Share of Voice Calculator
Reviewed by Hamza Gujjar, Algorithm Architect & Software Developer
Last updated: July 27, 2026Measuring advertising presence, not just sales
Share of Voice measures a brand's advertising presence relative to its entire competitive category - distinct from market share, which measures actual sales or revenue captured.
Worked example
For $200,000 in brand ad spend against $1,000,000 total market ad spend:
SOV = 200000 / 1000000 x 100 = 20.0%
Marketing effectiveness research has repeatedly found that a brand's Share of Voice consistently exceeding its Share of Market tends to predict long-term market share growth - this relationship, often called the SOV/SOM gap, is a widely cited principle in advertising budget planning.