/day) / Pro $19/mo / Business $99/mo

Calconic

Free (limited) / Light $5/mo / Regular $14/mo / Bold $44/mo

FAQ

Can I embed ToolKnife tools on my website like Calconic?

Yes. ToolKnife provides iframe-based embeds with a configurator for theme, accent color, and responsive sizing. 29+ tools are optimized for embedding. Business plan removes branding.

Does ToolKnife have a drag-and-drop calculator builder?

No. ToolKnife embeds are pre-built tools you configure. If you need to design calculator layouts from scratch without code, Calconic is better suited for that.

Which is cheaper for basic embeds?

Calconic starts at $5/mo (Light). ToolKnife's free plan includes branded embeds with 200 API calls/day. For white-label, Calconic Bold is $44/mo; ToolKnife Business is $99/mo but includes 290+ tools and API access.