AquaRatio

AquaRatio is a focused tool for estimating full-pipe flow using the Manning equation. Enter pipe diameter, roughness, length, and head loss, and you’ll get slope, velocity, and discharge in both SI and US customary units.

• Fast unit conversion (cm/in, m/ft, m/s → ft/s, m³/s → L/s & gpm)
• Presets for typical Manning’s n values
• Copy & Share results for reports
• Keyboard and screen-reader friendly

Note: For design-critical work, verify assumptions (e.g., full flow, steady state) and consult local standards.