The formula
((Likes + comments + saves + shares) ÷ reach) × 100
This is a calculation guide, not a connected analytics tool.
Worked example
Suppose a Reel receives 180 likes, 12 comments, 30 saves and 18 shares. With reach of 8,000, those 240 interactions produce a 3% reach-based rate. Views and reach are not interchangeable.
Choose comparable inputs
Keep Reels and still-image posts in separate groups when the audience behaviour differs. Describe whether your total includes saves and shares; otherwise another reader cannot reproduce the calculation.
A result you can explain
- Definition. Write down every metric included in the numerator.
- Denominator. Use views, reach or followers consistently.
- Window. Compare the same period after publication.
- Context. Keep paid distribution and organic distribution distinguishable.
What the number does not establish
A calculated rate summarises the inputs you choose. It does not prove an audience is authentic, a sale was caused by a post or that a future post will perform similarly. Keep the original counts so another person can check your calculation.