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I’m migrating a site from Drupal to WordPress and need a developer who has already navigated this exact path. Another specialist will handle the bulk of the content migration; your focus is a custom calculator that must be rebuilt in WordPress so it mirrors the current Drupal version in both logic and presentation. The tool will accept user choices through 4-6 dropdown menus and, based on existing algorithms that I will share, (I don't believe they will have to be created, but will need to verify this )return clear text-based and image results on the same page. No other input types are required. I will supply the live Drupal link, the formulas, and design references once I’ve seen examples of your previous Drupal-to-WordPress work. Because this calculator influences key business decisions, we’ll first draft a concise scope of work together, then move into development, testing, and final integration with the migrated WordPress theme. Clean, well-documented PHP/JavaScript and an admin-friendly settings panel are important to me so the marketing team can tweak values later without touching code. If you have shipped similar calculators or plugins during a Drupal migration, tell me what made them successful and how you handled data mapping and edge-case testing. Personalised responses only—generic AI-generated blurbs will be set aside.
Project ID: 40402863
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345 freelancers are bidding on average $984 USD for this job

Hello, I have handled Drupal to WordPress transitions and layout using a CMS friendly approach. I will ensure accurate results, smooth integration, and an admin setup so your team can manage values easily. I need to share a few samples from my portfolio with you. Are you available for a quick chat?
$950 USD in 7 days
9.8
9.8

Hi there, I’ve walked this exact road: migrating Drupal calculators to WordPress, preserving both logic and the look-and-feel you require. I’ll rebuild your 4-6 dropdown-driven calculator in WordPress with clean PHP/JavaScript, matching the Drupal rules exactly, and present results as text and images on one page. You’ll get a tidy, admin-friendly settings panel so your marketing team can tweak values without touching code, plus thorough inline docs for future maintenance. I’ll map data properly, test edge cases, and ensure the calculator behaves consistently across the migrated theme. Scope will start with a concise plan, followed by development, testing, and smooth integration. I’ll share real examples of prior Drupal-to-WordPress work and how I kept data mapping robust and debugging painless. What is your preferred timeline for the staged scope (draft, development, testing, final integration) and any non-negotiable edge cases you’ve seen in the current Drupal logic? Thanks for the opportunity, let’s make the calculator feel native to WordPress while staying faithful to the Drupal logic and presentation. Best regards,
$2,000 USD in 16 days
9.3
9.3

With over a decade of experience in high-scale systems and full-stack architecture, I understand the critical importance of migrating your Drupal site to WordPress seamlessly while ensuring the custom calculator retains its logic and presentation. Having successfully built and scaled tools for over 1 million users, I am well-equipped to tackle the challenges of this project. A strategic approach to ensure scalability and security is to implement clean, well-documented PHP/JavaScript code while offering an intuitive admin settings panel for easy tweaking by your marketing team. In a similar vein, I have previously handled data mapping and edge-case testing during Drupal migrations, ensuring a smooth transition without compromising functionality. I invite you to reach out so we can discuss how to best approach your project's unique requirements and create a roadmap for successful delivery within your budget and timeline. Let's work together to bring your vision to life.
$1,600 USD in 30 days
9.1
9.1

Hello, is it possible to show me current version of calculator? I can do both migration and calculator, I am good with wordpress. Thank you.
$500 USD in 7 days
9.0
9.0

As a seasoned web and app developer with over 18 years of experience, I understand the complexity and importance of your Drupal to WordPress migration. I've gone through similar projects before seamlessly moving data and functionalities between CMS platforms while maintaining optimal performance. I'm confident in handling the migration process while paying meticulous attention to even minute details like your complex custom calculator. 10+years working extensively within PHP, HTML, Drupal, and WordPress, allow me to assure you of my capacity to build a pristine custom calculator for your business needs. I have pror guided the middle store building so i have gained on the hands experience that has sharpened my skills and honed my proficiency in crafting clean, well-documented code. Ensuring the functionality is at its best, while giving the marketing team simplicity in tweaking values through an admin-friendly dashboard as you want it to be. I am thrilled not only for the opportunity to deliver a precise logic mirrored tool but also aid in developing a comprehensive scope. My team at CnELIndia will put all our expertise into making this calculator exquisitely user-friendly, relying on my reactive approach that I have honed over decades in this industry. Having worked on similar projects before, I promise no AI-generated templates but tailored involvement, from data mapping to intense edge-case testing. Let’s build something incredible together!
$1,005 USD in 15 days
9.1
9.1

Hi there! Did go through your job description and glad to share that I have experience in working with PHP, Wordpress, Woocommerce, HTML, CSS, JS development platform. I have more than ten years of industry experience and have been the part of diverse industry verticals. I also have expertise with ReactJs,VueJs, Laravel, Magento, WordPress, PHP, API's development & Integration and CodeIgnitor along with XD and Figma. So can help you with the design as well. Looking forward to your response.
$500 USD in 7 days
8.7
8.7

Hello there, I am excited about the opportunity to assist you with migrating your site from Drupal to WordPress and rebuilding a custom calculator that mirrors the current Drupal version in logic and presentation. With expertise in navigating this exact path, I am confident in my ability to deliver a seamless transition and a user-friendly calculator that meets your specifications. I look forward to discussing the project scope further and showcasing examples of my previous Drupal-to-WordPress work to ensure a successful collaboration. Regards, Yogesh Kumar
$470 USD in 6 days
8.5
8.5

Hello, I have over 7 years of experience building full-stack applications, including Drupal-to-WordPress migrations. I specialize in custom calculators and can ensure a seamless transition with clean, well-documented PHP/JavaScript code. I have successfully handled data mapping and edge-case testing in similar projects. Let's collaborate on drafting a precise scope of work before proceeding with development, testing, and integration. Check out my portfolio for examples of my previous work. Looking forward to discussing further.
$1,000 USD in 14 days
8.5
8.5

Hi, This is Elias from Miami. I checked your project description and understand you’re looking to migrate a site from Drupal to WordPress and need a custom calculator built as part of this transition. This sounds like an exciting project! I’ve successfully navigated similar migrations, ensuring that all functionalities are preserved while enhancing performance. My approach would involve analyzing your current Drupal setup, designing the calculator to meet your needs, and ensuring seamless integration into WordPress. I have a few questions to get a better understanding: Q1 – What specific functionalities should the custom calculator have? Q2 – Are there any existing user roles or permissions we need to consider during the migration? Q3 – Do you have a preferred method for user authentication on the new WordPress site? I’d be happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.
$1,500 USD in 8 days
8.2
8.2

Hello, I will build your custom calculator as a WordPress plugin — dropdown menus, algorithm logic, and text/image output rendering — with an admin settings panel so your marketing team can update formulas and dropdown values without editing code. For the admin panel, I will store each algorithm's variables as serialized option fields with a simple UI layer, so tweaking a coefficient or adding a dropdown choice is just a form save. This also makes edge-case testing straightforward — I will build a preview mode in the admin that lets you run inputs against the live algorithm before publishing changes. Questions: 1) Are the current Drupal algorithms stored in custom module code, database tables, or a mix of both? 2) Should the calculator output be embeddable via shortcode, a dedicated page template, or both? Looking forward to your response. Best regards, Kamran
$1,550 USD in 25 days
8.5
8.5

Hi, I’ve successfully built custom calculators during Drupal to WordPress migrations, ensuring they closely match the original functionality and presentation. I can help you recreate this tool with 4-6 dropdown menus, returning text and image results seamlessly. My approach involves drafting a clear scope of work first, which aligns with your focus on thorough documentation and an admin-friendly settings panel for easy adjustments later. For similar projects, I focused on clean PHP and JavaScript code while ensuring edge cases were tested rigorously. My experience in these transitions guarantees a smooth integration into your WordPress theme. If you’re ready to discuss further, I’d love to jump on a call. Best Regards, Priyanka
$1,200 USD in 7 days
8.5
8.5

Hi there, I’ve read your Drupal-to-WordPress calculator migration brief and I’m confident I can mirror your current logic and presentation with a clean, admin-friendly WordPress solution. I’ve led several Drupal-to-WordPress migrations where we rebuilt business-critical tools as robust WP plugins or blocks, preserving exact calc flows while delivering a polished front-end that matches your Drupal visuals. My approach focuses on a precise, well-documented PHP/JavaScript implementation, an admin panel for value tweaks, and a clear data-mapping plan so you can safely repoint to the new WordPress theme. What you’ll get: - 4-6 dropdown-driven calculator with identical logic, outputting text and image results on the same page. - Clean PHP/JS with a lightweight, maintainable codebase and inline documentation. - An admin settings panel for value updates without touching code. - A concise scope-of-work draft, followed by development, testing, and final in
$1,115 USD in 10 days
8.3
8.3

Hello, Rebuilding a calculator during a Drupal to WordPress migration is not just about copying UI, it is about preserving logic, accuracy, and flexibility. With 9+ years in WordPress and custom plugin development, I have rebuilt similar tools where business logic had to match exactly. I will recreate your calculator as a clean WordPress plugin (PHP and JS), mapping dropdown inputs to your existing formulas and returning results instantly on-page. I will also add an admin settings panel so your team can update values without code. I’d suggest validating formulas early and testing edge cases side-by-side with Drupal to ensure 100% accuracy. The Bid amount is subject to change and will be finalized after a complete project discussion. Let’s connect and scope this properly. Regards, Smile Mittal
$950 USD in 7 days
8.1
8.1

As an experienced developer and leader at Einnovention, my name is Asif, and I offer not just an individual perspective but the talented skills of my entire team to tackle your project. With over 248 successful projects and a consistent 4.9/5 rating, we've proven our commitment to delivering high-quality work on time and within budget. We're renowned for our transparency, client satisfaction focus, and long-term partnership mindset - values that I believe align strongly with your project's needs. In terms of core competencies, our team has extensive experience in navigating exactly the kind of Drupal-to-WordPress transition you're seeking. We're more than familiar with the complexities such as data mapping and edge-case testing that emerge during such migrations and have successfully completed numerous similar projects before. Additionally, our proficiency in clean PHP/JavaScript coding and knack for creating admin-friendly settings panels ensure your marketing team will be empowered to tweak values without touching code.
$1,005 USD in 7 days
7.9
7.9

I've rebuilt Drupal calculators in WordPress before, and the most dangerous part of the process isn't the code — it's formula translation. Drupal's custom modules often contain embedded logic that isn't obvious from the UI. Before I write a line of code, I'd want to review the Drupal module's PHP or JavaScript formula handler alongside the live tool to ensure the reconstruction is exact, not approximate. Here's specifically how I'd approach your project: Phase 1: Analysis You share the Drupal site link + the formulas. I document each input combination and its expected output, then map the algorithm precisely — flagging any edge cases or special-case logic I see in the current tool. Phase 2: WordPress Plugin Build - Custom shortcode-based WordPress plugin (not a third-party plugin — clean custom code) - 4-6 dependent dropdown menus, optionally cascading if interdependencies exist - Formula engine in PHP (server-side for maintainability and security) with AJAX for on-page result rendering - Image-based results alongside text outputs, matching your Drupal version's visual presentation - Admin-facing settings panel: non-technical team can update formula values and dropdown options without code Phase 3: QA Full edge-case test against the live Drupal tool — no result should differ. Delivery: plugin ZIP + installation guide. No dependencies on premium plugins. I'm open to a scoping call first.
$1,005 USD in 7 days
8.2
8.2

Hi, migrating Drupal to WordPress with a like-for-like calculator rebuild is clear, I’ll recreate its logic as a custom WP plugin with PHP/JS, ensuring identical outputs, UI parity, and an editable admin panel. I’ve handled similar migrations preserving calculation integrity and edge cases. Can you share the current calculator link? Should results be cached or always computed live? Let’s discuss in chat to proceed further.
$350 USD in 7 days
7.8
7.8

Hi, I can start this immediately. WordPress custom calculators with admin panels are what I do daily. I'll rebuild the dropdown logic in a lightweight plugin using JavaScript for instant updates and PHP for validation, wire your algorithms into the calculation engine, and build an admin settings page so your team can adjust values without touching code. Every path gets tested against the live Drupal version to catch edge cases. Staging first—production only after you sign off. I'll need the live Drupal link, the formulas, design references, and WordPress admin access to kick off. Available on Freelancer messenger throughout. Best Regards, Suleman
$299 USD in 7 days
7.7
7.7

Hello, I'm Wordpress expert, I have 10+ years experience in HTML, CSS, jQuery, PHP, Laravel, API, Wordpress, Joomla,.... I customized, created many themes, plugins. I will provide you with the best quality and long term support. Please discuss, thank you!
$405 USD in 3 days
7.5
7.5

Hi, I’ve handled Drupal → WordPress migrations where custom tools were the most critical part—not just content. In a recent project, I rebuilt a decision-based calculator from Drupal into a custom WordPress plugin, preserving logic, UI behavior, and output accuracy exactly as the original. My approach: Audit existing Drupal logic (often PHP + JS mix) and validate formulas before porting Rebuild as a modular WP plugin (clean PHP + JS) with shortcode/block support Create an admin panel for editable values (no dev dependency for your team) Match UI/UX pixel-wise using your design references Test edge cases with predefined scenarios + real data to ensure decision accuracy Biggest success factor: separating logic from presentation early, which made testing and future updates much easier. Happy to review your current calculator and draft a precise scope before development. Let’s discuss. Thanks....
$1,005 USD in 7 days
8.0
8.0

Hi there, I’ll be direct—trying to “port” a Drupal calculator into WordPress usually creates more friction than value. We’ve attempted that route before, and in every case, we ended up rebuilding from scratch to ensure performance, maintainability, and clean integration with WP. For your case, I’d recommend a structured rebuild as a custom WordPress plugin: Reverse-engineer the Drupal calculator (logic, conditions, edge cases) and validate your existing formulas. Rebuild the logic in modular PHP (backend) + lightweight JS (frontend for instant results without reload). Create a shortcode/block so it drops cleanly into any page. Add an admin panel (ACF or native settings) so your team can adjust values, thresholds, and images without code. Replicate UI precisely using your design references—no compromise on presentation. What made our past migrations successful: We avoided 1:1 code migration and focused on logic parity Built test cases from real user scenarios before coding Handled edge cases early (null selections, conflicting inputs, fallback outputs) Separated calculation logic from UI for easier future updates This approach gives you a cleaner, faster, and future-proof tool rather than a patched migration. Happy to review your Drupal link and confirm complexity before locking the scope. Best,
$1,005 USD in 7 days
7.5
7.5

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