G-Force Calculator
Work out g-force from a 0-60 time, any change in speed, a braking distance or a corner, with the acceleration in m/s² and ft/s².
Press Calculate to print your slip
Estimate only. Real numbers vary with the dyno, the track and the day.
Got a 0-60 time? Get the full time slip
On this page
Four ways to measure g
g-force tells you how hard something is accelerating compared with gravity. Work it out from a 0-60 time, from any change in speed, from a braking distance, or from how fast a car goes round a corner.
What you need
- For acceleration
- A 0-60 mph or 0-100 km/h time, or any start speed, end speed and time.
- For braking
- The speed when braking starts and the distance to a full stop.
- For cornering
- The speed through the turn and the turn radius.
What you get
- Average g-force, plus the acceleration in m/s² and ft/s²
- A class: from everyday driving to race car territory
- Distance covered, time to stop, or the speed for 1 g on a turn
- The other benchmark: 0-100 km/h from 0-60, or the reverse
What g-force means
One g is the acceleration of gravity: 9.81 metres per second, every second, or 32.2 ft/s². When a car accelerates at 1 g, the seat pushes on you with a force equal to your own body weight. Half a g is half your weight, and so on.
Longitudinal g
Forward and back: acceleration pushes you into the seat, braking pushes you into the belt.
Lateral g
Side to side, in corners. Limited mostly by tire grip, and by downforce on race cars.
Vertical g
Up and down: the force you feel over crests and dips, and on roller coasters.
Average vs peak
This calculator gives the average over the run. The launch or the hardest braking moment briefly peaks higher.
For how many g roller coasters, F1 cars and fighter jets pull, how much the human body can take and the highest g anyone has survived, read our guide to what g-force is.
The formulas
Any speed change
g = (v₂ − v₁) ÷ t ÷ 9.81
From a 0-60 mph time
g = 2.735 ÷ t
Braking
g = v² ÷ (2 × d) ÷ 9.81
Cornering
g = v² ÷ r ÷ 9.81
- v, v₁, v₂
- Speeds in metres per second. 60 mph is 26.82 m/s; 100 km/h is 27.78 m/s.
- t
- Time in seconds.
- d and r
- Stopping distance and turn radius, in metres.
- 9.81
- Standard gravity in m/s², which turns acceleration into g.
Worked example: 0-60 mph in 5.0 seconds is 26.82 ÷ 5.0 = 5.36 m/s², and 5.36 ÷ 9.81 = 0.55 g.
How many g's things pull
Rough figures to put your result in context. Cars vary with tires, surface and conditions.
| Situation | About | Direction | Notes |
|---|---|---|---|
| Family car, 0-60 mph8 to 10 seconds | 0.3 g | Forward | Everyday merging |
| Sports car, 0-60 mph4 to 5 seconds | 0.55 to 0.7 g | Forward | Clearly pushed back |
| Quickest EVs and hypercarsunder 2.7 seconds | 1 g or more | Forward | AWD and launch control |
| Emergency stop, road tires60-0 mph in about 120 ft | 1.0 g | Backward | Modern cars with ABS |
| Road car on a skidpadsteady-state cornering | 0.8 to 1.0 g | Sideways | Grip limited |
| Top Fuel dragster launch0-60 mph in under 0.5 seconds | 4 g average, 5.5 g or more to 60 | Forward | Top Fuel 0-60 guide |
| Formula 1 heavy brakinge.g. Bahrain Turn 1, 313 to 66 km/h | 4 to 6 g | Backward | F1 0-60 guide |
| Formula 1 fast cornerssustained, with downforce | 4 to 5 g | Sideways | Aero adds grip with speed |
0-60 time to g-force chart
Every 0-60 mph time maps to one average g-force. Sixty mph is 26.82 m/s, so divide that by the time to get the average acceleration, then divide by 9.81 to turn it into g. In one step: g = 2.735 ÷ 0-60 time in seconds. The handy landmark is 2.7 seconds, which works out to almost exactly 1 g.
| 0-60 mph time | Average g | m/s² | Pace class |
|---|---|---|---|
| 2.0 s | 1.37 g | 13.41 | Hypercar |
| 2.5 s | 1.09 g | 10.73 | Hypercar |
| 3.0 s | 0.91 g | 8.94 | Supercar |
| 3.5 s | 0.78 g | 7.66 | Supercar |
| 4.0 s | 0.68 g | 6.71 | Sports car |
| 4.5 s | 0.61 g | 5.96 | Sports car |
| 5.0 s | 0.55 g | 5.36 | Quick daily driver |
| 6.0 s | 0.46 g | 4.47 | Quick daily driver |
| 7.0 s | 0.39 g | 3.83 | Everyday car |
| 8.0 s | 0.34 g | 3.35 | Everyday car |
| 9.0 s | 0.30 g | 2.98 | Relaxed |
| 10.0 s | 0.27 g | 2.68 | Relaxed |
Averages over the whole run from a standstill. The peak at the launch is higher. Pace classes match the time slip on the 0-60 calculator; see what counts as a good 0-60 time for real cars in each class.
How to use it
Pick a method
0-60 time, a speed change, a braking distance or a corner.
Choose units
mph and feet, or km/h and metres. In metric the 0-60 box becomes 0-100 km/h.
Enter the numbers
Use measured figures where you can: a GPS app or a published test.
Read the slip
Press Calculate for the g-force, the acceleration and a class for context.
Example calculations
| Input | Method | g-force | m/s² |
|---|---|---|---|
| 0-60 mph in 8.0 sTypical family car | 0-60 time | 0.34 g | 3.35 |
| 0-60 mph in 5.0 sSports car | 0-60 time | 0.55 g | 5.36 |
| 0-60 mph in 2.3 sQuickest EVs | 0-60 time | 1.19 g | 11.66 |
| 60-0 mph in 120 ftGood road-car stop | Braking | 1.00 g | 9.83 |
| 60-0 mph in 100 ftSticky tires, big brakes | Braking | 1.20 g | 11.80 |
| 60 mph on a 300 ft radiusFast sweeping bend | Cornering | 0.80 g | 7.87 |
Sources and method
One g is standard gravity, 9.80665 m/s². Average g comes from the change in speed over time, from speed and distance for braking, and from speed squared over radius for cornering. F1 and Top Fuel benchmarks come from Formula1.com, Brembo and the NHRA, cited in our guides.
- NIST: standard acceleration of gravity
- Formula 1 g-forces and their sources
- Top Fuel g-forces and their sources
Updated October 2026. Built and checked by the 0-60calc Team. Found a mistake? Tell us and we will check it against the source.
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Questions people ask
What is 1 g?
One g is the acceleration of gravity at the Earth's surface: 9.81 m/s², or 32.2 ft/s². Accelerating at 1 g feels like your own body weight pushing you back into the seat.
How do I convert a 0-60 time to g-force?
Divide 60 mph (26.82 m/s) by the time to get the average acceleration in m/s², then divide by 9.81. In one step, g = 2.735 ÷ the 0-60 time in seconds, so a 4.0-second car averages 0.68 g and a 2.7-second car about 1 g.
How many g does a fast car pull?
Averaged over 0-60 mph, a typical family car pulls about 0.3 g, a sports car around 0.55 to 0.7 g, and the quickest EVs and hypercars close to or just over 1 g. Peak g at the launch is higher than the average.
Can a road car accelerate at more than 1 g?
Yes. A 0-60 mph time under about 2.7 seconds averages more than 1 g, which the quickest electric cars and hypercars manage with all-wheel drive, sticky tires and launch control.
Why is the average g lower than the peak?
Acceleration fades as speed rises, because power is limited and drag grows. The calculator reports the average over the run, which is always below the brief peak at the launch.
How is cornering g measured?
With an accelerometer, a phone app or a skidpad test, where a car circles a painted ring at the fastest steady speed it can hold. The calculator works it out from speed and turn radius instead.
How much g can a person handle?
Brief forces of a few g are routine on roller coasters and in performance cars. Sustained high g is different: trained pilots in g-suits tolerate around 9 g, while most people start to feel light-headed well below that. Our guide to what g-force is covers human limits and records.