Unit Converter - Length, Weight, Temperature & Volume
Convert between common length, weight, temperature, and volume units instantly. Enter a value, pick your units, and get an accurate conversion with support for metric and imperial measurements.
Convert Units
Length, weight, temperature, and volume conversions.
Result
Instant conversion output.
Feet (ft)
3.28084
1 Meters
Methodology and limitations
Last reviewed:
Methodology
Converts through category base units using standard multipliers; temperature uses formula-based Celsius conversion.
Limitations
Rounding may differ slightly from specialized scientific tools.
How Unit Conversion Works
Convert between common length, weight, temperature, and volume units instantly. Enter a value, pick your units, and get an accurate conversion with support for metric and imperial measurements.
Method used
The calculator converts values through a category base unit using standard multipliers for length, weight, volume, and temperature. Temperature uses formula-based Celsius conversion rather than a simple multiplier.
°F = (°C × 9/5) + 32; target value = source value × (source-to-base ratio)
Practical example
Converting 5 miles to kilometers: 5 × 1.60934 ≈ 8.05 km. Converting 100 °F to Celsius: (100 − 32) × 5/9 ≈ 37.8 °C.
- Category: length, weight, temperature, or volume
- Source value and units
- Target units (swap supported)
The result shows the converted value with source and target unit labels.
Assumptions
- Standard international conversion factors are used.
- Temperature conversions use exact formulas, not rounded multipliers.
- Results display with practical decimal precision.
What this includes
- Length, weight, temperature, and volume conversions with unit swap.
What this excludes
- Currency conversion, cooking volume vs weight density, scientific significant figures, and specialized engineering unit systems.
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Frequently Asked Questions
How do I convert between metric and imperial units?
Select a category such as length or weight, enter your value, choose the source unit (for example meters or pounds), and pick the target unit. The converter routes through a standard base unit so chained conversions stay consistent. Swap units when you need the inverse without retyping the number.
Does the temperature converter handle Celsius and Fahrenheit?
Yes. Temperature supports Celsius, Fahrenheit, and Kelvin using the standard offset formulas rather than a single multiplier. That is why 32°F converts to 0°C and 273.15 K, not a proportional scale. Double-check symbols when reading recipes or lab notes so you do not apply a length-style factor by mistake.
Which length units are supported?
Common length units include millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles. Conversions use exact standard definitions such as 1 inch equals 25.4 millimeters. Pick the unit pair your blueprint, map, or textbook uses so you avoid mixing survey feet with international feet in specialized work.
Can I swap the from and to units?
Yes. Use the swap control to reverse source and target units while keeping the numeric value, which is ideal for checking inverse conversions quickly. After swapping, confirm the displayed result still matches the direction you intend to report. Category stays the same—you cannot swap a length into a mass unit.
How precise are the conversion results?
Results display up to six decimal places for typical magnitudes, with scientific notation for very large or very small numbers. Underlying factors use standard base-unit multipliers for everyday accuracy. Specialized metrology or legal-for-trade work may require certified instruments and rounded rules beyond this general converter.