Price Calculator for TYPO3

Online price calculators generate qualified leads, but only if the calculation is right

Visitors who calculate a price on a website are the most valuable leads in B2B sales. They have a concrete project, know their requirements and expect a reliable figure. Yet most TYPO3 websites work with static price tables or a “Price on request” button that sends the visitor to a generic contact form. pricecal closes this gap. The extension enables configurators, cost calculators and quote generators directly in TYPO3, with specific calculation logic and an interactive frontend that responds in real time.

The difference from external tools such as Calconic or Outgrow: the data stays on your own server, the calculation is fully under your control, and the design blends seamlessly into the existing website.

Typical use cases range from the moving cost calculator to the industrial configurator

The most accessible scenario is a cost calculator for services. A moving company asks for apartment size, floor, distance and special items (piano, aquarium) and shows a guide price. The visitor sees immediately whether the service fits the budget and can request a binding quote right away. In practice, such calculators raise the inquiry rate by 40 to 70 percent compared with a static contact form, because the visitor already has a price expectation.

A second scenario is product configurators in manufacturing. A window manufacturer offers 12 frame types, 8 glass types, 4 hardware variants and 20 colors. pricecal calculates the price from the combination and displays it live while the visitor configures. With 12 x 8 x 4 x 20 = 7,680 possible combinations, a static price list is impossible. The configurator replaces it with a dynamic calculation that editors maintain through price matrices in the backend.

The third scenario is ROI calculators for software products. A SaaS provider lets visitors enter their headcount, the time currently spent and their hourly rate. The calculator shows the annual savings the product delivers. This is not a sales trick but a tool that helps the visitor justify the investment internally.

The technical architecture separates calculation logic, input fields and result display

pricecal is implemented as a custom content element in TYPO3. In the backend, the administrator defines the input fields (slider, dropdown, number input, checkbox), the calculation formula and the result display. The formula can express simple arithmetic (price = quantity x unit price x factor) or more complex logic with conditions (if floor > 3, add a 15% surcharge).

The frontend renders the input fields via Fluid templates and calculates the price in the browser with JavaScript. There is no server round trip for each slider step, and the result updates in real time. For more complex calculations, for example when price matrices or external data sources (ERP, stock availability) have to be included, the calculation can be delegated to the server via an AJAX endpoint.

Results can optionally be generated as a PDF and sent by email. In combination with powermail, the calculation result can be passed into a contact form as a hidden field, so the sales team sees the prospect’s exact configuration.

Common problems involve rounding errors and maintaining complex pricing logic

The most common problem with price calculators is correct rounding. JavaScript floating-point arithmetic returns 0.30000000000000004 for 0.1 + 0.2. With prices that have two decimal places, this leads to visible errors. The fix: perform all calculations internally in cents (integers) and convert to euros only for display.

The second problem is maintaining the calculation logic. If a product manager adjusts prices every quarter, they need to understand the formulas in the backend. For simple calculations (quantity x price), that is trivial. For configurators with 50 parameters and tiered discounts, maintenance becomes a risk. We recommend moving complex pricing logic into TypoScript configuration or a YAML file and keeping it versioned in Git rather than editing it in the backend.

The third topic is mobile usability. Sliders are imprecise on touchscreens, because a finger covers a larger area than a mouse pointer. For price calculators with fine granularity (for example square meters from 10 to 500), sliders should be replaced by input fields with plus and minus buttons.

pricecal is custom development and therefore version-independent

Since pricecal is not a community extension from the TER but a custom development, there is no external release cycle. TYPO3 compatibility depends on how the extension is implemented internally. Installations based on Extbase and Fluid run on TYPO3 v12 and v13 once the namespace declarations and the content element registration have been adapted. For new price calculator projects, Gosign relies on a framework-independent architecture: the calculation logic runs as a standalone JavaScript module that TYPO3 merely embeds as a content element, with no Extbase dependency.