Reviewed by Jean-Claude Giuca · 30+ years coaching in Australia · FAW/UEFA course cert · FFA B · AFC B · Masters in Sports Coaching (Griffith) · See credentials →

FIFA Law 2 specifies 410-450 grams (14-16 oz) for a regulation Size 5 soccer ball at the start of a match. That is the headline number. The detail underneath, weight by ball size, why match balls feel lighter than training balls at the same regulation weight, and how a wet ball can exceed regulation without breaching it, is what coaches actually need.

After 30 years coaching across Victoria and inspecting hundreds of balls before training and matches, here is the full weight reference, the Australian age-group breakdown, and what each gram means in practice. For the cluster overview, see the complete soccer balls guide.

What Does a Regulation Soccer Ball Weigh?

FIFA Law 2 of the Laws of the Game, maintained by the IFAB, codifies the regulation weight: between 410 and 450 grams (14 to 16 oz) at the start of the match. That range exists because different bladder types (latex vs butyl), different outer materials (PU vs synthetic leather), and different panel constructions (thermal-bonded vs machine-stitched) produce slightly different empty weights even before pressure differences are factored in.

For the full FIFA Law 2 reference and the corresponding circumference and pressure specs, see the Size 5 soccer ball dimensions guide. This article focuses on weight specifically.

Soccer Ball Weight Chart by Size (3, 4, 5 and Futsal)

The full weight reference across all official sizes used in Australian football:

Ball Size	Age Group (Australian)	Weight (grams)	Imperial (oz)	Use Context
Size 1 / 2	Skills only (3-5 yrs)	180-220 g	6-8 oz	Skills practice, novelty
Size 3	U6-U8 (MiniRoos)	300-340 g	11-12 oz	Junior MiniRoos training and matches
Size 4	U9-U13	350-390 g	12-14 oz	Youth competitive football
Size 5	U14+ and Senior	410-450 g	14-16 oz	Senior and pro match play (FIFA regulation)
Futsal Size 4	U10+ Futsal	400-440 g	14-15.5 oz	Indoor futsal (heavier for reduced bounce)

For the corresponding circumference and pressure specs at each size, see the soccer ball size chart. Football Australia’s MiniRoos framework follows the FIFA spec without modification.

Why Soccer Ball Weight Matters for Players

Weight is not arbitrary. The 410-450 g Size 5 spec scales to adult leg strength and biomechanics. Within that 40-gram range, ball behaviour shifts noticeably:

Lighter balls (closer to 410 g) fly further off a clean strike but are less stable in the air. Match balls trend toward the lighter end because reduced air resistance + thermal-bonded panels = more predictable flight at high speed.

Heavier balls (closer to 450 g) require more committed weight transfer on a strike but offer better cushioning on first touch and chest control. Training balls trend toward the heavier end because thicker outer casings + butyl bladders = more durability at the cost of a few extra grams.

Both are regulation. The difference shows up in how the ball flies and how it feels off the boot. I have seen U16 squads warm up with a 445 g training ball and play the match with a 415 g match ball, their first 10 minutes of passes are consistently underweighted because the lighter match ball travels further than they expect. The fix: introduce the match ball in the final session before competition. The match ball vs training ball comparison covers the full implications. Weight also only tells the full story at the right pressure, so keep a digital ball pressure gauge in the kit bag.

How Weight Differs Between Match Balls and Training Balls

Both must hit FIFA Law 2’s 410-450 g spec at start of match for any regulation Size 5. Where they differ:

• Match balls typically sit at 415-430 g: the lower-middle of the regulation range. Latex bladders, thermal-bonded panels, thinner PU outer.
• Training balls typically sit at 430-450 g: the upper end of the regulation range. Butyl bladders, machine-stitched panels, thicker PU outer for durability.

That 15-25 g gap is small but consistently noticeable on the boot. For most Australian coaching contexts, the weight difference doesn’t matter at U10-U13 (technique is still developing). It matters at U14+ when player skill is mature enough to leverage match-ball flight characteristics. For ranked picks at each tier, see the best soccer balls Australia roundup.

Why Soccer Balls Get Heavier in Wet Conditions

Modern PU and synthetic leather casings absorb minimal water by design, FIFA Quality Pro testing includes water absorption limits. But under prolonged rain, water gets through the seams and into the bladder lining. A regulation Size 5 ball can gain 50-100 grams during a rainy match, taking effective weight from 425 g to 475-525 g.

Crucially, this is not a regulation breach. FIFA Law 2 specifies the weight requirement “at the start of the match”: mid-match weight gain from environmental conditions is allowed. What changes is how the ball plays: heavier balls feel slower in the air, harder on the boot, and dramatically harder to head. Players warming up with a dry ball and playing the second half with a soaked one experience a real-time weight shift of 15-20%.

Practical fix at NPL/state league level: rotate match balls between halves in heavy rain. The replacement ball comes in at regulation weight; the soaked ball gets a chance to dry on the sideline. For grassroots, this isn’t usually possible, the match ball plays through the rain. Players adjust weight of pass on the fly.

Frequently Asked Questions

How much does a regulation Size 5 soccer ball weigh?

410-450 grams (14-16 oz) at the start of a match per FIFA Law 2. This applies to every regulation Size 5 ball used in international and senior competition. The 40-gram range allows for different bladder types (latex vs butyl) and different panel constructions.

Is a soccer ball 500 g or 5 kg?

A regulation Size 5 soccer ball weighs 410-450 grams (0.41-0.45 kg), not 500 g and definitely not 5 kg. A waterlogged ball during a rainy match can exceed 500 g, but at the start of any regulation match, the weight must sit between 410-450 g per FIFA Law 2.

How heavy is a FIFA Quality Pro ball?

The same 410-450 g as any regulation Size 5 ball, but FIFA Quality Pro applies tighter tolerances within that range. Quality Pro balls typically sit at 420-445 g with very low variance batch-to-batch, tighter than the basic FIFA Quality 410-450 g spread. The Quality Pro mark guarantees consistency across multiple match balls used in the same competition.

Are professional soccer balls lighter than training balls?

Slightly. Match balls typically sit at 415-430 g (lower-middle of FIFA range); training balls typically sit at 430-450 g (upper end). The difference is 15-25 g, small but noticeable on the boot. Match balls feel lighter and more responsive; training balls feel heavier and more durable. Both are regulation if they hit 410-450 g.

How heavy is a soccer ball in kg?

0.41-0.45 kg for a regulation Size 5 ball. That converts to 410-450 grams (the more common spec format) or approximately 14-16 oz in imperial. Most physics calculations cite 0.43 kg as the typical mid-range value.

Does a wet soccer ball weigh more?

Yes, significantly. A waterlogged ball can gain 50-100 g during heavy rain, taking effective weight from a regulation 425 g start to 475-525 g mid-match. This is permitted under FIFA Law 2 (the weight requirement applies “at start of match”). The ball plays heavier, slower in the air, and harder on headers. At NPL level, match balls are rotated in heavy rain to keep weight closer to regulation.

Related from ECC

• Soccer Balls Complete Guide: the cluster hub
• Size 5 Soccer Ball Dimensions: FIFA Law 2 spec sheet
• Match Ball vs Training Ball: weight differences in practice
• Soccer Ball Size Chart: full age-by-age breakdown
• Best Soccer Balls Australia 2026: coach-tested picks at every tier