Unit Converter Tools
Length, weight, temperature.
36 free unit converter tools — no sign-up, runs in your browser.
Reviewed by The Markvibe Team · Last updated 2026-06-28
The complete guide to unit converter
This page is the hub for everything unit converter on Markvibe. Length, weight, temperature. Every tool below runs in your browser — your files and text never leave your device. Use the cluster as a workflow: pick the tool that matches the job, then jump to a related one when the next step calls for it.
All Unit Converter Tools
Convert Celsius, Fahrenheit, Kelvin.
Convert meters, feet, inches.
Convert kg, lb, oz.
Convert mph, kmh, m/s.
Convert m², acres, hectares, ft², and more.
Convert liters, gallons, cups, m³.
Convert seconds, hours, weeks, years.
Convert bytes, KB, MB, GB, TB.
Convert Pa, psi, bar, atm, mmHg.
Convert J, kJ, kWh, kcal, BTU.
Convert watts, kW, hp.
Convert degrees, radians, gradians, turns.
Convert mpg, km/L, L/100km.
Convert Hz, kHz, MHz, GHz, rpm.
Convert newtons, lbf, dynes.
Convert N·m, lbf·ft, kgf·m.
Convert miles per hour to kilometres per hour.
Convert kilometres per hour to miles per hour.
Convert miles per hour to metres per second.
Convert kilometres per hour to metres per second.
Convert miles to kilometres.
Convert kilometres to miles.
Convert metres to feet.
Convert feet to metres.
Convert inches to centimetres.
Convert centimetres to inches.
Convert yards to metres.
Convert kilograms to pounds.
Convert pounds to kilograms.
Convert ounces to grams.
Convert grams to ounces.
Convert litres to US gallons.
Convert US gallons to litres.
Convert Celsius to Fahrenheit instantly.
Convert Fahrenheit to Celsius instantly.
Convert Kelvin to Celsius.
Explore related categories
Keep going — these categories pair well with unit converter workflows.