In demand means popular or wanted. On demand means available whenever requested. Of demand usually appears inside larger expressions such as level of demand.
Use in demand for something popular or sought after. Use on demand for services available whenever needed. Of demand is not usually used alone; it normally follows another noun such as increase, level, or shortage.
These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.
Use in demand for jobs, products, skills, or services that many people want.
Use on demand for media, transport, printing, or services available at any time.
Of demand usually follows a noun that measures or describes demand.
The same subject can take different constructions because each sentence answers a different question.
Some combinations appear in real text but do not mean what learners often assume.
On demand refers to availability, not popularity.
✕ This skill is on demand. ✓ This skill is in demand.In demand means wanted by many people.
✕ The movie is in demand on our platform. ✓ The movie is available on demand on our platform.Of demand usually needs another noun before it.
✕ The company studied of demand. ✓ The company studied the level of demand.Choose the expression that matches the intended meaning.
Paste the complete sentence below. Linguix checks the preposition together with grammar, spelling, punctuation, and style.
It means many people want or need something.
It means available whenever requested or needed.
Yes, but usually only inside a larger phrase such as level of demand or increase of demand.
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