Fragrance Blending Ratio Calculator
Calculate exact ounces of each fragrance oil for custom scent blends.
Blend Setup
Fragrance Oils (up to 4)
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Top, Middle & Base Note Guide
A well-balanced fragrance blend typically follows a 30 / 50 / 20 ratio across scent families:
Top Notes
~30%
Citrus, herbs, light florals — first impression, evaporates fastest
Middle Notes
~50%
Florals, spice, fruit — the heart of the blend, most prominent
Base Notes
~20%
Woods, musk, vanilla, amber — longest lasting, anchors the blend
Blending Tips
Start with your base note, then add middle, then top. Smell the blend on a strip between each addition. A blend will smell different on cold test versus when heated in a candle — always do a hot throw test before finalizing ratios.
Record every experiment. Even "failed" blends teach you how individual fragrances interact. Some combinations need 24–48 hours to "marry" before the true scent emerges.