Unit Converter
Convert length, weight, temperature, volume, area, speed, and more instantly — bidirectional, private, and precise.
Common conversions
Result
— ft
Conversion formula: multiply by 3.28083989501 (m → ft)
About Unit Converter
What is the Unit Converter?
The Unit Converter is a professional, browser-based measurement calculator for converting length, weight (mass), temperature, volume, area, speed, time, energy, pressure, digital storage, and angle units. Values update instantly as you type — no Convert button — and both fields are bidirectional, so you can edit either side. All linear conversions use internationally recognized SI and customary factors (for example, the international foot of exactly 0.3048 m and the avoirdupois pound of exactly 0.45359237 kg).
Why use this tool?
Engineers, scientists, clinicians, logistics teams, athletes, cooks, and students regularly work across metric and imperial systems. A precise converter reduces transcription errors in drawings, lab notebooks, shipping labels, recipes, and training logs. Temperature uses the exact thermodynamic relationships (°C ↔ °F ↔ K ↔ °R), not approximate shortcuts.
How to use this tool:
1. Choose a category such as Length, Weight, or Temperature.
2. Select the From and To units from the dropdowns.
3. Type a value in either field — the other side updates immediately.
4. Adjust precision (0–12 decimal places) for engineering or everyday rounding.
5. Use Swap to reverse the units, Copy result for the clipboard, and browse Common or Popular conversions for one-click presets.
Supported categories: Length, Weight, Temperature, Volume, Area, Speed, Time, Energy, Pressure, Data, Angle. Dedicated SEO pages are also available for high-traffic pairs such as kg to lb, meters to feet, and Celsius to Fahrenheit.
Related tools: For body-mass index with metric/imperial inputs, try the BMI Calculator. For percent change and ratios, use the Percentage Calculator.
Frequently Asked Questions
Which unit categories are supported?
Length, Weight (mass), Temperature, Volume, Area, Speed, Time, Energy, Pressure, Data (storage), and Angle. Each category includes SI units and the most common US customary / imperial equivalents used by professionals.
Are the conversion factors exact?
Yes for defined legal/SI relationships. Examples: 1 inch = 2.54 cm exactly, 1 foot = 0.3048 m exactly, 1 pound = 0.45359237 kg exactly, 1 US gallon = 3.785411784 L exactly. Temperature uses exact formulas (°F = °C × 9/5 + 32; K = °C + 273.15). Data units distinguish decimal SI (kB, MB, GB) from binary IEC (KiB, MiB, GiB).
Can I type in either the From or To field?
Yes. Conversion is bidirectional and live. Edit the From value to update To, or edit To to update From. Use Swap to exchange the selected units and current values.
What does Precision control?
Precision sets how many decimal places are shown in the calculated result (0–12). Higher precision is useful for engineering and lab work; lower precision is better for everyday estimates. Extremely large or tiny magnitudes may display in scientific notation for readability.
Is my data sent to a server?
No. All unit conversions run entirely in your browser. Nothing you type is uploaded, which makes the tool suitable for private engineering figures and personal measurements.
Where can I find kg to lb, meters to feet, and similar pages?
Dedicated pages exist for popular pairs including KG to LB, LB to KG, Meters to Feet, Feet to Meters, CM to Inches, Inches to CM, and more. Each page includes the live converter, formula, examples, and FAQ.