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Unit Conversion Calculator

Convert length, area, volume, weight, and temperature instantly with our unit conversion calculator. Swap units, use presets, and copy results effortlessly.

Convert anything in three steps

Choose a category, enter a value, and we show precise conversions plus alternative targets and your past conversions.

Length converter

Convert meters, feet, miles, inches, and more.

Presets

Result

1 m =

3.28084 ft

SI base unit

Popular conversions in Length

  • Meter1 m
  • Kilometer0.001 km
  • Mile0.000621 mi
  • Yard1.093613 yd

Recent conversions

No history yet. Click “Save to history” after converting.

    How to get the most from this unit conversion calculator

    1. Select the measurement type first—it ensures you only see relevant units.
    2. Type your value or tap a preset chip to autofill common scenarios.
    3. Swap units for reverse calculations, then copy or save the result for later.

    Handy conversion tips

    • For quick head math: 1 inch ≈ 2.54 cm, 1 lb ≈ 0.45 kg, 1 gallon ≈ 3.79 L.
    • Temperature formulas: °C = (°F − 32) × 5/9, °F = (°C × 9/5) + 32, K = °C + 273.15.
    • Convert area by squaring the length factor (example: 1 ft = 0.3048 m → 1 ft² = 0.092903 m²).
    • When dealing with recipes, use volume conversions (cups, tablespoons, teaspoons) for accuracy.

    Why precise conversions matter

    Accurate unit conversion keeps projects on time and within spec—whether you’re sizing a home, shipping internationally, or following a global recipe. Bookmark this calculator so you always have a TDEE-style dashboard for measurements too.

    How It Works

    The Unit Converter runs entirely in your browser using JavaScript. Unlike other tools that send your data to a server, we process everything locally on your device. This guarantees 100% privacy and blazing fast speed.

    • No server interaction – data never leaves your device
    • Instant results since there is no network latency
    • Works offline once the page is loaded
    • Free to use with no usage limits

    How to Use

    1

    Pick a category

    Choose length, area, volume, weight, or temperature.

    2

    Enter your value

    Type a number, select the “from” and “to” units, or use a preset chip.

    3

    Review & copy

    See the result instantly along with popular target units and history.

    Example Usage

    The unit conversion calculator instantly converts across popular categories using precise factors.

    Input
    Category: Length From: 5 kilometers To: miles
    Output
    5 km ≈ 3.10686 miles Tip: For quick sanity checks, 1 mile ≈ 1.609 km.

    Frequently Asked Questions

    How accurate are these conversions?
    All conversions rely on standard SI definitions and widely accepted constants (e.g., 1 inch = 2.54 cm, 1 gallon = 3.785411784 liters). Temperature conversions use exact formulas.
    Can I convert between metric and imperial units?
    Yes! Each category includes both metric and imperial choices. Use the swap button to reverse directions quickly.
    Is my data saved?
    Recent conversions are stored locally (in your browser) so you can revisit them, but nothing is sent to our servers.

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    The Unit Converter is maintained by CodeItBro. We aim to provide the best free developer tools on the web. If you have feedback or suggestions, please visit our contact page.