Tradesman Pro
Plumber’s Field Calculator
Free · Designed for iPad. Not verified for macOS.
Tradesman Pro is a completely free precision layout calculator built specifically for plumbers and pipefitters. Designed for job site efficiency, it handles standard and rolling offsets, triangle layout, and everyday feet-and-inch math — with full support for fractional inches and fitting take-offs.
Whether you're running a 22°, 45°, or 60° offset, rolling a bend around an obstruction, or just adding up a run off the tape, Tradesman Pro lets you work in feet, inches, or mixed fractions and see results instantly — with the full formula behind every answer.
THREE CALCULATORS IN ONE
OFFSET CALCULATOR
• Travel and Advance for 22°, 45°, and 60° bends
• Rolling offset calculations using rise and run
• Enter take-offs as one combined total, or separately for each fitting
• Live "converted to inches" and "offset minus take-off" readouts as you type
• Toggle results between inches and feet/inches
TRIANGLE CALCULATOR
• Right triangles and general triangles (SSS, SAS, ASA, AAS)
• Solve unknown sides and angles for custom angles and compound bends
• Interactive pinch-to-zoom diagram that redraws as you enter values
• Perimeter, area, and triangle type, plus heights, medians, angle bisectors, inradius and circumradius
FEET-INCH CALCULATOR
• Add, subtract, multiply and divide measurements directly — no converting to decimals first
• Dedicated Feet, Inch, and fraction keys, so you never need the text keyboard
• Running tape of every calculation, saved between sessions — tap any line to bring that answer back down
• Multiply two lengths for square footage, or three for cubic feet and cubic yards
• Divide a run into equal parts, or find how many times one length fits into another
BUILT FOR THE JOB SITE
• Fractional or decimal display, with rounding to 1/8", 1/16", or 1/32"
• Live updates as you type
• Tappable formula explanations for training and clarity — copy the full step-by-step breakdown into notes or a text
• Clean, high-contrast interface optimized for job site readability
• Full Dynamic Type support for larger text
• Works on iPhone and iPad
• Completely free — no ads, no subscriptions, no accounts, no paywalls
Whether you're laying out a job, double-checking your math, or teaching apprentices, Tradesman Pro makes it faster and easier to get the job right the first time.
Privacy Policy: https://rattle-saffron-2e3.notion.site/Privacy-Policy-22ade7377307805c9fb8dfe3b61e998f
EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
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NEW: Feet-Inch Calculator
Add, subtract, multiply, and divide feet-and-inch measurements on a proper trade keypad — no converting to decimals first. Every calculation is saved to a running tape you can tap to bring an answer back down, and it's still there next time you open the app. Multiply two lengths for square footage, or three for cubic feet and yards.
OFFSET CALCULATOR
• "Setback" is now called "Advance," with plainer explanations of what Travel and Advance mean on the job
• Enter take-offs as one combined total, or separately for each fitting
• Pick your rounding — 1/8", 1/16", or 1/32" — in Settings
ALSO IN THIS UPDATE
• Negative results now display correctly instead of showing zero
• Measurement fields accept more formats, including 5'6" and 5-1/2
• Various fixes and polish throughout
Free, no ads, no subscriptions. Feedback is always welcome from the Settings screen — it goes straight to the developer.
The developer, Nichole Holmstedt, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- User Content
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Nichole Holmstedt
- Size
- 11.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2025 Nichole Holmstedt