Unit Converter
Convert length, weight, volume, temperature, area, and speed in your browser. Pick a category, enter a value — see all conversions instantly.
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How to Convert Units Online
ToolsPix Unit Converter supports six categories — length, weight, volume, temperature, area, and speed — covering dozens of individual units. All calculations run in your browser using exact mathematical constants, so results are accurate to the standard definitions used in science and engineering.
Why use ToolsPix Unit Converter?
- Completely free with no account, no app to install, and no file uploads.
- Covers the most common unit categories in a single tool.
- The all-conversions table shows every unit in the selected category at once.
- Temperature conversions use the correct offset formulas, not just multiplication.
- Results copy cleanly without thousand separators, ready for spreadsheets or code.
How to use the converter
Select a category using the tabs at the top. Choose your source unit from the left dropdown, enter a value, then select the target unit from the right dropdown — the result appears instantly. Use the ⇅ button to swap source and target units. The table below the converter shows all units in the current category converted from the value you entered.
FAQ
How accurate are the conversion results?
All conversions use exact IEEE mathematical constants, not rounded approximations. For example, one mile is defined as exactly 1609.344 metres and one pound as exactly 0.45359237 kilograms, matching the international definitions used in science and engineering.
Does the unit converter work without an internet connection?
Yes. Once the page has loaded, all calculations run entirely in your browser using JavaScript. There are no server requests during conversion, so the tool continues to work if you go offline.
How are temperature conversions handled?
Temperature uses offset formulas rather than simple ratios. For example, Celsius to Fahrenheit is (°C × 9/5) + 32, not a multiplication alone. The tool applies the correct offset formula for each scale including Celsius, Fahrenheit, Kelvin, and Rankine.
Why does the result sometimes show scientific notation?
Scientific notation appears automatically when a result is very large (10¹⁵ or more) or very small (less than 10⁻⁶). This keeps the display readable for extreme values such as converting nanometres to miles or teaspoons to cubic metres.
Can I copy the conversion result?
Yes. Click the copy button next to the result. The value is copied without thousand separators so it pastes cleanly into spreadsheets, databases, or other applications.