Free Breeding Tool
French Bulldog DNA Calculator
Predict coat colors, patterns, and health outcomes for your Frenchie litter before you breed. Covers all 18 major gene loci. No signup needed.
Launch the CalculatorWhat the Calculator Predicts
Our Frenchie DNA Calculator covers every major color and health gene so you can plan your breeding program with confidence.
Coat Color Prediction
Predict fawn, brindle, blue, chocolate, lilac, cream, and every rare shade your pairing can produce.
Health Risk Screening
Flag dangerous pairings that could produce puppies affected by DM, HUU, JHC, or CMR1.
18 Gene Loci Covered
B, D, E, K, A, S, M, I, co, and health genes — the most complete free calculator for Frenchies.
Exact Probability Tables
Get percentage breakdowns for every possible genotype combination in your litter.
Print & Save Results
Export your results as a printable report or text file for your breeding records.
Instant Results
No waiting, no signup. Enter your dogs' genotypes and get results in under a second.
How to Use the DNA Calculator
Get DNA Test Results
Test your sire and dam through Embark, Animal Genetics, or DDC. You'll get a genotype for every locus.
Enter Genotypes
Select each dog's genotype for every gene locus in our calculator. It takes about 60 seconds.
View Predictions
Hit calculate and see full probability tables for coat colors, patterns, and health risks.
Ready to Predict Your Litter?
The French Bulldog DNA Calculator is free, fast, and covers every gene that matters. Start planning your next breeding with real genetic data.
Open the DNA CalculatorRelated Resources
Dive deeper into Frenchie genetics, health screening, and responsible breeding practices.
Frenchie Color Genetics
Master every color locus: B, D, E, K, A, S, and cocoa. Learn how blue, lilac, and cream Frenchies are produced.
Read moreDM in French Bulldogs
Degenerative Myelopathy explained: inheritance, testing, and safe breeding pairings to avoid paralysis.
Read moreHUU in French Bulldogs
Hyperuricosuria and bladder stones: symptoms, management, and how to breed safely around HUU.
Read moreJHC in French Bulldogs
Juvenile Hereditary Cataracts: how it steals vision from young Frenchies and how DNA testing prevents it.
Read moreCMR1 in French Bulldogs
Canine Multifocal Retinopathy: retinal lesions, vision impact, and responsible breeding guidelines.
Read moreHealth DNA Testing Guide
Why testing before breeding is essential. Covers Embark, Animal Genetics, DDC, and how to interpret results.
Read moreRead DNA Test Results
Decode every section of your DNA report. Understand B, D, E, K, A, S loci and health genes in plain English.
Read moreBest DNA Tests 2025
Embark vs Animal Genetics vs DDC — compared on price, gene coverage, accuracy, and value for breeders.
Read moreGenetics 101 for Breeders
Learn Frenchie genetics from the ground up. Dominant vs recessive, loci, and how to breed smarter.
Read moreFluffy Lilac Genetics
Longhair + dilute + chocolate: the ultra-premium Fluffy Lilac Frenchie genetics explained for breeders.
Read moreBlue Merle Guide
M-locus merle genetics, D-locus dilute, safe breeding rules, and pricing for Blue Merle Frenchies.
Read moreRare Color DNA Breakdown
Which Frenchie colors are truly rare vs marketing terms. Full DNA verification guide for buyers.
Read moreBlue Frenchie Genetics
D-locus dilute gene (d/d) explained. How blue is produced, breeding outcomes, and pricing.
Read moreChocolate Frenchie DNA
B-locus chocolate (b/b) and co-locus cocoa. Testable vs non-testable chocolate explained.
Read moreLilac Frenchie Genetics
The d/d + b/b combo. How dilute and chocolate create the silvery-lilac shade.
Read moreCream Frenchie Genetics
E-locus recessive cream (e/e). How cream differs from white and how it interacts with other genes.
Read moreIsabella Frenchie DNA
Double dilute chocolate: d/d + b/b + co/co. The rarest Frenchie color explained.
Read moreMerle Frenchie Genetics
M-locus merle: single vs double merle, health risks, and safe breeding practices.
Read moreBrindle Frenchie Patterns
K-locus brindle (Kbr) hierarchy, reverse brindle, and brindle color combinations.
Read morePiebald Frenchie Genetics
S-locus white spotting (Sp). Pattern types, deafness risk, and BAER testing.
Read moreTan Point Frenchie
A-locus phantom tan (at). Tricolor patterns and rare tan point combinations.
Read moreFluffy Frenchie Genetics
L-locus longhair gene (FGF5). Why fluffies cost more, grooming, and color combos.
Read moreFrequently Asked Questions
What is a French Bulldog DNA Calculator?
A French Bulldog DNA Calculator is a free online tool that predicts coat color, pattern, and health outcomes by combining the known genotypes of a sire and dam. It uses Mendelian genetics to show probability percentages for every possible puppy outcome across all major gene loci.
How accurate is the DNA Calculator for Frenchies?
The calculator is highly accurate for genotype-based predictions. If you input verified DNA test results from labs like Embark or Animal Genetics, the probability outputs are mathematically precise. The tool covers all 18 major loci including B-locus, D-locus, E-locus, merle, intensity, and health genes.
Which gene loci does the calculator cover?
Our calculator covers B-locus (chocolate), D-locus (blue/dilute), E-locus (cream), K-locus (brindle), A-locus (fawn/sable), S-locus (piebald), M-locus (merle), I-locus (intensity), co-locus (cocoa), and health genes including DM, HUU, JHC, and CMR1.
Can the calculator predict health risks in puppies?
Yes. The calculator flags pairings that risk producing puppies affected by Degenerative Myelopathy (DM), Hyperuricosuria (HUU), Juvenile Hereditary Cataracts (JHC), and Canine Multifocal Retinopathy (CMR1). It warns you when two carriers are bred together.
Do I need DNA test results to use the calculator?
Yes, you need the genotype results for both the sire and dam. These come from DNA testing services like Embark, Animal Genetics, or DDC. Each dog receives a genotype for every locus, such as D/D, D/d, or d/d for the dilute gene.
Is the French Bulldog DNA Calculator free to use?
Absolutely. The calculator is 100% free with no signup required. Just enter your dogs' genotypes, hit calculate, and get instant results you can print, save, or copy.