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Free Online Speed Converter

Convert metres per second, kilometres per hour, mph and knots.

Your input stays on this device. Processing is bounded; regex runs in a worker with a two-second timeout.

Result



How to use Speed Converter
Convert metres per second, kilometres per hour, mph and knots. The selected units use explicit SI reference factors. Decimal and binary prefixes are distinct. Results use IEEE 754 floating-point arithmetic; round only at the precision your task requires.
  1. Set Value.
  2. Set From unit.
  3. Set To unit.
  4. Run the tool, review the result and its stated limitations, then copy or download if needed.
Example & practical use
Convert metres per second, kilometres per hour, mph and knots. The example below demonstrates Value; From unit; To unit.
Example input:
{
  "value": 36,
  "from": "km/h",
  "to": "m/s"
}
Expected result (relevant fields):
{
  "value": 10
}
Features & result limitations
The selected units use explicit SI reference factors. Decimal and binary prefixes are distinct. Results use IEEE 754 floating-point arithmetic; round only at the precision your task requires.
Frequently asked questions
What inputs does Speed Converter accept?
Value; From unit; To unit
How should I interpret the Speed Converter result?
The selected units use explicit SI reference factors. Decimal and binary prefixes are distinct. Results use IEEE 754 floating-point arithmetic; round only at the precision your task requires.
Where does Speed Converter process my data?
Inputs are processed locally in your browser. Submitted text is not sent to external services. A successful-run event increments an aggregate tool counter without your input.