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Noun combinations

Metric for vs. metric of

Both metric for and metric of are used, but they express different relationships. For usually shows purpose, while of shows what is being measured.

Quick answer

How do metric for and metric of differ?

Use metric for to describe the purpose or target of a measurement. Use metric of to identify the thing being measured or a specific type of measurement.

Customer retention is a key metric for subscription services.
Accuracy is an important metric of system performance.
The company created a new metric for evaluating risk.

Choose the pattern by meaning

These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.

1
metric for + purpose

Measurement used for a goal or evaluation

For introduces the purpose, area, or task the metric is used in.

They developed a metric for measuring customer loyalty.
This is a useful metric for comparing products.
2
metric of + quality

Measurement describing something

Of identifies the quality, performance, or feature being measured.

Response time is a metric of efficiency.
Attendance can be a metric of engagement.
3
metric on + topic

Data related to a topic

On sometimes appears when discussing reports or statistics about a subject.

The dashboard includes a metric on energy usage.

See the difference in context

The same subject can take different constructions because each sentence answers a different question.

Construction
Example
Meaning
metric for
We need a metric for success.
Shows the purpose or evaluation target.
metric of
Speed is a metric of performance.
Shows what quality or feature is measured.
metric on
The report tracks a metric on waste reduction.
Used in reporting contexts about a topic.
metric to
The metric to watch is conversion rate.
To does not directly follow metric as a fixed pattern here; it usually belongs to another structure.

Common mistakes

Some combinations appear in real text but do not mean what learners often assume.

Confusing purpose with description

Use for for intended use and of for the quality measured.

✕ Accuracy is a metric for performance. ✓ Accuracy is a metric of performance.

Using of before an activity goal

When the metric helps evaluate something, for is usually better.

✕ They created a metric of ranking candidates. ✓ They created a metric for ranking candidates.

Treating metric as an adjective here

Metric is usually a noun in these combinations.

✓ Retention is an important metric for the business.

Quick practice

Choose the expression that matches the intended meaning.

1. The team designed a metric ___ evaluating productivity.
2. Consistency is a metric ___ reliability.
3. The dashboard shows a metric ___ fuel consumption.

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Frequently asked questions

Is metric a noun or an adjective in these phrases?

In metric for and metric of, metric is normally a noun.

Can metric for and metric of both be correct?

Yes, but they express different meanings: purpose versus description.

Is metric on common?

It appears mainly in reporting and analytics contexts.

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