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Found 197 calculators
Trip average speed
Calculates average speed from distance in kilometers and time in hours.
Trip time from distance and speed
Calculates trip time from distance in kilometers and average speed in km/h.
Trip distance from speed and time
Calculates trip distance from speed in km/h and time in hours.
Fuel consumption L/100 km
Calculates average fuel consumption in L/100 km from fuel used and distance.
Fuel range from tank and consumption
Estimates range in kilometers from fuel amount in liters and L/100 km consumption.
Trip fuel cost
Calculates trip fuel cost from distance, L/100 km consumption, and price per liter.
Cost per 100 km
Calculates fuel cost per 100 km from L/100 km consumption and price per liter.
Simplified CO2 emission from fuel
Simplified CO2 emissions calculator: the result depends on fuel used and the selected emission factor in kg/L.
Engine displacement calculator
Calculates engine displacement from bore, stroke and cylinder count.
Mean piston speed
Calculates mean piston speed from engine stroke and rotational speed.
Stroke from mean piston speed
Solves engine stroke from mean piston speed and rotational speed.
Engine compression ratio
Calculates geometric compression ratio from total cylinder volume and clearance volume.
Engine clearance volume
Solves clearance volume from cylinder swept volume and compression ratio.
BMEP from torque
Calculates brake mean effective pressure from torque and engine displacement for a four-stroke model.
Torque from BMEP
Solves torque from BMEP and engine displacement for a simplified four-stroke model.
Power from BMEP, displacement, and speed
Calculates power from BMEP, displacement, and rotational speed for a simplified four-stroke engine.
Air flow from displacement and volumetric efficiency
Estimates theoretical intake air volume flow from engine displacement, speed, and volumetric efficiency.
Engine volumetric efficiency
Solves volumetric efficiency from actual air flow, displacement, and rotational speed.
Fuel mass flow from power and BSFC
Calculates fuel mass flow from power and brake-specific fuel consumption.
BSFC from power and fuel flow
Solves brake-specific fuel consumption from power and fuel mass flow.
Wheel torque from engine torque
Calculates wheel torque from engine torque, total ratio, and drivetrain efficiency.
Engine torque from wheel torque
Solves required engine torque from wheel torque, total ratio, and drivetrain efficiency.
Tractive force from wheel torque
Calculates tire contact tractive force from wheel torque and rolling radius.
Tractive force from engine torque
Calculates tractive force from engine torque, total ratio, drivetrain efficiency, and rolling radius.
Vehicle speed from engine speed
Calculates vehicle speed from engine rotational speed, total ratio, and wheel rolling radius.
Engine speed from vehicle speed
Calculates engine rotational speed from vehicle speed, total ratio, and rolling radius.
Drivetrain total ratio
Calculates total drivetrain ratio from gear ratio and final drive ratio.
Wheel power from engine power
Calculates wheel power from engine power and drivetrain efficiency.
Drivetrain efficiency
Solves drivetrain efficiency from input and output power.
Acceleration from tractive force
Calculates vehicle acceleration from tractive force, resistance force, and vehicle mass.
Grade force
Calculates the force needed to overcome a grade from vehicle mass and slope angle.
Maximum grade angle from tractive force
Estimates maximum grade angle from available tractive force and vehicle mass.
Gear speed per 1000 rpm
Calculates km/h per 1000 engine rpm from wheel circumference and ratios.
Gear ratio from teeth
Calculates a gear pair ratio from the drive and driven tooth counts.
Gearbox output speed
Calculates output rotational speed from input speed and ratio.
Gearbox output torque
Calculates output torque from input torque, ratio, and efficiency.
Gearbox input torque
Solves required input torque from output torque, ratio, and efficiency.
Gearbox power loss
Calculates gearbox power loss from input power and efficiency.
Gearbox total ratio
Calculates total ratio from gear ratio and final drive ratio.
Vehicle speed in gear
Calculates vehicle speed from engine speed, total ratio, and wheel rolling radius.
Engine speed at vehicle speed
Calculates engine speed for a given vehicle speed, total ratio, and rolling radius.
RPM drop after gear shift
Estimates engine speed after a shift and the speed drop from the new and old gear ratios.
Gear ratio step
Calculates the percentage step between a new and old gear ratio.
Required ratio for target speed
Solves the required total ratio for a target vehicle speed, engine speed, and rolling radius.
Simple gearbox output torque
Calculates simplified gearbox output torque as engine torque times ratio and efficiency.
Clutch torque capacity
Calculates simplified clutch torque capacity from clamp force, friction coefficient, mean radius, and number of active friction interfaces.
Required clutch clamp force
Solves required clamp force for a target torque, friction coefficient, mean radius, and friction surface count.
Required clutch friction coefficient
Solves required friction coefficient for a target torque, clamp force, mean radius, and friction surface count.
Required number of active clutch friction interfaces
Solves the exact and minimum integer number of active friction interfaces required to transmit a target torque.
Mean clutch friction radius
Calculates effective clutch friction radius for the uniform wear or uniform pressure assumption.
Clutch torque from inner and outer radius
Calculates simplified clutch torque from ring radii for the uniform wear or uniform pressure model.
Clutch slip power
Calculates power dissipated during clutch slip from torque and angular speed difference.
Clutch slip energy
Calculates energy dissipated during slip from slip power and time.
Clutch slip time
Solves slip time from dissipated energy and slip power.
Clutch safety factor
Calculates safety factor from clutch torque capacity and engine torque.
Required clutch torque capacity
Solves required clutch torque capacity from engine torque and safety factor.
Average clutch friction-surface pressure
Calculates average friction-surface pressure from clamp force and friction ring area; it is not maximum pressure or a pressure distribution.
Clutch friction ring area
Calculates friction ring area from outer and inner radius.
Speed from skid marks
Estimates initial speed from skid-mark length, friction, final speed, and road grade.
Braking distance from speed and grade
Solves braking distance for locked wheels from initial speed, final speed, friction, and road grade.
Speed from multiple braking segments
Estimates initial speed from v0^2 = vf^2 + 2 * sum(a_i d_i) for segments with different friction and grades.
Braking force from braking torque
Calculates braking force at the wheel from braking torque and wheel radius.
Braking torque from braking force
Calculates braking torque from wheel braking force and wheel radius.
Braking deceleration from force and mass
Calculates theoretical braking deceleration from total braking force and vehicle mass.
Braking distance from speed and deceleration
Calculates braking distance for constant deceleration and initial speed.
Braking time from speed and deceleration
Calculates braking time for constant deceleration and initial speed.
Kinetic energy to dissipate during braking
Calculates vehicle kinetic energy that the brake system must dissipate.
Braking thermal power from energy and time
Calculates average thermal power dissipated during braking.
Brake friction force from normal force and friction coefficient
Calculates friction force from normal force and friction coefficient.
Brake friction torque from friction force and effective radius
Calculates brake friction torque from friction force and effective radius.
Front/rear braking force distribution
Splits total braking force between front and rear axles by a specified front share.
Brake thermal energy
Calculates energy to dissipate when braking from initial to final speed.
Tire overall diameter
Calculates tire overall diameter from width, aspect ratio, and rim diameter.
Rolling radius from tire diameter
Estimates rolling radius as half of the supplied tire diameter.
Wheel circumference from diameter
Calculates wheel circumference from the supplied tire diameter.
Wheel revolutions per kilometer
Calculates the number of wheel revolutions required to travel one kilometer.
Vehicle speed from wheel RPM
Calculates vehicle speed from wheel rotational speed and tire diameter.
Wheel RPM from vehicle speed
Calculates wheel rotational speed from vehicle speed and tire diameter.
Tire diameter difference
Compares a new tire diameter with a reference diameter in absolute and percentage terms.
Speedometer error from tire change
Estimates actual speed and indicated-speed error after tire diameter change.
Ride height change from tire diameter
Calculates ride height change as half of the diameter difference between new and reference tires.
Tire contact force from wheel torque
Calculates tangential tire contact force from wheel torque and rolling radius.
Wheel torque from tire force
Solves required wheel torque from tire contact force and rolling radius.
Wheel load from vehicle mass distribution
Calculates static load on one wheel from vehicle mass and the load share of the analyzed axle.
Tire circumference
Calculates circumference from a supplied diameter.
Speedometer error from tire circumference
Estimates percentage speedometer error after tire circumference change.
Spring deflection from force and rate
Calculates linear spring deflection from applied force and spring rate.
Spring force from deflection and rate
Calculates linear spring force from deflection and spring rate.
Wheel rate from spring rate
Calculates wheel rate from spring rate and motion ratio.
Spring rate from wheel rate
Solves required spring rate from wheel rate and motion ratio.
Suspension natural frequency
Calculates undamped natural frequency from sprung mass and wheel rate.
Wheel rate from natural frequency
Solves wheel rate from target natural frequency and sprung mass.
Suspension static sag
Calculates static sag from corner mass and wheel rate.
Required spring rate for static sag
Solves required spring rate for corner mass, target static sag, and motion ratio.
Suspension critical damping
Calculates linear critical damping coefficient from sprung mass and wheel rate.
Damping coefficient from damping ratio
Calculates actual linear damping coefficient from damping ratio, sprung mass, and wheel rate.
Damping ratio from damping coefficient
Solves damping ratio from actual damping coefficient, sprung mass, and wheel rate.
Longitudinal load transfer
Calculates longitudinal load transfer during braking or acceleration from mass, acceleration, center of gravity height, and wheelbase.
Turning radius from wheelbase and steer angle
Calculates turning radius from wheelbase and road wheel steer angle.
Road wheel angle from turning radius
Solves road wheel angle from turning radius and wheelbase.
Turning diameter from turning radius
Calculates turning diameter as twice the turning radius.
Ackermann inner angle
Solves the Ackermann inner angle from outer angle, wheelbase, and track width.
Ackermann outer angle
Solves the Ackermann outer angle from inner angle, wheelbase, and track width.
Ideal Ackermann angle difference
Calculates the difference between inner and outer Ackermann angles.
Steering ratio
Calculates steering ratio from steering wheel angle and road wheel angle.
Road wheel angle from steering wheel angle
Calculates road wheel angle from steering wheel angle and steering ratio.
Steering wheel angle required
Solves the steering wheel angle required for a target road wheel angle and steering ratio.
Vehicle arc length
Calculates arc length from radius and sweep angle.
Lateral acceleration from steer angle
Calculates lateral acceleration from road wheel steer angle, wheelbase, and speed.
Minimum turning radius
Calculates minimum turning radius from maximum road wheel steer angle and wheelbase.
Vehicle acceleration from net force
Calculates vehicle acceleration from net force and vehicle mass.
Net force for vehicle acceleration
Solves the net force needed to achieve a target vehicle acceleration.
Vehicle rolling resistance
Calculates rolling resistance from vehicle mass and rolling resistance coefficient.
Vehicle aerodynamic drag
Calculates aerodynamic drag from speed, Cd, frontal area, and air density.
Aerodynamic drag power
Calculates the power needed to overcome aerodynamic drag at a given speed.
Total vehicle road load
Sums rolling resistance, aerodynamic drag, and grade resistance into total road load.
Wheel power for constant speed
Calculates wheel power needed to hold constant speed for a known total road load.
Lateral acceleration in a corner
Calculates lateral acceleration in a corner from speed and radius.
Corner radius from lateral acceleration
Solves corner radius from speed and lateral acceleration.
Vehicle lateral force
Calculates lateral force on the vehicle from mass and lateral acceleration.
Required friction for cornering
Estimates the minimum friction coefficient required for a given lateral acceleration.
Vehicle acceleration distance
Calculates acceleration distance from initial speed, final speed, and constant acceleration.
Empirical quarter-mile estimate
Estimates quarter-mile ET and trap speed from vehicle mass and power using common W_lb/P_hp formulas.
Power-to-mass ratio
Converts vehicle power and mass into hp/t, kW/t, and kg/kW.
Fuel consumption from volume and distance
Calculates average fuel consumption as fuel volume divided by distance.
Fuel volume from consumption and distance
Solves fuel volume used from distance and average fuel consumption.
Range from fuel volume and consumption
Estimates range from available fuel volume and average fuel consumption.
Trip fuel cost
Calculates trip fuel cost from distance, consumption, and fuel price per m3.
Fuel cost per 100 km
Calculates fuel cost per 100 km from average consumption and fuel price.
CO2 from fuel volume
Calculates CO2 mass from fuel volume and an emission factor in kg/m3.
CO2 per distance
Calculates CO2 emissions per unit distance and presents the result in the natural g/km unit.
Fuel mass flow from power and BSFC
Calculates fuel mass flow from power and brake-specific fuel consumption.
Fuel volume flow from power, BSFC and density
Calculates fuel volume flow from power, BSFC, and fuel density.
Average speed from distance and time
Calculates average speed from distance and travel time.
Travel time from distance and average speed
Calculates travel time from distance and average speed.
Monthly fuel cost
Calculates monthly fuel cost from monthly distance, consumption, and fuel price per m3.
EV energy consumption
Calculates auxiliary EV energy consumption in kWh/100 km.
EV range
Estimates EV range from usable battery energy and kWh/km consumption.
Fuel range
Estimates range from fuel volume in liters and L/100 km consumption.
Trip cost
Calculates trip cost from distance, consumption per 100 km, and unit price.
Heat power from coolant flow
Calculates cooling heat power from mass flow, specific heat, and temperature difference.
Required coolant flow
Solves required coolant mass flow for a target heat power and temperature difference.
Coolant temperature difference
Calculates coolant temperature difference from heat power, flow, and specific heat.
Heat energy absorbed by coolant
Calculates heat energy absorbed by coolant from mass, specific heat, and temperature difference.
Coolant heating time
Calculates coolant heating time from mass, specific heat, temperature difference, and heat power.
Heater power from air flow
Calculates heater power from air mass flow, specific heat, and temperature difference.
Required heater air flow
Solves required air mass flow for a target heater power.
Radiator air-side heat power
Calculates heat power rejected to air by the radiator from air flow and temperature difference.
Coolant mass from volume and density
Calculates coolant mass from volume and density.
Coolant concentrate and water volumes
Calculates concentrate and water volumes for a target mixture volume and concentrate ratio.
Mixed temperature of two fluids
Calculates mixed temperature of two fluids from masses, specific heats, and initial temperatures.
Temperature drop at constant cooling power
Calculates simplified temperature drop over time at constant cooling power.
Load current from power and voltage
Calculates load current from power and system voltage.
Load power from voltage and current
Calculates load power from voltage and current.
Battery runtime from capacity and current
Estimates load runtime from battery capacity and load current.
Battery used capacity
Calculates battery charge used from current and time.
Battery energy from voltage and capacity
Calculates battery energy from voltage and capacity expressed as electric charge.
Required alternator current
Sums load current and battery charging current as required alternator current.
Automotive wire voltage drop
Calculates wire voltage drop from current, loop length, cross-section, and resistivity.
Automotive wire power loss
Calculates wire power loss from current and wire resistance.
Automotive required wire cross-section
Solves minimum wire cross-section for an allowed voltage drop.
Automotive wire resistance
Calculates wire resistance from loop length, cross-section, and material resistivity.
Fuse current with margin
Calculates fuse current from operating current and a safety margin.
Battery runtime from load power
Calculates runtime from battery energy and load power.
EV AC charging time
Estimates AC charging time from energy to charge and charging power.
Accessory battery runtime
Calculates accessory runtime from battery energy in Wh and load power.
Required alternator power
Calculates power from system voltage and current.
Cylinder compression measurement deviation
Compares two compression measurement results and returns their relative difference; it does not determine the cause of the difference.
Battery voltage drop under load
Calculates the difference between open-circuit and loaded voltage without automatically assessing battery condition.
Alternator charging voltage deviation
Compares measured charging voltage with a provided reference voltage without assessing the cause of the deviation.
Ideal runtime under parasitic drain
Estimates ideal runtime from battery capacity and drain current without accounting for operating conditions.
Combined STFT and LTFT fuel trim
Adds short-term and long-term fuel trim; the result is not interpreted as a specific fault.
Wheel speed deviation
Compares measured speed with a reference speed and returns the absolute percentage deviation.
Sensor signal as percent of range
Converts a signal relative to the provided minimum and maximum; out-of-range values are allowed for erroneous-signal analysis.
Coolant warmup rate
Calculates average coolant temperature change rate in K/min from two temperatures and elapsed time.
Oil change interval remaining
Calculates remaining distance to an oil change from the interval and distance since the last change.
Service cost from parts and labor
Calculates total service cost from parts cost, labor hours, and hourly rate.
Tire wear difference
Calculates tread depth difference between two tires or measurements.
Brake pad wear rate
Calculates brake pad wear rate as millimeters per kilometer.
Coolant mixture ratio
Calculates concentrate and water volume from total volume and concentrate percentage.
Washer fluid dilution
Calculates concentrate and water volume for a target washer fluid concentration.
Maintenance cost per km
Calculates maintenance cost per kilometer from total maintenance cost and distance.
Annual vehicle cost
Sums annual fuel, insurance, maintenance, tax, and other costs.
Total vehicle cost per km
Calculates total vehicle cost per kilometer as an auxiliary ownership metric.
Bolt torque from clamp force
Estimates tightening torque from clamp force, bolt diameter, and nut factor K.
Bolt clamp force from torque
Estimates bolt clamp force from tightening torque, diameter, and nut factor K.
Bolt elongation
Calculates elastic bolt elongation from force, length, tensile area, and Young's modulus.
Bolt stress from force and area
Calculates bolt stress as force divided by tensile area.
Fluid dilution ratio
Calculates the component volume share in total mixture volume.
Weighted oil mixture value
Calculates a simplified volume-weighted average for two values, such as viscosity grade numbers.
Concentrate mixture volume
Calculates concentrate and water volume from total mixture volume and concentrate ratio.
Tire pressure temperature correction
Estimates tire pressure after a temperature change using a simplified ideal gas relation.
Tire pressure change from temperature
Calculates final pressure and pressure difference after a temperature change.
Fluid top-up volume
Calculates top-up volume from initial and target fluid volume.
Service cost
Calculates service cost from parts cost, labor rate per second, and labor time.
Remaining service interval
Calculates remaining distance to service from interval distance and distance since last service.
Power from torque
Calculates power from torque and rotational speed.