Flow Rate Pipe Calculator Pro

Line Zpotting Finance In-app purchases

Offline pipe FLOW calculator: diameter, velocity, Reynolds, Darcy and Hazen.

Downloads: 10+; on Google Play
Price: Free; In-app purchases
Updated: Sep 25; 2026 · v1.0.1

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About Flow Rate Pipe Calculator Pro

FLOW is an offline pipe flow rate calculator for water in round, full pipes. Size a run from inner diameter, length, and material — or invert a frictional pressure drop to estimate flow. There is no live hardware and no system-online dashboard.

What you can calculate

• Continuity: Q = A·v (flow from velocity or velocity from flow)
• Darcy–Weisbach head loss with a Churchill friction-factor approximation and a commercial roughness table
• Hazen–Williams (water) as a comparison method
• Reynolds number and laminar / transitional / turbulent band
• Velocity warnings when the mean speed is low, high, or excessive
• Unit toggles: L/min, m³/h, GPM · mm/inch · bar/psi/kPa · m/ft

Save named scenarios on the device and share a text summary (FLOW Pro). Charts are educational plots of the current inputs — not 24-hour telemetry.

FLOW Pro (soft yearly unlock, pro.yearly)

• Unlimited saved scenarios (free tier keeps 3)
• Custom roughness ε and Hazen–Williams C
• Extra materials and Darcy vs Hazen comparison
• Share/export and educational charts

Educational disclaimer

Results are estimates for straight circular water pipes. They omit fittings, elevation, pumps, and code tables. FLOW is not a licensed plumbing or engineering stamp.

Subtitle: Pipe GPM Plumbing
In-app brand: FLOW
Category: Tools

What’s new

Version 1.0.1 · Updated September 25, 2026

1.0.1 — Offline pipe flow (Darcy–Weisbach / Hazen–Williams). Pro via Play Billing (pro.yearly).

App details

Flow Rate Pipe Calculator Pro is a free Finance app for Android with 10+ installs on Google Play. It was released on September 25, 2026 and last updated on September 25, 2026. It's developed by Line Zpotting. It requires Android 6.0 or later. The app offers in-app purchases.

Category: Finance
Installs: 10
In-app purchases: Yes
Ads: No ads
Version: 1.0.1
Requires Android: 6.0
Content rating: Everyone
Released: September 25, 2026
Last updated: September 25, 2026
Developer: Line Zpotting

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Flow Rate Pipe Calculator Pro

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About Flow Rate Pipe Calculator Pro

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