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Skip to contentConvert metric, imperial and scientific units instantly in browser.
Recipes, engineering specs and travel all need unit conversion. Tentaco unit hub covers length, mass, temperature and data sizes with clear formulas — no ad-heavy converter sites.
Bookmark for homework, DIY and quick field calculations. Browse related Tentaco tools on this hub, open a studio mode when you need a fuller workspace, and keep files on your device whenever the tool runs locally.
Unit converter — length, weight, temperature
Convert metric and imperial units instantly in your browser. Free unit converter — no signup.
Percentage Calculator — percent change online
Work out percentages, increases, decreases and ratios. Tentaco Percentage Calculator: review input and get an instant result — free, no sign-up.
Aspect Ratio Calculator — resize proportion
Calculate dimensions that keep an aspect ratio. Tentaco Aspect Ratio Calculator: review input and get an instant result — free, no sign-up.
Number Base Converter — binary hex decimal
Convert numbers between binary, octal, decimal and hexadecimal. Tentaco Number Base Converter: review input and get an instant result — free, no sign-up.
LocalThis tool processes data locally in your browser. Tentaco does not receive your file contents for this mode.
Sufficient for everyday use — verify critical engineering separately.
Works after page load without network.
Common SI and imperial sets covered.