Unit Conversion Practice — Length, Mass, Volume & Time (Free)
Practice converting units of measurement with this free tool. Convert between units of length, mass, volume and time — the tool checks your answer instantly and shows the conversion factor used.
How the practice works
- Pick a difficulty.
- Convert the measurement and press Check.
- Read the feedback and step-by-step solution, then press Next.
How to convert units
Multiply (or divide) by the conversion factor between the two units. For example, 1 foot = 12 inches, so 5 feet = 5 × 12 = 60 inches. The solution panel shows the factor and the arithmetic.
Frequently asked questions
What units are covered?
Common length, mass/weight, volume, and time units in both metric and US customary systems.
Is it free?
Yes — unlimited problems, no sign-up, with progress saved in your browser.
Does it show the factor?
Yes — each answer comes with the conversion factor and the calculation.
Read the full lesson: learn the method step by step.
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