FreeAIConvert

Free Instant Unit Converter Hub

41 free client-side converters

Free, instant unit converters for length, weight, temperature, speed, storage, area, volume, and time. All calculations run 100% client-side in your browser — no file uploads, no server calls, no registration required.

📏

Length

8 converters
Centimeters → Inches
cm → inch
Inches → Centimeters
inch → cm
Meters → Feet
meter → feet
Feet → Meters
feet → meter
Kilometers → Miles
km → mile
Miles → Kilometers
mile → km
Centimeters → Meters
cm → meter
Meters → Centimeters
meter → cm
⚖️

Weight

4 converters
Kilograms → Pounds
kg → pound
Pounds → Kilograms
pound → kg
Grams → Ounces
gram → ounce
Ounces → Grams
ounce → gram
🌡️

Temperature

4 converters
Celsius → Fahrenheit
celsius → fahrenheit
Fahrenheit → Celsius
fahrenheit → celsius
Celsius → Kelvin
celsius → kelvin
Kelvin → Celsius
kelvin → celsius
🚀

Speed

4 converters
km/h → mph
kmh → mph
mph → km/h
mph → kmh
m/s → km/h
mps → kmh
km/h → m/s
kmh → mps
💾

Digital Storage

5 converters
Bytes → Kilobytes
byte → kb
Kilobytes → Megabytes
kb → mb
Megabytes → Gigabytes
mb → gb
Gigabytes → Terabytes
gb → tb
Terabytes → Gigabytes
tb → gb
🗺️

Area

4 converters
Square Meters → Square Feet
sqm → sqft
Square Feet → Square Meters
sqft → sqm
Acres → Hectares
acre → hectare
Hectares → Acres
hectare → acre
🧪

Volume

4 converters
Liters → Gallons
liter → gallon
Gallons → Liters
gallon → liter
Milliliters → Liters
ml → liter
Liters → Milliliters
liter → ml
⏱️

Time

8 converters
Seconds → Minutes
second → minute
Minutes → Seconds
minute → second
Hours → Minutes
hour → minute
Minutes → Hours
minute → hour
Days → Hours
day → hour
Hours → Days
hour → day
Weeks → Days
week → day
Days → Weeks
day → week

Frequently Asked Questions

Are these online unit converters safe to use?

Yes, absolutely. All 41 of our unit converters run 100% locally in your web browser using JavaScript. No data is ever sent to or stored on our servers, ensuring complete privacy.

How do client-side converters differ from others?

Traditional converters send your input to a server, perform the calculation, and send it back. Client-side converters do the math directly on your device. This makes them instantly fast and works even on slow connections.

All 41 unit converters are free, instant, and run entirely in your browser.