Calculators
Coming soon

Fixtures + DFU

Drainage Fixture Units, pipe sizing and vent stack for residential bathrooms and kitchens.

Free · no signupInstant results
What it asks and what it returns

Data in, numbers out.

You give it
Fixture list (lav, shower, WC, washer…)
Horizontal drain run (ft)
Number of stories
It returns
Total DFU per branch + vent stack
Minimum pipe diameter per branch
Vent stack size per code
Coming soon

Want us to notify you when it ships?

We'll email you the day it ships. In the meantime, Olynx already covers your trade's main take-off.

Create account — notify me

No card · cancel anytime

Ready to scale?

Join thousands of service professionals who use Olynx to grow and manage their operations without the growing pains.

Locked rate for life$2,000 website includedCancel anytime