Earth Measurements

Scale Calculator

Calculate map scale distance (1:25000, 1:50000, etc).

1 :

Example: Enter 50000 for 1:50k map

Real World Distance

5.0 km

Meters

5000 m

Miles

3.1 mi

How to Use This Calculator

1

Enter Values

Fill in the required fields with your numbers.

2

Calculate

Click calculate or see results update in real time.

3

Read Results

View detailed breakdowns and explanations below.

📘 Common Map Scales

Ratio = Map Distance : Real Distance

  • 1:24,000: Standard US Topo Map (USGS). 1 inch = 2000 feet.
  • 1:50,000: Standard Hiking Map. 2 cm = 1 km.
  • 1:500,000: Aviation Chart (Sectional). Covers large areas.

🧠 Scaling Up

Scales are unitless. A 1:100 scale means 1 anything on paper equals 100 anythings in real life.
1 inch = 100 inches.
1 lego brick = 100 lego bricks.

✍️ Worked Examples

Example 1: Hiking Trip

Map Scale: 1:25,000.

Measured: 4 cm on map.

Real: 4 cm × 25,000 = 100,000 cm.

Result: 100,000 cm = 1,000 meters = 1 km.

✅ Key Takeaways

  • Larger second number (e.g. 1:1,000,000) means a "Small Scale" map (zoomed out).
  • Smaller second number (e.g. 1:100) means a "Large Scale" map (zoomed in).

Frequently Asked Questions

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