Run the math on site
Open a calculator, enter the run or fixture count, and get the answer with the governing limit and full breakdown.
BaseMapped product
Coming soon · local-first release prep
BaseCalc Plumbing
Run the math. Save the worksheet.
Plumbing field calculators and local job worksheets for plumbers. Run pipe sizing, pressure drop, drainage, vent, water heater, and gas pipe math on site, capture scope and quantities, then hand final billing to SpeakSheet.
Coming to App Store & Google Play
See launch statusThe app is not publicly downloadable yet. The local-first release and store records are being prepared for review.
18
Plumbing field calculators
JOB
worksheets without billing clutter
Local
first, no account required
Why it works
The calculator and the field worksheet in one tool.
Most apps do either pipe math or job notes. BaseCalc Plumbing keeps pipe sizing, pressure drop, drainage, vent, water heater, gas pipe, materials, and worksheet capture in the same field workflow.
Capture the worksheet
Keep scope, quantities, site notes, and calculation context in one local job record.
Hand billing to SpeakSheet
BaseCalc Plumbing stays focused on field math and job worksheets. SpeakSheet stays the final invoice app.
Calculators
18 plumbing field calculators, every answer explained.
Velocity
Pipe Velocity
Velocity from GPM and nominal pipe size.
GPM
Flow Rate
GPM from velocity and nominal pipe size.
Size
Pipe Sizing
Minimum pipe size from GPM and max velocity.
ΔP
Pressure Drop
Hazen-Williams pressure loss.
Drain
Drainage Sizing
Fixture units to minimum drainage pipe diameter.
Vent
Vent Sizing
Fixture units plus vent length to minimum vent diameter.
WH
Water Heater
First-hour rating and recovery estimate.
Gas
Gas Pipe Sizing
BTU/hr and length to minimum gas pipe size.
TDH
Pump Head
Total dynamic head from lift, friction, and pressure.
Volume
Pipe Volume
Gallons of water in a given length of pipe.
PSI
Water Pressure
Pressure and head conversion.
Exp
Pipe Expansion
Thermal expansion length change.
FU
Fixture Units
Count common fixtures to total fixture units.
Meter
Water Meter Sizing
Fixture units to meter size.
Irrig
Irrigation Flow
Zone GPM from heads and GPM per head.
Septic
Septic Tank
Bedrooms and daily flow to minimum tank volume.
Grease
Grease Interceptor
Fixture units or GPM to interceptor size.
Backflow
Backflow Pressure
Pressure loss across backflow preventer.
Real app screens
The field instrument interface.
These are screenshots from the BaseCalc Plumbing field workflow.
What's inside
Code-aware math plus field records.
Answers you can defend
Each result shows clear PASS / FAIL messaging, the limit that governs it, the final answer, and the full breakdown.
- IPC / UPC-aware concepts
- Governing limit shown
- Saved job-site history
Job worksheets, not invoices
Create clean field worksheets with scope, quantities, site notes, status, and PDF export without pricing fields.
- Job contacts with site notes
- Scope and quantity capture
- Worksheet PDF export
Built for the field
A high-contrast "field instrument" interface in dark or light, designed to be read on a job site, not a desk.
- Works offline by default
- Light & dark themes
- No account required for v1
Development status
Built and tested. Not in the stores yet.
We keep this honest: BaseCalc Plumbing is a finished, tested build, but it is not publicly downloadable today. The remaining work is final store setup, submission, and the launch decision.
Done
Core app tested
All 18 calculators, history, job contacts, worksheets, materials, and PDF export are implemented. The calculator engine test suite covers the field tools.
Done
Local-first privacy model
The v1 launch workflow stores job contacts, worksheets, settings, and calculations on device. No BaseCalc Plumbing account or cloud sync is required.
In progress
Store submission next
BaseCalc Plumbing is not publicly available yet. The App Store and Google Play records still need final review setup and submission.
In progress
SpeakSheet boundary is intentional
BaseCalc Plumbing captures the field worksheet. SpeakSheet remains the customer-facing invoice and billing product.
FAQ
Before you wait for launch.
BaseCalc Plumbing is a professional reference tool. Always verify against the current IPC or UPC and your local amendments.
Is BaseCalc Plumbing available to download?
Not yet. The iOS and Android builds are complete and tested, but the App Store and Google Play listings still need their first manual setup before the app goes into review. It is not publicly downloadable today.
Which calculations does it cover?
18 plumbing field calculators: Pipe Velocity, Flow Rate, Pipe Sizing, Pressure Drop, Drainage Sizing, Vent Sizing, Water Heater, Gas Pipe Sizing, Pump Head, Pipe Volume, Water Pressure, Pipe Expansion, Fixture Units, Water Meter Sizing, Irrigation Flow, Septic Tank, Grease Interceptor, and Backflow Pressure.
Does it do invoicing too?
No. BaseCalc Plumbing intentionally stops at job worksheets: scope, quantities, site notes, calculation history, and worksheet PDFs. Final customer invoices belong in SpeakSheet.
Does it work offline?
Yes. Calculations, history, job contacts, worksheets, settings, and PDF export are designed to work offline in the v1 launch build. No BaseCalc Plumbing account is required.
How much will it cost?
The initial launch path can stay free and local-first. Subscriptions or ads should only be disclosed if they are intentionally enabled in the submitted build.
Can I rely on it for code compliance?
BaseCalc Plumbing is a professional reference tool. Always verify results against the current IPC or UPC, ASPE guidelines, and your local amendments. The authority having jurisdiction has the final say.
BaseCalc Plumbing by BaseMappedLaunching to the App Store & Google Play soon.
The build is finished and tested. When the store listings go live, BaseCalc Plumbing will be the app plumbers use to run pipe, pressure, drainage, vent, water heater, and gas pipe math, save local worksheets, and hand billing to SpeakSheet.