Learning & community · focused workspace

Volunteer Preference Matcher

Assign volunteers to capacity-limited roles using ranked choices, maximizing placements before minimizing total preference rank.

Volunteer assignmentsCompare scenariosCSV & printable report

Make the next step clearer

Open CSV / project

Preparing the worked example…

Make it yours

Settings & assumptions

Volunteers

Your result, explained

02 / RESULTS

Read the result in context

Equal capacity for every role. Uses maximum-cardinality minimum-cost matching on entered rankings; availability, qualifications and consent are not inferred.

How to use Volunteer Preference Matcher

Explore the worked example. Use ranked role preferences and an equal per-role capacity to maximize placements and reduce preference-rank cost.
Replace the volunteers with your own entries. Set available role labels, places per role.
Choose “Match volunteers to roles”. Review volunteer assignments and role coverage, then compare the visual overview with the detailed tables.
Capture alternative scenarios, download a reusable project and export the selected table or a report when you are ready.

A starting point

Use ranked role preferences and an equal per-role capacity to maximize placements and reduce preference-rank cost. The example is illustrative and can be replaced.

Know what you are comparing

What does the matcher optimize?

It first seeks the maximum number of placements, then minimizes the sum of preference ranks using a capacity-constrained network assignment. Unlisted roles are not assigned.

Files, privacy & saving

Calculations run locally in a browser worker. Input CSV files use the column names in the downloadable template and keep your current settings. Projects restore inputs and up to four scenarios. Imports are limited to 1 MiB and 100 entries. There is no automatic saving. Public pages include advertising and optional analytics; see our privacy policy.

CSV exports contain the entire selected table. JSON and printable HTML reports include all result tables; open the report and use your browser’s Print command for PDF.

Using Volunteer Preference Matcher

Assign volunteers to capacity-limited roles using ranked choices, maximizing placements before minimizing total preference rank.

Explore the worked example. Use ranked role preferences and an equal per-role capacity to maximize placements and reduce preference-rank cost.
Replace the volunteers with your own entries. Set available role labels, places per role.
Choose “Match volunteers to roles”. Review volunteer assignments and role coverage, then compare the visual overview with the detailed tables.
Capture alternative scenarios, download a reusable project and export the selected table or a report when you are ready.

Example

Use ranked role preferences and an equal per-role capacity to maximize placements and reduce preference-rank cost.

Questions & answers

What does the matcher optimize?

It first seeks the maximum number of placements, then minimizes the sum of preference ranks using a capacity-constrained network assignment. Unlisted roles are not assigned.

Can I compare and save alternative plans?

Yes. Capture up to four calculated scenarios, restore their inputs and save them in a project JSON file. There is no automatic saving.

How do I bring in my own entries?

Download the CSV template, retain its column names and replace the example rows. Imports are limited to 100 entries and 1 MiB. A saved project also restores settings.

What should I check before using the result?

Equal capacity for every role. Uses maximum-cardinality minimum-cost matching on entered rankings; availability, qualifications and consent are not inferred.