Tire Size Calculator
janey-moon Tools Contains ads
Tire size calculator: compare specs, speedometer error and plus size options
- Downloads
- 546+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Oct 31
- 2026 · v1.2.8
Screenshots
About Tire Size Calculator
▶ Compare two tire sizes at a glance. Enter both specs and see the difference in diameter, circumference, sidewall and ride height, with a to-scale overlay so the size change is obvious.
▶ Check your speedometer. See how a new tire shifts your real speed versus the reading, plus an odometer-error percentage — the numbers that matter after an upsize.
▶ Find plus sizes. Enter a target and get alternate sizes within a few percent of the original diameter, grouped by rim so you can plan a clean plus-one or plus-two.
▶ Decode the markings. Load-index and speed-rating tables turn the numbers on the sidewall into kg and km/h, with P, LT and XL explained.
▶ Save your vehicles and share a result card. Works offline, no account needed.
Results are for reference only. Fitment and clearance depend on your vehicle — always confirm with your owner's manual or a tire professional.
▶ Check your speedometer. See how a new tire shifts your real speed versus the reading, plus an odometer-error percentage — the numbers that matter after an upsize.
▶ Find plus sizes. Enter a target and get alternate sizes within a few percent of the original diameter, grouped by rim so you can plan a clean plus-one or plus-two.
▶ Decode the markings. Load-index and speed-rating tables turn the numbers on the sidewall into kg and km/h, with P, LT and XL explained.
▶ Save your vehicles and share a result card. Works offline, no account needed.
Results are for reference only. Fitment and clearance depend on your vehicle — always confirm with your owner's manual or a tire professional.
What’s new
Version 1.2.8 · Updated October 31, 2026
Tire Size Calculator has been rebuilt on a newer foundation. Compare, Suggest, Wheel, Reference and the sizes in My Garage all carry over, and where privacy choices apply in your region you can reopen them from the menu.
Alternatives to Tire Size Calculator
Looking for apps like Tire Size Calculator? Here are 6 similar Android apps on Google Play. All of them are free to download.
-
PD Meter: Pupillary Distance
-
Meteor Shower Calendar Tonight
-
TV Antenna Pointer & Towers
-
Speaker & Subwoofer Sound Test
-
Long Exposure Slow Shutter Cam
-
Roof Pitch Gauge: Angle & x:12
| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| Tire Size Calculator | – | Free | 500+ | Oct 31, 2026 | |
| PD Meter: Pupillary Distance | – | Free | 5,000+ | Oct 1, 2026 | Compare |
| Meteor Shower Calendar Tonight | – | Free | 1,000+ | Nov 2, 2026 | Compare |
| TV Antenna Pointer & Towers | – | Free | 5,000+ | Oct 8, 2026 | Compare |
| Speaker & Subwoofer Sound Test | – | Free | 100+ | Sep 25, 2026 | Compare |
| Long Exposure Slow Shutter Cam | – | Free | 100+ | Aug 16, 2026 | Compare |
| Roof Pitch Gauge: Angle & x:12 | – | Free | 100+ | Oct 17, 2026 | Compare |
Similar apps on Google Play
- PD Meter: Pupillary Distance
- Meteor Shower Calendar Tonight
- TV Antenna Pointer & Towers
- Speaker & Subwoofer Sound Test
- Long Exposure Slow Shutter Cam
- Roof Pitch Gauge: Angle & x:12
- Wildfire Smoke Map & AQI
- Grow Light Meter: PPFD PAR DLI
- Vocal Range Finder Voice Test
- Goniometer: Joint Angle & ROM
- Clear Sky Stargazing Forecast
- Colorblind Filter & Simulator
- Count: Photo Object Counter
- Sound Amplifier: Hearing Boost
- Solunar Times: Fishing Hunting
- Vertical Jump: Hang Time
- Peak Scope: Mountain ID
- Timestamp Camera Stamp
- E6B Flight Computer
- String Tension: Racquet Meter
- Nav Rules: COLREGS Quiz
- Crown Molding Angle Calc
- AR Theodolite: Angle & GPS
- Resistor Color Code Calc
- Fan Balance: Vibration
- Stair Calculator: Stringer
- Conduit Bend Calculator
- CNC Machinist Calculator
- RV Leveler & Camper Level
- Solar Panel Tilt & Aim Angle
- Friendship Bracelet Maker
- Frizz Forecast: Hair Weather
- Dog Walk Weather: Paw Safety
- Tree Height Meter & Clinometer
- Beep Test: Shuttle Run
- Tide Times & Tide Chart
- Tally Counter - Click & Count
- Sea & Water Temperature
- Morse Code Translator & Learn
- Lie Detector Prank Test Game
- Green Reader: Golf Slope
- Fire Danger Index: Wildfire
- Find My Phone: Clap & Ring
- Ear Trainer: Perfect Pitch
- Drum Tuner: Tune Drum Heads
- Chromatic Tuner: Guitar, Bass
- Pollen & Allergy Forecast
- Mold & Humidity Risk Meter
- AQI Air Quality Index Monitor
- Personal Color: Season Finder
- GIF Maker Studio: GIF Editor
- Blur & Mosaic Privacy Editor
- Snow Forecast: Powder Alerts
- Rain Alert: Storm Radar
- Golden Hour: Sun & Light Times
- Aurora Forecast & KP Index
- UV Index Sun Safety Forecast