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How these matches are calculated
Every shade is mapped to a shared system: depth (1 = fairest, 10 = deepest) and undertone (Cool, Neutral, Warm, or Olive). The converter finds the MAC Studio Fix shade closest in depth, weighted 70%, and undertone compatibility, weighted 30%. It's the same engine behind our interactive matcher.
Two caveats: brands classify undertones differently (MAC's NC/NW runs opposite to most), and formulas oxidize differently — a matte formula can darken 1–2 levels over a few hours.
FAQ
How accurate is this Too Faced BTW to MAC Studio Fix conversion?
Each match is scored on depth (how light or dark) and undertone compatibility. Matches above 90% are usually very close; between 80–90% expect a slight difference in undertone or depth. Formula differences (matte vs dewy) and oxidation also affect how a shade looks on skin, so always swatch in natural daylight before buying full size.
My Too Faced BTW shade isn't listed — what do I do?
This chart covers the most-searched Too Faced BTW shades. If yours is missing, pick the closest neighboring shade with the same undertone — your MAC Studio Fix match will be nearly identical. You can also use the interactive matcher on our homepage.
Can I convert MAC Studio Fix back to Too Faced BTW?
Yes — see the reverse chart: MAC Studio Fix to Too Faced BTW. Note that reverse matches aren't always symmetrical, because each brand has different shade ranges and gaps.