Instant Quote Tool
Let customers configure a service and receive an indicative price.
Custom calculators for businesses
Turn your website into a tool your customers actually use.
Custom calculators, quote estimators and ROI tools built around your business — designed, coded and ready to add to your website.
Build your estimate
100+ calculators built on CalcNest — our own tool library
Responsive by default
No payment before quote approval
Interactive project estimator
Shape the project. See an indicative range.
Configure the tool you have in mind. Your estimate updates instantly and gives us a useful starting point for an exact, manually reviewed quote.
What could you build?
Give visitors a reason to act.
The best calculator is not just a feature. It helps a customer understand value, make a decision or take the next step.
ROI Calculator
Show prospects what your product or service could save or earn them.
Finance Calculator
Repayments, affordability, rates, investments or comparisons.
Savings / Comparison Tool
Help visitors compare options using their own circumstances.
Lead Qualification Calculator
Give visitors a useful result and capture enquiries afterwards.
Something Completely Custom
If the logic can be defined, CalcNest can scope it.
Real CalcNest examples
Built to make complex ideas feel simple.
These are CalcNest's own tools, not client projects. They demonstrate the type of functionality and interface we can build.
↗Simple
MPH to KM/H Calculator
Fast deterministic conversion with a focused interface.
↗AdvancedMortgage Calculator
Detailed repayment logic and useful financial outputs.
↗Multi-modeFuel Cost Calculator
Flexible trip, efficiency and price calculations.
↗Full experienceSalary After Tax Calculator
Country modes, richer logic and supporting content.
Pricing
A clear starting point, then a fixed quote.
Your final price is confirmed after we review the calculation, features and delivery requirements.
For straightforward calculators and estimators.
For richer calculations, conditional logic and detailed results.
A complete calculator landing page with supporting UX and content.
Not sure which you need? Use the estimator above.
What every build includes
The essentials are not optional extras.
Responsive desktop/mobile design
Styling matched to your brand
Calculation logic
Input validation and error handling
Browser testing
Ready-to-use implementation/code
One revision round
Basic implementation guidance
Process
From idea to working calculator.
Tell us what you're building
Use the estimator and send your project details.
We scope it
We review the calculation and confirm functionality, turnaround and a fixed quote.
You approve
No development starts until you're happy with the scope and price. Secure Stripe payment follows quote approval.
We build & test
Your calculator is developed and tested across desktop and mobile.
Delivery
The finished calculator and implementation instructions are supplied.
FAQ
Questions before you enquire.
Straightforward builds start from $149 USD, advanced projects from $299 and complete calculator landing pages from $599. We confirm a fixed quote after reviewing your requirements.
Many projects take around 5–8 working days after scope and payment are confirmed. Complex integrations may take longer, and urgent work depends on availability.
Yes. Brand-matched colours, typography and responsive styling are included by default.
Yes. We can prepare calculators for WordPress, Shopify, Webflow, Wix, Squarespace or custom HTML sites. The exact implementation method depends on your setup and access.
Send the business rules, examples and outcome you need. We can help translate clearly defined requirements into calculator logic, then ask you to approve the scope.
Yes. Lead capture can be added after the result and connected to an appropriate email, form or CRM workflow where technically practical.
Yes, where the provider offers suitable access. Final cost and ongoing fees depend on the API provider, data limits and integration complexity.
Yes, if AI adds genuine value. Third-party model or API usage fees may apply after delivery, and no unlimited free usage is promised.
A standalone calculator may have no CalcNest subscription. External services such as AI, APIs, hosting or third-party platforms can introduce their own ongoing charges.
One revision round is included. Later changes or new functionality can be scoped and quoted separately before any work begins.
Exact quote
Tell us where to take it next.
Your estimator choices are included automatically. Add your details and anything else we should know; we'll review the scope before confirming a fixed price.
- Calculator
- Simple calculator
- Complexity
- Straightforward
- Platform
- WordPress
- Features
- None selected
- Estimate
- $149–$199 USD
- Deadline
- No rush