How much sealant do I put in each tyre?

Road (23-28mm): 30-40ml. Gravel (32-45mm): 40-60ml. MTB (2.0-2.5"): 60-90ml. Fat bike (3.0"+): 90-120ml. Always check the sealant manufacturer guidelines.

How often do I need to top up sealant?

Every 2-4 months in temperate climates. Hot, dry conditions cause sealant to dry out faster (every 1-2 months). Cold climates are more forgiving (4-6 months). Check by removing the valve core and using a stick to gauge the level.

What happens if I use too much sealant?

Excess sealant adds rotating weight and can cause balance issues (wobble at speed). It may also dry into a thick layer inside the tyre. Use the recommended amount.

What if I use too little sealant?

Too little sealant may not seal punctures effectively. The sealant needs to coat the entire inner surface of the tyre and have enough volume to fill holes when they occur.

Does sealant brand matter?

Different sealants have different properties. Latex-based (Stan NoTubes, Orange Seal) seals quickly but dries faster. Synthetic sealants last longer but may seal larger holes less effectively.

BikeCalcs

Tubeless Sealant Calculator — How Much Sealant?

Calculate the right amount of tubeless sealant for your tyre size and conditions.

Tyre Width

Wheel Size

Number of Tyres

Climate

How We Calculate This

Sealant Volume Calculation

Tyre volume estimated from tyre width and wheel circumference
Sealant = ~0.8% of tyre volume, with size-based minimums
Minimums: Road 30ml, Gravel 40ml, MTB 60-90ml, Fat 120ml
Top-up = ~60% of initial fill every 2-6 months
Climate affects drying rate: hot climates need more frequent top-ups

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Always verify results and consult a professional bike fitter where appropriate.