Unit Converter
Most conversions are linear: convert input to a base unit, then convert the base unit to the target. Free online calculator with instant results.
Result
1 m = 100 cm
Method
How this calculator works
Most conversions are linear: convert input to a base unit, then convert the base unit to the target. Temperatures use scale-specific formulas.
# Linear (length, weight, area, volume, speed, time, data)
result = (value × fromFactor) / toFactor
# Temperature (formulas)
°C → °F = °C × 9/5 + 32
°F → °C = (°F − 32) × 5/9
°C → K = °C + 273.15- Pick the category that matches the unit you have.
- Choose the source unit and type the value you want to convert.
- Choose the target unit — the result updates instantly, two-way.
- Use the swap button to flip the direction without retyping.
- Tap a quick-conversion chip below the result for the most common pairs.
Examples
Worked examples
Real numbers, end-to-end results.
1 mile
= 1.609 km · 5,280 ft · 1,609 m
100 °F
= 37.78 °C · 310.93 K
1 acre
= 4,046.86 m² · 43,560 ft²
1 GB
= 1,024 MB · 1,048,576 KB · 8,589,934,592 bits
Use cases
When to use it
- Convert recipes between metric and imperial.
- Translate measurements for international shipping or travel.
- Estimate file storage in different units.
- Compare car specifications across regions.
- Convert lab measurements for science homework or work.
FAQ
Frequently asked questions
Which unit categories does the converter support?
Why are temperature conversions different from the others?
Are the conversion factors accurate?
Can I link to a specific conversion?
Does the converter work offline?
Methodology, assumptions & limitations
How we calculate: This calculator uses standard, peer-reviewed mathematical formulas implemented in TypeScript. All calculations run entirely in your browser — no data is sent to any server.
Assumptions: Unless stated otherwise, calculations assume constant rates over the specified period, no taxes or fees beyond those explicitly input, and standard compounding conventions for the formula type.
Limitations: Results are estimates for planning purposes. Real-world outcomes may differ due to variable rates, regulatory changes, taxes, fees, inflation, or other factors not modeled. This tool does not constitute professional advice.
When NOT to use this: Do not rely solely on this calculator for critical decisions where exact precision is required beyond the decimal places shown.
Feedback: Found an error or have a suggestion? Contact us — we review and correct reported issues within 48 hours.
Deep Dive Guide
Unit Converter Guide
A comprehensive, highly technical guide to unit conversion, covering mathematical principles, floating-point precision, graph theory algorithms, and real-world applications.
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