Does it handle temperature correctly?

Yes. Celsius, Fahrenheit, and Kelvin all convert correctly using the standard formulas (with offsets, not just ratios). The formula is shown alongside the result so you can verify by hand.

What about non-SI imperial units?

US and UK imperial units are supported and labeled distinctly. A US gallon (3.785 L) is different from a UK gallon (4.546 L) — Toova does not silently use one when you meant the other.

Can I convert data sizes (KB, MB, GB)?

Yes. Both binary (KiB, MiB, GiB based on 1024) and decimal (KB, MB, GB based on 1000) variants are supported. The distinction matters for storage marketing claims and software that mixes the two.

Is the conversion exact?

For ratios between SI units, yes. For imperial-metric conversions, results are computed at high precision and rounded to a configurable number of significant figures.

Is anything sent to a server?

No. Conversion runs entirely in your browser.

Unit Converter — Length, Mass, Data, Speed

Unit Converter (length, mass, temperature, speed)

Private by design — runs entirely in your browser

Convert between units of length, weight, volume, temperature, and more — in your browser. Toova handles imperial and metric units, surface both the converted value and the formula, and runs entirely on your device.

Categories covered

Length (meters, feet, miles, kilometers, inches, light-years). Weight and mass (grams, pounds, ounces, tons). Volume (liters, gallons, fluid ounces, cubic meters). Temperature (Celsius, Fahrenheit, Kelvin). Area, speed, energy, pressure, and data sizes. Pick a category, pick the source and target unit, and Toova surfaces the conversion plus the formula used.

Why the formula matters

For many units, the conversion is just multiplication by a constant. For temperature, the formula has an offset (Fahrenheit = Celsius × 9/5 + 32). Showing the formula instead of just the result makes Toova useful for verifying calculations by hand, teaching, or implementing the same conversion in code without re-deriving the constants every time.

Local-only

Conversions run entirely in your browser. There is no API call, no rate limit, no outage. The page works offline after first load, which makes the tool a reliable fallback when other services are down. The Network tab will stay empty during use.

Frequently Asked Questions

Does it handle temperature correctly?: Yes. Celsius, Fahrenheit, and Kelvin all convert correctly using the standard formulas (with offsets, not just ratios). The formula is shown alongside the result so you can verify by hand.
What about non-SI imperial units?: US and UK imperial units are supported and labeled distinctly. A US gallon (3.785 L) is different from a UK gallon (4.546 L) — Toova does not silently use one when you meant the other.
Can I convert data sizes (KB, MB, GB)?: Yes. Both binary (KiB, MiB, GiB based on 1024) and decimal (KB, MB, GB based on 1000) variants are supported. The distinction matters for storage marketing claims and software that mixes the two.
Is the conversion exact?: For ratios between SI units, yes. For imperial-metric conversions, results are computed at high precision and rounded to a configurable number of significant figures.
Is anything sent to a server?: No. Conversion runs entirely in your browser.