Best Cloud Migration Cost Calculators in 2026 — Independent Review

Review Methodology

What we tested and how we scored

Independent

Not vendor-owned or consulting shop

No Email Required

Results without submitting contact

One-Time Costs

Covers migration project costs, not just running costs

Hidden Costs

Documents egress, parallel running, retraining

Multi-Cloud

Covers AWS, Azure, and GCP

Methodology

Transparent about data sources

Calculator Reviews

MigrationCost.com

This site

Independent multi-cloud migration cost estimator covering one-time project costs, egress fees, parallel running, hidden costs, and ROI analysis. No email required. No lead forms.

Pros

Covers one-time migration costs (not just running costs)
Independent — no vendor affiliation
No email required
10 hidden costs documented
Covers all 3 major cloud providers

Cons

Requires knowing approximate server/workload count
Estimates based on industry averages, not your specific config

Verdict: Best overall for pre-migration budgeting

CostSignals.com

Visit

Clean B2B calculator with 6 inputs (workloads, data volume, complexity, target cloud, volatility, scenario). Outputs low/avg/high range, timeline, monthly cloud cost, 3-year TCO savings. Cites Gartner/McKinsey. No email required.

Pros

Clean, simple UI
No email required
Multi-cloud
Cites methodology

Cons

Doesn't separate one-time migration costs vs ongoing cloud spend
No hidden costs breakdown
Less granular than MigrationCost.com

Verdict: Good for quick estimates, less detailed than MigrationCost.com

AWS Pricing Calculator

Visit

Official AWS tool. Excellent for modelling on-prem vs AWS ongoing costs. Very detailed for post-migration running costs. Does not include migration project costs. Biased toward making AWS look favourable.

Pros

Most detailed AWS pricing
Always up-to-date
Free
No email required

Cons

Only models post-migration running costs
AWS-only
Biased toward AWS
Complex — requires AWS knowledge

Verdict: Best for detailed AWS running costs — not for migration project costs

Azure TCO Calculator

Visit

Microsoft's official TCO comparison tool. Best for modelling on-premise vs Azure costs. Includes Azure Hybrid Benefit calculations. Does not model migration project costs. Azure-biased.

Pros

Includes Azure Hybrid Benefit
Microsoft-stack specific
Free
No email required

Cons

Only models running costs, not migration project costs
Azure-only
Biased toward Azure

Verdict: Best for Microsoft shops evaluating Azure running costs

Google Cloud Pricing Calculator

Visit

GCP's granular compute/storage pricing calculator. Not a migration cost tool — purely a post-migration running cost estimator. Most useful for pricing BigQuery, GKE, and other GCP-specific services.

Pros

Granular GCP pricing
Includes GCP-specific services (BigQuery, GKE)
Free
No email

Cons

Not a migration cost calculator at all
GCP-only
No migration project costs

Verdict: Useful for GCP running costs only — not migration planning

ValueCoders Calculator

Visit

Consulting shop lead-generation tool. Single-page form with migration parameters. Results require submitting contact details. Not genuinely useful for independent cost estimates.

Pros

Covers project costs somewhat
Provides ballpark number

Cons

Requires contact details to see results
Lead-gen focused
Consulting shop bias
Not independent

Verdict: Lead-gen tool — submit your contact details for their sales team

Comparison Table

All calculators at a glance

Calculator	Independent	No Email	One-Time Costs	Hidden Costs	Multi-Cloud	Rating
MigrationCost.comThis site
CostSignals.com
AWS Pricing Calculator
Azure TCO Calculator
Google Cloud Pricing Calculator
ValueCoders Calculator

Which Calculator Should You Use?

If you need to...

Quick ballpark number before a meeting

→ MigrationCost.com or CostSignals.com

Independent, no email, instant output

If you need to...

Detailed AWS running costs post-migration

→ AWS Pricing Calculator

Most granular, always up-to-date

If you need to...

Microsoft shop evaluating Azure

→ Azure TCO Calculator + MigrationCost.com

Azure TCO for Hybrid Benefit calc, MigrationCost for hidden costs

If you need to...

Benchmark multiple providers

→ MigrationCost.com /compare

Side-by-side with actual scenario numbers

If you need to...

ROI and break-even analysis

→ MigrationCost.com /roi

Only independent break-even calculator we found

If you need to...

Building a board-level business case

→ MigrationCost.com + vendor native tools

Use both: MigrationCost for total project cost, AWS/Azure for running cost detail

FAQ

Calculator comparison questions

What is the best free cloud migration cost calculator?+

For a free, independent calculator that covers one-time migration costs AND ongoing cloud costs without requiring an email address: MigrationCost.com is the most comprehensive option. For ongoing cloud running costs only (not migration project costs), AWS Pricing Calculator and Azure TCO Calculator are the most detailed — but both are vendor-biased and don't cover migration project costs.

Do AWS and Azure TCO calculators show migration costs?+

No. AWS Total Cost of Ownership Calculator and Azure TCO Calculator model ongoing cloud running costs only — not the one-time migration project cost (labour, consulting, egress, parallel running, retraining). They're useful for comparing post-migration cloud costs vs on-premise running costs, but they will always understate the true total cost of migration.

Which cloud migration calculator is the most accurate?+

No calculator can be perfectly accurate without knowing your specific workload details. The most comprehensive independent calculators are MigrationCost.com and CostSignals.com. For raw compute pricing detail, the vendor-native calculators (AWS, Azure, GCP) are most up-to-date — but require combining with a separate hidden costs estimate.