How to Draw a Thermometer: Easy 10-Step Guide for Kids

Looking for a fun way to combine art and science? This tutorial is perfect for young learners to practice steady hand control while illustrating a classic scientific tool. All you need is a pencil, an eraser, and your favorite markers to bring this thermometer to life.

10 Steps

🎯 Final Result

A colorful, finished cartoon thermometer illustration.

Step-by-Step Instructions

Step 1: Sketching the Main Body

Outline of a thermometer body showing a wide top tapering into a narrow stem.

Draw a long, slightly curved vertical shape that is wider at the top and tapers down. Teacher's Tip: Keep your pencil pressure light so you can easily adjust the symmetry before moving on to the details.

Step 2: Adding the Bulb

Drawing the circular bulb at the base of the thermometer stem.

Add a rounded, spherical shape at the very bottom of your vertical line. This is the bulb that holds the liquid. Tip: Think of it like drawing a small circle attached to the base of your stem.

Step 3: Creating the Capillary Tube

Adding the inner capillary tube line inside the thermometer frame.

Draw a thin, inner channel running up the center of your thermometer. This is where the liquid rises. Tip: Use a ruler if you want perfectly straight edges, or keep it freehand for a more organic, cartoon look.

Step 4: Marking the Temperature Level

A horizontal line drawn across the tube to indicate the liquid level.

Draw a horizontal line across the capillary tube to show the current temperature reading. Tip: Decide if your thermometer is showing a 'hot' or 'cold' day by placing this line higher or lower.

Step 5: Defining the Scale Area

Adding a border line around the central tube to define the scale area.

Draw a curved border around the capillary tube to create the space for your numbers. Tip: Keep this border parallel to the outer edge of the thermometer for a professional, clean finish.

Step 6: Adding Glass Highlights

Drawing small parallel lines on the tube to create a glass reflection effect.

Draw small, parallel lines on the lower half of the tube to represent glass reflections. Tip: These little 'shine' marks make your drawing look 3D and realistic!

Step 7: Adding Upper Highlights

Adding matching reflection lines to the upper part of the thermometer.

Repeat the reflection lines on the upper portion of the tube. Tip: Try to keep these lines consistent in length so the glass looks uniform.

Step 8: Drawing Scale Marks

Adding small tick marks along the side of the tube for temperature measurement.

Add short, evenly spaced lines along the side of the tube. These are your temperature markers. Tip: Take your time here—the more even your spacing, the more accurate your thermometer will look.

Step 9: Final Touches and Labels

Adding a hanging loop at the top and temperature labels like C or F.

Draw a small loop at the top for hanging and add a 'C' or 'F' label to show the unit of measurement. Tip: Use a fine-tip pen for the letters to keep them neat and legible.

Step 10: Bring It to Life with Color

Final colored thermometer drawing with red liquid and clear glass shading.

Color the liquid inside red for a classic look, or silver for a realistic mercury effect. Tip: Use a light blue or gray for the glass areas to make the red liquid pop!