Make the units make sense

Follow the flow.
Understand the math.

Convert units, see each step and try a problem yourself. A focused practice space for the arithmetic behind volume, rate and time.

Start practicing ↗See the method
Free · Sixteen original drills · Worked calculations

One worked example

100 US gal/min
→ MGD

100 × 1,440 minutes/day
÷ 1,000,000
0.144 MGD

Million US liquid gallons per fixed 24-hour day.

Understand why the units cancel

Convert with context

Work between US gallons, liters, cubic meters, cubic feet, US and metric flow rates, and time units.

See the reasoning

Follow the conversion to base units, the formula and the final unit.

Try, then check

Solve sixteen original drills and reveal the worked answer when you need it.

Practice away from the screen.

Build a selected worksheet and separate worked answer key for your next study session.

Start with a specific conversion.

A small practice tool alongside your course.

Use it for arithmetic study. It does not provide treatment decisions, chemical dosing, approved training hours or an examination credential.

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