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Stoppsträckekalkylator

Beräkna den totala stoppsträckan, inklusive reaktionssträcka och bromssträcka.

Introduktion

Stopping Distance Calculator — Calculate total stopping distance including reaction and braking distance. Enter Speed, Speed unit, Friction coefficient, Reaction time (s) to get an instant, accurate result.

Formel

Braking distance (m) = speed(m/s)² / (2 × friction coefficient × g). Reaction distance (m) = speed(m/s) × reaction time (s). Total stopping distance = braking distance + reaction distance.

Steg för steg

  1. Enter the Speed.
  2. Enter the Speed unit.
  3. Enter the Friction coefficient.
  4. Enter the Reaction time (s).
  5. Click Calculate to see your result instantly.

Verkligt exempel

Example: With Speed = 60, Speed unit = mph, Friction coefficient = 0.7, Reaction time (s) = 1.5, the Stopping Distance Calculator gives Braking Distance M: 52.3839, Reaction Distance M: 40.2336, Total Distance M: 92.6175.

Vanliga Frågor

What friction coefficient should I use?
Around 0.7 is typical for a tire on dry asphalt; wet roads can drop it to roughly 0.4-0.5, and icy conditions much lower still.
Why include reaction time in stopping distance?
The car keeps traveling at full speed during the time it takes the driver to perceive a hazard and hit the brakes — a typical reaction time of 1.5 seconds can add significant distance before braking even begins.
What inputs does the Stopping Distance Calculator need?
You'll need to provide: Speed, Speed unit, Friction coefficient, Reaction time (s). All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.
How accurate is the Stopping Distance Calculator?
The Stopping Distance Calculator applies the formula exactly as calculated — Braking distance (m) = speed(m/s)² / (2 × friction coefficient × g). Reaction distance (m) = speed(m/s) × reaction time (s). Total stopping distance = braking distance + reaction distance. — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.
Is the Stopping Distance Calculator free to use?
Yes, the Stopping Distance Calculator is completely free, requires no signup, and runs instantly in your browser.

Om Stoppsträckekalkylator

The Stopping Distance Calculator uses a real, verifiable formula — Braking distance (m) = speed(m/s)² / (2 × friction coefficient × g). Reaction distance (m) = speed(m/s) × reaction time (s). Total stopping distance = braking distance + reaction distance. — so results are accurate every time, not an approximation.