The whole index is designed to be recomputable. Here are the exact formulas, factor tables, and evidence labels used before a row reaches a board.
Formulas and factor weights are universal — shown here in their canonical notation.
The Countly Passport Score
What it takes to cross the border
| Entry class | a | Rationale |
|---|---|---|
| visa-free (incl. FoM) | 1.00 | walk in |
| eTA | 0.92 | minutes online, multi-entry |
| visa on arrival | 0.80 | payable at the border |
| eVisa | 0.55 | real application, refusals happen |
| visa required / no admission | 0.00 | embassy process |
The Countly angle — how long the door stays open
| Allowed stay | s |
|---|---|
| ≥ 90 days | 1.00 |
| 60–89 | 0.85 |
| 30–59 | 0.70 |
| 15–29 | 0.60 |
| ≤ 14 | 0.50 |
| unstated | 0.90 |
What a door is worth
A door to Japan is not a door to a microstate. Every destination is weighted by a public formula and floored so each country still counts.
+ 0.3·norm(log arrivals)
w ∈ [0.4, 1.0]
Diagnostic lenses (0–100)
Access = Σ w·a / Σ w · Stay = Σ w·s / Σ w over open doors · Reach = share of world (GDP+arrivals) behind doors with a ≥ 0.8.
Tier 3 ≥ 50 · Tier 4 ≥ 35
Tier 5 < 35
Residency research status
Residency scores and ranks are displayed as editorial estimates from the published dataset. Primary-source field review is ongoing; reviewed corrections override legacy values. Verify official rules before relying on them.
How evidence is classified
Rows are marked confirmed when two independent datasets corroborate them or when the source host is explicitly approved for that destination. A clickable URL alone never grants official status. Other rows remain visible as needs verification.
| Path | Cells | Meaning |
|---|---|---|
| dual | 32,954 | corroborated by two independent source datasets |
| clickable provenance | 5,733 | rows for which the UI retains a clickable source URL; this is not a claim that every row has one |
| needs verification | 6,403 | visible with a verification label rather than counted as confirmed |
Spearman ρ = 0.9951 vs a doors-count mobility rank — a refinement, not a contrarian gimmick.
Honest caveats
Not legal advice. Rules change; verify with the embassy before you fly. Corrections: hello@endlessriver.xyz
The matrix is re-checked monthly; residence facts use a rolling annual cycle plus event-driven checks. Check dates are shown where retained with the row.
Rows without corroboration or a retained official provenance URL stay visible as needs verification and are not presented as confirmed.
Your days are the other half of the story.
Countly counts the days you spend in each country — the 183-day rule, Schengen 90/180, and the presence rules that keep a residence permit alive.