All Calculators

100+ free automotive tools organized by category. Tap a category to browse all tools, or jump straight to one you need.

Financial

Car loans, leasing, depreciation, and ownership cost calculators

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Car Loan Calculator

Monthly payment from price, APR, and term

Car Payment Calculator

Back-calculate vehicle price from your budget

Car Lease Calculator

Monthly lease payment from cap cost and money factor

Car Affordability Calculator

Max vehicle price based on income and debts

Car Depreciation Calculator· Apr 27

Lease vs Buy Calculator· May 1

Car Sales Tax Calculator· May 11

Auto Loan Refinance Calculator· May 15

Trade-In Value Estimator· May 17

Gap Insurance Calculator· May 20

Car Insurance Cost Estimator· May 25

Auto Loan Interest Calculator· May 29

Used Car Value Calculator· May 31

Mileage Reimbursement Calculator· Jun 3

Car Loan Early Payoff Calculator· Jun 5

Car Registration Fee Calculator· Jun 8

Total Cost of Ownership Calculator· Jun 10

New vs Used Car Calculator· Jun 17

Car Shipping Cost Calculator· Aug 7

Speeding Ticket Cost Calculator· Sep 7

DUI Cost Calculator· Sep 9

EV & Electric

Electric vehicle costs, charging, range, and savings calculators

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EV Charging Cost Calculator· May 13

EV vs Gas Total Cost Comparison· May 27

EV Tax Credit Calculator· Jun 19

EV Range Calculator· Jun 21

EV Charging Time Calculator· Jun 24

Home EV Charging Cost Calculator· Jul 19

EV Battery Replacement Cost Estimator· Aug 2

EV Road Trip Planner· Aug 3

EV Lease vs Buy Calculator· Aug 17

EV Electricity vs Gas Cost Per Mile· Aug 31

EV Battery Degradation Estimator· Sep 2

Gas vs Hybrid Savings Calculator· Sep 4

EV Winter Range Calculator· Sep 11

EV Savings Over Ownership Period· Oct 2

Electric Motor HP/kW Converter· Oct 4

EV Tire Calculator· Oct 5

EV Charging Station ROI Calculator· Oct 7

Tire & Wheel

Tire sizing, fitment, offset, and wheel calculators

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Tire Size Calculator

Decode tire size to diameter, sidewall, and circumference

Tire Size Comparison

Compare two tire sizes with visual scale diagram

Tire Pressure Calculator· May 8

Wheel Offset Calculator· May 10

Speedometer Correction Calculator· Jun 7

Bolt Pattern Calculator· Jun 12

Tire Age Calculator· Jun 14

Plus Size Tire Calculator· Jun 15

Tire Tread Depth Calculator· Jul 24

Winter Tire Size Calculator· Jul 26

Rim Width to Tire Size Calculator· Jul 27

Wheel Spacer Calculator· Jul 31

Tire Rotation Guide· Aug 5

Metric to Inch Tire Converter· Aug 9

Wheel Backspacing Calculator· Aug 10

Vehicle Tire Finder· Aug 12

Tire Height Calculator· Aug 26

Tire Width Calculator· Aug 28

Tire Load Index Calculator· Aug 30

VIN Tire Decoder· Sep 18

Tire Upgrade Analyzer· Sep 20

Tire Cost Per Mile Calculator· Sep 21

Performance Tire Calculator· Sep 23

Off-Road Tire Calculator· Sep 25

Engine & Performance

Horsepower, torque, 0-60, compression ratio, and performance calculators

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Horsepower Calculator

HP from torque and RPM using the 5252 formula

Quarter Mile Calculator· May 4

0-60 MPH Time Estimator· May 6

Torque Calculator· May 18

Compression Ratio Calculator· Jun 28

HP to Torque Converter· Jun 29

Top Speed Calculator· Jul 1

Power-to-Weight Ratio Calculator· Jul 10

Engine CC to HP Estimator· Jul 22

Turbo Boost Calculator· Aug 23

Air/Fuel Ratio Calculator· Aug 24

Fuel Injector Size Calculator· Sep 14

Engine Build Cost Estimator· Oct 12

Exhaust Pipe Diameter Calculator· Oct 14

Fuel & Efficiency

MPG, fuel cost, trip planning, and efficiency calculators

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MPG Calculator

Calculate MPG from odometer and fill-up volume

Fuel Cost Calculator

Fuel spend per mile, month, and year

Cost Per Mile Calculator· May 24

Liters Per 100km to MPG Converter· Jul 3

Commute Cost Calculator· Jul 6

Gas Trip Cost Calculator· Jul 12

Diesel vs Gas Cost Comparison· Jul 15

Annual Fuel Cost Calculator· Jul 17

Road Trip Fuel Planner· Jul 20

Fuel Tank Range Calculator· Jul 29

E85 vs Gasoline Cost Calculator· Sep 13

Two-Car Fuel Cost Comparison· Sep 16

Drivetrain

Gear ratio, RPM, axle ratio, and drivetrain calculators

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Gear Ratio Calculator· Apr 29

RPM at Speed Calculator· Jul 5

Axle Ratio Calculator· Jul 8

Final Drive Ratio Calculator· Aug 16

AWD vs 4WD Comparison· Aug 19

Differential Gear Ratio Calculator· Sep 27

Optimal Gear Ratio for Towing· Sep 28

Gear Speed Chart Generator· Sep 30

Towing & Payload

Towing capacity, payload, tongue weight, and trailer calculators

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Towing Capacity Calculator

Available tow capacity after passengers and cargo

Payload Calculator· May 22

Tongue Weight Calculator· Jun 22

GVWR Calculator· Jul 13

Truck Bed Payload Calculator· Aug 14

Camper/RV Weight Calculator· Aug 21

Hitch Ball Size Guide· Sep 6

Trailer Load Balance Calculator· Oct 9

Truck Tire Calculator· Oct 11

Braking & Safety

Stopping distance, braking performance, and safety calculators

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Stopping Distance Calculator· May 3

Braking Distance Calculator· Jun 1

Brake Pad Life Estimator· Jun 26