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Quizzes > Mathematics

Unit conversion quiz: practice metric and imperial conversions

Quick measurement conversion quiz with instant results and helpful tips.

Editorial: Review CompletedCreated By: Ratna SharmaUpdated Aug 27, 2025
Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
paper art illustration of rulers showing metric and imperial scales for conversion quiz on coral background

This unit conversion quiz helps you practice converting between metric and imperial units, like centimeters to inches and liters to gallons, with instant feedback. Build speed and spot weak areas, then try our measurement practice quiz for broader skills, sharpen your conversion factor practice for science problems, or explore kitchen unit conversions for cooking and baking.

How many meters are there in 100 centimeters?
10 meters
100 meters
1 meter
0.1 meters
A meter consists of 100 centimeters, so dividing 100 cm by 100 gives 1 meter. Understanding the base units of the metric system helps simplify conversions. This is a fundamental concept in metric measurements. .
Convert 0.5 kilograms to grams.
5,000 grams
500 grams
5 grams
50 grams
One kilogram equals 1,000 grams, so half a kilogram equals 500 grams. Metric prefixes are powers of ten, making these conversions straightforward. Practicing these builds fluency with the system. .
How many liters are in 2,000 milliliters?
200 liters
2 liters
0.2 liters
20 liters
There are 1,000 milliliters in a liter, so 2,000 mL equals 2 liters. Knowing metric prefixes helps you quickly convert between units. This basic conversion underpins many everyday measurements. .
Convert 3 kilometers to meters.
30 meters
30,000 meters
3,000 meters
300 meters
A kilometer equals 1,000 meters, so 3 km equals 3,000 meters. This is a basic yet essential metric conversion. Mastery of these conversions makes larger units more intuitive. .
Approximately how many kilometers are in 5 miles?
9.2 kilometers
7.5 kilometers
6.2 kilometers
8.05 kilometers
One mile equals approximately 1.60934 kilometers; multiplying by 5 gives about 8.0467 km, rounded to 8.05 km. This conversion is common in travel and mapping contexts. Understanding the mile-to-kilometer factor is key when switching systems. .
How many ounces (oz) are there in 250 grams (approx)?
15.7 oz
8.82 oz
12.3 oz
6.5 oz
One ounce equals approximately 28.3495 grams. Dividing 250 grams by 28.3495 yields about 8.82 oz. This conversion is often used in cooking and nutrition. Precise factors help maintain accuracy. .
Convert 3 feet into centimeters.
91.44 cm
76.2 cm
100 cm
120 cm
One foot equals 30.48 centimeters. Multiplying by 3 gives 91.44 cm. Imperial-to-metric conversions often require memorizing key factors. Keeping track of two decimal places ensures precision. .
How many liters are in 2 U.S. gallons?
5.23 liters
4.54 liters
6.57 liters
7.89 liters
One U.S. gallon is approximately 3.78541 liters. Multiplying by 2 yields about 7.57082 liters, often rounded to 7.57 L. Double-checking the factor ensures correct conversions. .
Convert 50 miles per hour to meters per second (m/s) approximately.
13.41 m/s
22.35 m/s
9.22 m/s
18.29 m/s
One mph equals 0.44704 m/s. Multiplying 50 by 0.44704 gives about 22.352 m/s; if using 30 mph = 13.41 m/s, ensure correct factor. Re-expressing speed units requires both distance and time conversion factors. Accuracy depends on precise constants. .
What is 70°F in degrees Celsius, rounded to the nearest whole number?
20°C
21°C
23°C
18°C
To convert °F to °C, subtract 32 then multiply by 5/9: (70 ? 32) × 5/9 = 21.11°C, rounded to 21°C. Actually, the correct rounding is 21°C. Temperature conversions must follow arithmetic order precisely. .
Convert 10 acres into square meters (1 acre = 4,046.86 m²).
404.686 m²
40,468.6 m²
404,686 m²
4,046.86 m²
Multiplying 10 acres by 4,046.86 m² per acre gives 40,468.6 m². Converting land area often requires handling large numerical factors. Keeping track of units through each step prevents mistakes. .
If a car travels at 60 miles per hour, what is its speed in kilometers per hour?
72.41 km/h
96.56 km/h
88.53 km/h
100 km/h
One mile equals 1.60934 km, so 60 mph × 1.60934 = 96.5604 km/h. Speed conversions multiply both the distance factor and maintain the time unit. This is common in comparing speed limits internationally. .
Convert 5 cubic meters to cubic yards (1 m³ = 1.30795 yd³).
10.23 yd³
4.05 yd³
3.84 yd³
6.54 yd³
One cubic meter equals about 1.30795 cubic yards. Multiplying by 5 yields approximately 6.53975 yd³, rounded to 6.54 yd³. Volume conversions in three dimensions compound the unit factors. Accuracy demands precise constants. .
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Study Outcomes

  1. Identify Metric vs. Imperial Units -

    Learn to distinguish between common metric and imperial measurements such as meters, liters, inches, and pounds.

  2. Convert Length Measurements -

    Apply precise conversion factors to change lengths between inches and centimeters, feet and meters, and more.

  3. Convert Weight Measurements -

    Use accurate calculation methods to transform weights between pounds and kilograms with confidence.

  4. Apply Conversion Rules in Context -

    Solve real-world measurement problems by selecting and using the correct unit conversion steps.

  5. Estimate Quick Conversions -

    Develop strategies for rapid, approximate conversions to streamline everyday measurement tasks.

  6. Boost Unit Conversion Confidence -

    Build accuracy and speed through targeted practice with our unit conversion quiz questions.

Cheat Sheet

  1. Inch to Centimeter Basics -

    The inch-to-centimeter conversion is exact: 1 in = 2.54 cm, as defined by NIST standards. To convert inches to centimeters, simply multiply by 2.54 (e.g., 12 in × 2.54 = 30.48 cm). A handy mnemonic is "two and a half plus a smidge" to remember 2.54.

  2. Pounds and Kilograms Made Simple -

    By international agreement (SI brochure), 1 lb = 0.45359237 kg. For quick estimates in your unit conversion quiz, round to 0.4536 and multiply (150 lb × 0.4536 ≈ 68.04 kg). Think "half a kilo minus fifty grams" to keep the factor in mind.

  3. Volume Swaps: Liters to Gallons -

    The USGS defines 1 gal (US) = 3.78541 L, so 1 L ≈ 0.26417 gal. If you need to switch from liters to gallons in a metric to imperial conversion quiz, multiply liters by 0.264 (e.g., 3.8 L × 0.264 = 1.0 gal). Remember "three point eight five" to recall the gallon in liters.

  4. Mastering Temperature Formulas -

    Converting Celsius to Fahrenheit uses F = (C × 9/5) + 32, and the inverse is C = (F − 32) × 5/9, a staple in NASA's engineering guides. For example, 25 °C × 9/5 + 32 = 77 °F. A quick tip: multiply by two, subtract a tenth, then add 32 for an approximate F value.

  5. Metric Prefix Power-Up -

    Understanding SI prefixes - from kilo (10³) down to milli (10❻³) and beyond - is essential for unit conversion practice. Use the classic mnemonic "King Henry Died Monday Drinking Chocolate Milk" to recall kilo-, hecto-, deca-, deci-, centi-, milli-. This knowledge helps you tackle everything from nanometers to megawatts in your conversion of units quiz.

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