bike tire sealant calculator

Below is our bike tire sealant calculator.

The sealant volumes in our tool are accurate and fall within the recommended ranges for preventative sealant use, particularly for standard setups.

• The calculator is excellent for Road, Gravel, and standard Cross-Country (XC) MTB.
• The calculator is safe and functional for the larger tires, but users who ride aggressively or whose tires are known to be porous might choose to add an extra 10-20ml beyond the calculator’s suggestion for sizes 2.6 and wider.

Use the calculator for quick, reliable measurements, and get back to riding!

How much tubeless sealant for 700c?

For a generic 700c tire, the amount depends entirely on the width, but you should generally aim for 30ml to 60ml (1–2 oz) per tire. If you are running skinny road tires (25mm-28mm), stick to the lower end (30ml), but if you are using wider cyclocross or commuter tires (up to 40mm), use the higher end (60ml) to ensure the entire casing is coated.

How much sealant per tire 29er?

Because 29-inch mountain bike tires have a large volume and surface area, you need 90ml to 120ml (3–4 oz) per tire. For narrower Cross Country (XC) tires (around 2.1″), 90ml is usually sufficient, but for wider Trail or Enduro tires (2.4″ and up), you should use the full 120ml to ensure instant sealing of punctures in rough terrain.

How much sealant per tire road bike?

Road bike tires have low volume but high pressure, typically requiring 30ml to 50ml (1–1.7 oz) per tire. While 30ml is technically enough to coat the inside of a standard 25mm or 28mm tire, using closer to 40-50ml provides a necessary buffer so the sealant doesn’t dry out too quickly due to the heat generated by road friction.

How much sealant for 32mm tires?

For 32mm tires, which sit between pure road and all-road sizing, the ideal amount is 40ml to 60ml (1.4–2 oz). This specific volume ensures you have enough liquid to seal punctures at lower pressures (50-70 psi) without adding the unnecessary rotational weight that you would need for a full gravel setup.

How often to add sealant to tubeless tires?

You should visually check your sealant levels every 2 to 6 months, though this varies significantly based on climate. In hot, dry areas or if the bike is stored in a warm garage, sealant can dry out in as little as 2 months; in cooler, humid climates, it can last up to 6 months before needing a top-up (usually about half the original dose).

How much sealant per tire gravel?

Gravel tires (typically 38mm to 50mm) face higher puncture risks and require 60ml to 90ml (2–3 oz) per tire. Because gravel riding often involves lower pressures and sharper debris, err on the side of 90ml if you are running tires wider than 42mm or riding in areas with abundant thorns to ensure you don’t run dry mid-ride.