Overview
Password Strength works by analyzing the password provided — its length, character-set composition, and weak patterns like sequential or repeated characters. It returns a strength label, score, theoretical charset entropy and actionable recommendations. The password is never stored or returned.
Live Test Check Password Strength Source →
Formula
One function covers the whole catalog: the first argument names the source, the rest are its inputs, and the "field" pair says which single value lands in the cell. Formulas covers the grammar that applies to all of them.
=VERVE("passwordstrength", A2, "field", "strength")=VERVE.CALL("passwordstrength", A2, "field", "strength")A2 holds the password you are looking up. Drag the formula down and each row resolves on its own.
With literal values
Nothing has to come from a cell — typed values work the same way.
=VERVE("passwordstrength", "Password123", "field", "strength")=VERVE.CALL("passwordstrength", "Password123", "field", "strength")Inputs
Required inputs are positional, in the order below. Everything else is passed as a "name", value pair after them — the same shape as SUMIFS. Premium inputs are accepted on every plan but only take effect on plans that include them.
| Input | Type | Where it goes | Description |
|---|---|---|---|
passwordRequired | string | argument 2 (A2) | The password to check the strength of |
What lands in your sheet
The "field" pair is what makes the formula resolve to one cell. Its value is a dot-path from the table below, so swapping it is how you pull a different value — one formula per column.
Seeing everything at once
Drop the "field" pair and the formula returns the whole response instead: two columns, field name on the left and value on the right, spilling from the cell you typed in.
=VERVE("passwordstrength", A2)=VERVE.CALL("passwordstrength", A2)The second row's table would land on top of the first's, and every cell after the first reads #REF! (#SPILL! in Excel). Keep one per sheet, or name a field, and leave the cells below and to the right empty.
Response fields
Paths are relative to data. Each one is exactly what the "field" pair accepts, so swapping it is how you pull a different value into a cell. On a plan without a Premium field the cell reads #PREMIUM(field) rather than a value, so a locked field never looks like a real answer.
| Use as "field" | Type | Example cell value | Description |
|---|---|---|---|
strength | string | weak | Strength label: too weak, weak, medium or strong |
score | number | 1 | Numeric strength score (0-3, higher is stronger) |
passwordInfo | object | {…} | Character composition of the password: length and which character classes and patterns it contains |
passwordInfo.length | number | 11 | Number of characters in the password |
passwordInfo.hasSpecialCharacters | boolean | false | Whether the password contains special characters |
passwordInfo.hasNumbers | boolean | true | Whether the password contains numbers |
passwordInfo.hasLowercase | boolean | true | Whether the password contains lowercase letters |
passwordInfo.hasUppercase | boolean | true | Whether the password contains uppercase letters |
passwordInfo.hasSpaces | boolean | false | Whether the password contains spaces |
passwordInfo.hasSequentialChars | boolean | true | Whether the password contains a run of 3+ sequential characters (e.g. abc, 123) |
passwordInfo.hasRepeatedChars | boolean | false | Whether the password repeats the same character 3+ times in a row (e.g. aaa) |
recommendationsPremium | array | ["Use at least 12 characters","Add special characters","Avoid sequential characters (e.g. abc, 123)"] | List of recommendations to improve password strength |
entropyBitsPremium | number | 65.5 | Theoretical charset entropy in bits (length times log2 of the character-set size). This is the ceiling assuming random character selection; it does not account for dictionary words or common patterns, so use the strength/score for real-world guidance |
Filling a whole column
Both platforms make one batched call for a column rather than one request per cell, and both cost the same — 2 credits per row looked up. How you write it differs, because the two runtimes batch at different points.
=VERVE("passwordstrength", A2:A100, "field", "strength")In Google Sheets, give the arguments ranges and the answers spill down from the cell you typed in. Custom functions there run synchronously and in isolation, so dragged cells cannot be coalesced — the range form is how a column becomes one call. The "field" pair is required here: a per-row two-column table has nowhere to spill. Use a full column per input (A2:A100, not A2) — a single-cell reference is read as row 1 only and the rest of the column comes back blank.
In Excel, type the formula once and fill down — no range form and none needed, because its runtime is asynchronous and the add-in coalesces the calls a fill produces into a single batched request. Do not hand VERVE.CALL a range: Excel flattens it into positional arguments, so A2:A100 arrives as a hundred separate arguments and the cell reads #ERR rather than filling.
Either way, column A holds your password values and the answers land beside them, one row each, blank rows skipped.
When a cell doesn't fill
A failed lookup returns readable text starting with #ERR rather than a spreadsheet error, because Excel cannot show a custom message on a real error — you would get a bare #VALUE! with no reason. The trade-off is that IFERROR() will not catch it; test with LEFT(cell, 4) = "#ERR" instead. Error handling covers the rest.
| Cell reads | What happened |
|---|---|
#ERR Not connected | No API key saved. Open the side panel and connect your account. |
#ERR Replace <name> with a cell or value | A preview formula was copied as-is. Swap the placeholder for a cell reference. |
#ERR No "x" in passwordstrength | An option name this source does not take. The message lists the ones it does. |
#ERR No data point "…" | The "field" path is not in the response. Check it against the table above. |
#PREMIUM(field) | The field exists but your plan does not include it. |
#ERR Out of credits | The cycle's credits are spent. Usage resets on your billing date. |
Before the formula works
The add-in reads the API key you saved once in the side panel — the key never goes in the formula, so a shared sheet does not leak it and a collaborator without access simply sees the last calculated values.
- Install the add-in for Google Sheets or Excel.
- Open the side panel and sign in, or paste a key from your dashboard.
- Type the formula above into any cell.
Use cases
- Registration Form Validation
- Flag low strength scores during user registration to block predictable credentials before storing new customer profiles.
- Password Reset Verification
- When employees reset their workstation credentials, verify the input avoids repeated characters and sequential patterns before approving the change.
- Banking Portal Onboarding
- Fintech apps evaluate customer passphrases during setup, requiring a strong rating and varied character classes before activating account access.
- Credential Policy Enforcement
- To enforce corporate security standards, identity services check character class flags and minimum score levels across legacy user databases.
Other ways to use Check Password Strength
Set up Check Password Strength on VerveSheets, or reach the same source a different way. Your VerveSheets account and credits work on all of them — one key, one balance.
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