The present paper reports findings from a controlled large-scale (N = 1018) experimental study investigating how four different gender-fair forms influenced native French speakers’ estimated percentage of women compared to the masculine form (interpretable as generic) in 22 non-stereotyped French role nouns. The findings show that the masculine form generated lower perceived percentages of women compared to all other tested forms. In addition, gender-neutral and double forms were found equally efficient in resolving the male bias induced by the masculine form. Since the role nouns were non-stereotyped in terms of gender, these results suggest that the actual form of a role noun has indeed a strong influence on how the gender ratio of that role noun will be perceived. Moreover, the direction of the questionnaire’s response scale had a significant effect on the results, which entails methodological implications for future research. Finally, the provided ratios can be used for future studies investigating French role nouns in different gender-fair forms. In sum, our study suggests that gender-fair forms in French are an efficient tool for increasing the visibility of women, at least in nouns representing non-stereotypical activities.