Batch conversion, CSV export, custom precision, favorites and private history—no signup.
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This workspace combines features often reserved for paid plans or registered users. Choose a measurement category, set your preferred precision, save frequently used unit pairs and keep a recent history without sending those values to an account.
Paste values separated by commas, spaces or new lines. The converter applies the same unit relationship to each valid number and displays a results table. Download the table as a CSV file for a spreadsheet, estimate or project record.
Calculations use the factors shown in the conversion reference table and retain full JavaScript numeric precision before display rounding. Temperature uses the standard Celsius, Fahrenheit and Kelvin relationships. For regulated, scientific or safety-critical work, verify the required standard and permitted tolerance.
Do I need an account? No. Every feature on this page works without registration.
Where are favorites and history stored? In this browser’s local storage on your device. Clearing browser data removes them.
Can I use negative values? Yes where mathematically meaningful. Kelvin values below absolute zero are flagged as invalid.
Can I export results? Yes. The batch converter creates a CSV file containing the input values, units and converted results.