Use this tubeless sealant calculator to find the exact amount of sealant for your tyre size and brand. Enter your wheel diameter, tyre width, and preferred sealant — the calculator estimates the correct tubeless sealant volume based on manufacturer guidelines from Stan's NoTubes, Orange Seal, and Muc-Off.
Inputs
Sealant Recommendation
75ml per tyre
150 ml total for both tyres
Details
Tyre volume~2770 ml
Top-up amount38 ml per tyre
Top-up interval3–4 months
Check and top upAugust, November, February
This calculator is for reference only. Results are based on standard formulas and may not account for individual variation. Always use your own judgement when making equipment decisions.
Use this table for a quick lookup of the typical tubeless sealant amount and top-up dose by tyre size. For sealant for 29er trail tyres, gravel setups, and fat bikes, the volume grows with tyre cross-section.
Tyre Size
Type
Sealant per Tyre
Top-up Amount
700c × 25mm
Road
30–40 ml
15–20 ml
700c × 28mm
Road
35–45 ml
18–23 ml
700c × 32mm
Road
40–55 ml
20–28 ml
700c × 38mm
Gravel
55–70 ml
28–35 ml
700c × 40mm
Gravel
60–75 ml
30–38 ml
700c × 45mm
Gravel
70–85 ml
35–43 ml
700c × 50mm
Gravel
80–95 ml
40–48 ml
29" × 2.2"
MTB
80–110 ml
40–55 ml
29" × 2.4"
MTB
90–120 ml
45–60 ml
29" × 2.6"
MTB+
110–140 ml
55–70 ml
27.5" × 2.3"
MTB
75–100 ml
38–50 ml
27.5" × 2.5"
MTB
85–110 ml
43–55 ml
26" × 2.1"
MTB
70–90 ml
35–45 ml
26" × 4.0"
Fat
120–180 ml
60–90 ml
Values are starting recommendations based on Stan's NoTubes, Orange Seal, and Muc-Off guidelines. Use the calculator above for a precise recommendation based on your exact tyre size and preferred brand.
How it works
Latex Particles Seal Punctures Instantly
Tubeless sealant is a liquid containing latex particles suspended in a carrier fluid. When a sharp object punctures the tyre, the pressurised air forces the liquid toward the hole. The latex particles coagulate on contact with air, forming a plug within seconds.
What it seals
Up to 3–4mm: Seals instantly as you ride. You may not even notice.
4–6mm: Usually seals but may need a few revolutions to pool at the hole.
Over 6mm: Requires a tyre plug (mushroom plug or bacon strip) and re-inflation.
Sidewall tears: Sealant rarely seals sidewall cuts. These need a plug and boot.
After a puncture
If you hear a slow hiss, rotate the wheel so the puncture faces down and the sealant pools against it. In most cases this seals within 30 seconds. Top up air and continue riding. Check the tyre when you return home.
Carry a CO2 cartridge or pump even with tubeless. Sealant cannot replace lost pressure quickly.
Volume Determines How Much Sealant You Need
The right sealant quantity depends on tyre volume, not just width. A wider tyre on a larger wheel has significantly more internal volume than a narrow road tyre, and needs more sealant to coat the interior and maintain a liquid pool at the bottom.
Too little sealant
If there is not enough sealant, the tyre interior dries unevenly. Small punctures may not seal because there is not enough liquid to reach the hole under pressure. The dried residue also becomes harder to clean out when re-sealing.
Too much sealant
Excess sealant adds unnecessary rotating weight, which is a significant factor on road wheels. It also dries unevenly in thick clumps, creating wheel balance issues. More is not better beyond the recommended amount.
Road tyres (700c × 25–32mm): 40–55 ml per tyre
Gravel tyres (700c × 38–50mm): 55–80 ml per tyre
MTB tyres (29" × 2.2–2.5"): 90–120 ml per tyre
Tubeless sealant weight
Sealant weighs approximately 1 gram per ml (0.035 oz per ml). On a road bike, 40 ml (1.4 fl oz) per tyre adds 80 g (2.8 oz) of rotating weight total — noticeable for weight-conscious racers, negligible for recreational riders. Do not under-fill to save weight; too little sealant risks unsealed punctures.
Sealant Dries Over 3–6 Months
Tubeless sealant is not permanent. The carrier fluid evaporates through the tyre sidewall over time, leaving dried latex residue. How quickly this happens depends on temperature, tyre porosity, and riding frequency. Warm climates and porous casings dry out faster.
How often to replace tubeless sealant by climate
Sealant dries faster in hot, dry climates — check and top up every 2 months in summer. In cold weather below 5°C, sealant thickens and flows more slowly to punctures. Some brands (Stan's, Orange Seal) offer winter or cold-weather formulas designed for lower temperatures. If you ride year-round, consider shorter top-up intervals in summer and slightly more sealant in winter.
Sealant maintenance is part of a broader tyre care routine — check our gravel tyre pressure calculator if you also ride off-road.
How to check sealant level
Shake the wheel: If you hear liquid sloshing, sealant is still active.
Remove valve core: Use a syringe to check. If you draw up liquid, it is fine.
Pull the tyre: Inspect the interior. Dry flakes only means it is time to reseal.
Top up vs full reseal
If you can still draw liquid through the valve, add a top-up dose (about half the original amount). If the sealant has fully dried to flakes, remove the tyre, clean the interior, and do a full reseal with fresh sealant.
Signs your sealant has dried
No liquid sound when shaking the wheel.
A small puncture does not seal and keeps losing air slowly.
Visible dry latex chunks through the valve opening.
Set a calendar reminder when you install sealant. It is easy to forget until you get a puncture that will not seal.
Tubeless Sealant Brand Comparison
The calculator covers four common sealants. Brand differences affect longevity and sealing performance more than the basic tubeless sealant amount per tyre.
Stan's NoTubes: Natural latex base. Fast initial sealing. Dries in 3–4 months in typical conditions. Most widely available worldwide. Seals punctures up to ~6mm.
Orange Seal: Higher solid particle concentration. Lasts 4–6 months between top-ups. Claims to seal larger punctures than standard latex sealants. Slightly less volume needed per tyre.
Muc-Off: Latex-free formula — suitable for riders with latex allergies. Seals punctures up to 6mm. Lasts 3–5 months. Nano-particle based.
Generic / unbranded: Adequate for small punctures. May dry faster and seal less reliably on larger holes. Lower cost per ml.
Brand choice matters less than using the correct amount and maintaining a regular top-up schedule. The calculator above adjusts recommendations per brand.
All amounts shown in ml. To convert: 30 ml ≈ 1.0 fl oz, 60 ml ≈ 2.0 fl oz, 90 ml ≈ 3.0 fl oz, 120 ml ≈ 4.1 fl oz.
How much tubeless sealant should I put in my tyres?
The correct amount depends on tyre volume, not just tyre width. A 700c × 28mm road tyre needs 30–40ml per tyre. A 700c × 40mm gravel tyre needs 50–70ml. A 29" × 2.2" MTB tyre needs 90–120ml. Using too little sealant means punctures may not seal. Too much adds unnecessary weight and can pool asymmetrically inside the tyre. The calculator estimates volume from your tyre size and brand recommendations. If you are searching for how much sealant for tubeless tires of a specific size, use the Quick Reference table above or the calculator at the top of this page.
How often should I top up tubeless sealant?
Most sealants need topping up every 3–6 months. Latex-based sealants (Stan's NoTubes, Orange Seal) dry faster in hot, dry conditions and may need checking every 2–3 months in summer. Check by removing the valve core and inserting a thin wire. If liquid coats the wire, sealant is still active. Dried sealant appears as white crumble inside the tyre. Top up with half the original amount when refilling.
What is the difference between tubeless sealant brands?
Stan's NoTubes uses natural latex and seals most punctures quickly but dries relatively fast (3–4 months). Orange Seal is more concentrated and claims longer life (4–6 months) with slightly less volume needed. Muc-Off Tubeless Sealant is latex-free (better for latex allergies) and claims to seal larger holes. Generic sealants work adequately for smaller punctures but may not handle larger cuts. Brand choice matters less than using the correct amount and topping up regularly.
What size holes can tubeless sealant seal?
Tubeless sealant reliably seals punctures up to approximately 4–6mm diameter. Small thorns, glass fragments, and wire typically seal instantly as you continue riding. You may not even notice. Larger cuts (6–12mm) sometimes seal with multiple rotations of the wheel or by pressing the tyre against the ground. Cuts above 10–15mm usually require a tyre plug before sealant can seal them. Sidewall cuts are much harder to seal than tread punctures.
How do I set up tubeless tyres at home?
A complete tubeless tire setup needs a tubeless-ready rim and tyre, tubeless rim tape, a tubeless valve, sealant, and a high-volume pump or compressor. Tape the rim bed carefully, overlapping and airtight. Install the valve. Mount the tyre dry. Pour sealant through the valve hole (remove the valve core first). Reinstall the valve core. Inflate quickly to seat the bead. This often requires a floor pump with a large chamber or a CO2 cartridge for the initial seating. Rotate to distribute sealant. Once your tubeless tyres are sealed, set the correct pressure with our tyre pressure calculator.
Can I use any tyre and rim for tubeless?
No. Both the rim and tyre must be tubeless-ready (marked TR, TLR, or TCS). Standard clincher rims lack the bead hooks designed to hold tubeless pressure. Standard clincher tyres have porous casing that sealant cannot fill. Using non-tubeless-ready components is dangerous: the tyre can blow off the rim. Check both components for tubeless compatibility markings before attempting a tubeless setup.
How do I know if my tubeless sealant has dried out?
Remove the valve core and insert a thin zip tie, spoke, or wire into the valve hole. Rotate the wheel so the valve is at the bottom. Pull out the wire. If it is coated with milky or yellowish liquid, sealant is still active. If the wire comes out dry or with white flakes, the sealant has dried. You can also squeeze the tyre walls: dried sealant creates stiff patches or rattling when you shake the wheel. Top up immediately if sealant is low or dry.
What happens if I run tubeless without enough sealant?
With insufficient sealant, small punctures will not seal and you will lose air rapidly. The tyre may also be more prone to burping at low pressure because the bead area is not adequately coated. In cold weather, sealant moves to one side of the tyre and may not reach a puncture quickly enough. Always use the recommended amount and check sealant levels every 3 months. Carry a plug kit and CO2 for punctures that sealant cannot seal.