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Delphi Development Cost Calculator

Delphi Development Costs: Transparent Estimates

Calculate the costs for Delphi development, maintenance, and modernization.

In brief

Investment frame for Delphi

The investment frame for Delphi development, maintenance and modernization is EUR 1,785 – 100,100 excl. VAT. Code size and the goal of the wave move the project inside that band.

The upfront cost can be spread over 72 months. Terms are on the software financing page.

Related: Delphi development.

Delphi Costs at a Glance

Interactive Delphi Cost Calculator

Delphi cost calculator

What does your Delphi project cost?

Calculate the cost for maintenance, enhancement or migration

Step 1 of 425%

What do you want to implement?

How the Delphi project range is built

The calculation follows six visible stages. All figures remain planning values until scope and assumptions have been reviewed.

  1. 1. Capture inputs

    The calculator records the visible project, volume, complexity and operating parameters selected on this page.

  2. 2. Add fixed components

    Fixed base modules and selected add-ons are added without mixing them with recurring charges.

  3. 3. Apply multipliers

    Quantity, complexity and scope factors multiply only the cost components identified for them in the calculator model.

  4. 4. Create the range

    The calculator applies its documented lower and upper uncertainty factors to the base result; ROI views keep investment and savings visible separately.

  5. 5. Round and calibrate

    Monetary result fields are rounded to the nearest whole euro. Public project-cost components are calibrated with the centrally maintained display factor.

  6. 6. Classify the result

    The result is shown as non-binding guidance. A binding quote requires scope, data, integrations, risks and acceptance criteria to be reviewed.

Included

  • Inputs shown in the calculator
  • Calculator-specific base values and factors
  • Displayed one-off and recurring result components

Not included

  • Requirements not selected in the calculator
  • Unknown data migration and third-party licence costs
  • Taxes, legal advice and a binding delivery commitment

Efficiency or discount factor: A central display factor of 0.7 is applied to public project-cost components to keep all calculators aligned with the currently reviewed pricing basis. It is not a customer-specific discount; customer-entered wages, revenues and existing operating costs are not reduced.

Why this is not a binding quote: The calculator cannot verify complete requirements, third-party dependencies, data quality, legal constraints or acceptance criteria.

Technical responsibility and review

Technical owner
Björn Groenewold
Role
Managing Director and software engineer
Expertise
Software development and software estimation
First published
Last technical review
Price basis
September 2026

Sample calculations & scenarios

Concrete project profiles with assumptions and indicative budgets—useful for internal alignment alongside the calculator.

Cost examples

All cost examples for this calculator

Delphi Development Pricing Overview

The investment frame is EUR 1,785 – 100,100 excl. VAT. Scope and complexity move the project inside that band.

Small Application

Inside the investment frame

  • Simple desktop app
  • Local database
  • Standard UI
  • 4–8 weeks development
Typical
Business Application

Inside the investment frame

  • Multi-user system
  • SQL Server integration
  • Reports & export
  • 8–16 weeks development
Industrial Software

Inside the investment frame

  • Complex logic
  • Hardware integration
  • Real-time processing
  • 4–12+ months development

Why Delphi Is Still Relevant Today

Delphi (Object Pascal) has a loyal user base – especially in the German SME sector. Many business-critical applications have been running stably for decades. Native Windows performance, rapid development, and direct hardware access are strengths that modern frameworks often cannot offer.

The problem: experienced Delphi developers are scarce. When the original developer leaves, many companies face a serious challenge. We have delivered Delphi work since 2010 and also take on software without documentation.

Modernization vs. Migration

Not every old Delphi application needs to be replaced. Often, modernization is the better path: updating to current Delphi versions, new UI frameworks (VCL/FMX), improved database connectivity, adding web services.

Migration to .NET, Electron, or web makes sense when: dealing with very old unstructured code, wanting cross-platform support, or when modern web technologies are needed. We provide honest advice on what is optimal for your situation.

All Delphi Versions Supported

We work with all Delphi versions:

  • Turbo Pascal, Delphi 1–7: Legacy maintenance and migration
  • Delphi 2005–XE8: Unicode migration, VCL updates
  • Delphi 10+: Modern development, FMX, REST
  • Lazarus/FreePascal: Open-source alternative

Why Delphi Expertise With Us?

Years of Experience

Over 20 years of Delphi experience – from Delphi 5 to the current version.

Modernization

We bring old Delphi systems up to date or migrate them carefully.

Reliability

Your business-critical Delphi software stays stable and future-proof.

Related Topics

Delphi ServicesLegacy Modernization CostsSoftware Rescue CostsSoftware Maintenance Costs

Frequently asked questions

Delphi Development Costs

Costs & budget

How much does new Delphi development cost?

The investment frame covers simple desktop applications, business software and industrial software alike: EUR 1,785 – 100,100 excl.

VAT. Delphi suits performant Windows applications.

What does maintenance of existing Delphi software cost?

Maintenance of existing software starts from €210/month excl.

VAT and is not the project investment frame. Experienced Delphi developers are rare – our company has delivered Delphi work since 2010.

What does migration from Delphi to modern technologies cost?

Stepwise migration and a full rebuild sit in the same investment frame.

A hybrid is often sensible: keep core systems in Delphi and build new modules with a modern stack.

Björn Groenewold – Geschäftsführer Groenewold IT Solutions

Calculate Delphi costs

Use our calculator for an initial estimate of your Delphi project.

Go to cost calculator
Alternatively:Book a consultation

Technology & versions

Which Delphi versions do you support?

All since Delphi 5: D5, D7, 2005–XE8, Delphi 10+.

Also Turbo Pascal and Lazarus/FreePascal. Migration to current versions is possible.

Should I modernise Delphi or migrate?

Well-structured Delphi code can often be modernised cost-effectively.

For very old or poorly maintainable code, migration to .NET or web may be better – we recommend after code analysis.

Is Delphi still future-proof?

Yes: Embarcadero actively develops Delphi (FireMonkey, REST integration, cross-platform).

For new projects it is still worth comparing modern alternatives.

Björn Groenewold – Geschäftsführer Groenewold IT Solutions

Request a consultation

Which solution fits your project? We advise you without obligation.

Get in touch

Takeover & support

Why are Delphi developers so hard to find?

Delphi is less widespread than C# or JavaScript; many specialists have retired.

We have delivered Delphi work since 2010 and also take over undocumented projects.

Can you take over Delphi software without documentation?

Yes.

Code analysis sits in the same investment frame. We then assess condition and maintainability. With well-structured code, takeover is usually straightforward.

Migration & future-proofing

When is migration from Delphi to .NET or web sensible?

When new developers are scarce, UI modernisation needs deep Delphi skills or cloud deployment is required.

We check whether API wrapping or redevelopment is more economical.

Can Delphi applications still be maintained?

Yes: Embarcadero maintains Delphi actively (currently version 12 Alexandria).

We support applications from D5 to D12 – components, database access and Windows APIs included.

What does porting a Delphi application to .NET cost?

The port sits in the same investment frame.

Codebase, database access, UI and proprietary components such as VCL, Indy or FastReport decide the effort. A reliable quote follows the first analysis.

More about Delphi development

How the Delphi budget is staged in waves

How costs arise for your Delphi care or modernization

Audit, strategy choice, wave by wave—so you don't get a lump sum bill for a 20-year-old codebase.

  1. 1. Code and dependency audit

    We check Delphi version, components, database, and interfaces. From that comes a grounded estimate.

  2. 2. Strategy choice

    Care, modernization in Delphi, or migration to .NET—each strategy has different cost. We honestly recommend what pays off.

  3. 3. Wave-based execution

    We suggest waves with own budgets so delivery stays intact—instead of a year without visible output.

  4. 4. Care and knowledge transfer

    We calculate care, documentation, and knowledge transfer. So no dependence on individual experts emerges.

Typical pricing models (overview)

Comparison: typical pricing models for software and IT projects
ModelWhen it fitsBudget & flexibilityTypical risks
Fixed price (fixed scope)Clearly defined scope, stable requirements, repeatable delivery.Predictable total cost; little room for change without a change order.Scope creep leads to change orders or quality trade-offs.
Time & MaterialDiscovery, legacy, evolving requirements, or close collaboration.Maximum flexibility; budget transparent via hourly or daily rates.Without prioritisation, effort can grow—backlog and reviews matter.
Retainer / maintenance packageOngoing operations, updates, small features, and support.Agreed capacity per month; predictable follow-on cost.Large changes may still need a separate estimate.
Hybrid (milestone + T&M)MVP or phased releases with clear go-lives, then iterate.Core delivery fixed price; extensions on a time-and-materials basis.Define contractually what is in scope vs. extra work.

Calculators on this page provide indicative ranges; we choose the right model with you based on risk, scope, and planning horizon.

What determines the costs, and what comes next?

The ranges shown are indicative. For a binding quote we discuss scope, priorities and funding options in a free intro call. Many digitalization projects qualify for grants – try our funding calculator.

Browse all cost calculators, explore services and typical solutions. Questions about Delphi development? Contact us.

After using the Delphi development calculator, validate assumptions in a short intro call.

What we align in the call

  • Scope, risks, and funding options
  • Milestones and documented exclusions
  • Transparent quote without hidden line items

Costs for Delphi development in context

  • Scope, risk, and quality expectations drive the range
  • Include operations, maintenance, and grants
  • Dedicated contacts and short paths from East Frisia

Browse all cost calculators in the costs overview.