William Bonac is a Men’s Open Bodybuilding competitor from the Netherlands with a competitive record spanning 2008–2026.
Across 62 recorded contest results, William Bonac has 15 first-place finishes (a 24.2% win rate), including 2× Arnold Classic titles.
Win rate here is first-place finishes as a share of all 62 recorded contest results. It is published only where a career holds at least five, because below that a single placing moves the figure by twenty points or more.
William Bonac, a bodybuilder from the Netherlands, stands 5’7″ (170 cm) tall and competes at a contest weight of around 230 lb (104 kg). He was born on May 18, 1982 and is 44 years old.
Career Record
- Total Results
- 62
- Wins
- 15
- Win Rate
- 24.2%
- Career
- 2008–2026
- Height
- 5’7″ (170 cm)
- Weight
- 230 lb (104 kg)
- Age
- 44
- Arnold Classic Titles
- 2
- Verified
- Sources
- 62
Every season on record
Peak Year
2014 (2 wins)
Measured against William Bonac’s own seasons, not against the field. See the full peak window →
2008
2009
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2024
2025
2026
Olympia
1st place
2nd place
3rd place
Other
- Pro Debut
- 2008
- First Win
- 2009
- Olympia Debut
- 2014
- Last Contest
- 2026
William Bonac Olympia Career: 0 title(s). First appeared at the Olympia in 2014 and placed 15. Source: Fitness Volt Bodybuilding Database.
| Year | Placement | Division |
|---|---|---|
| 2014 | 15 | Men’s Open Bodybuilding |
| 2015 | 8 | Men’s Open Bodybuilding |
| 2016 | 5 | Men’s Open Bodybuilding |
| 2017 | 3 | Men’s Open Bodybuilding |
| 2018 | 4 | Men’s Open Bodybuilding |
| 2019 | 2 | Men’s Open Bodybuilding |
| 2020 | 5 | Men’s Open Bodybuilding |
| 2021 | 6 | Men’s Open Bodybuilding |
| 2022 | 9 | Men’s Open Bodybuilding |
| 2024 | 7 | Men’s Open Bodybuilding |
| 2025 | 9 | Men’s Open Bodybuilding |
Data updated
Championship record
Where the titles came from
Counted from the same results table below: an appearance is one recorded placing at that series, a title is a first place, and Top 3 counts first, second and third together. The last row is every contest on record for William Bonac, amateur shows included.
Mr. Olympia
12Appearances
0Titles
3Top 3
Arnold Classic
13Appearances
3Titles
9Top 3
All contests on record
62Contests
15Wins
34Top 3
Physique benchmark
How William Bonac measures up
Fat-free mass index turns the height and weight on this profile into one number for how much muscle a frame carries, so a shorter competitor is not flattered by a bodyweight comparison. The normalised figure adjusts it again to a standard height, which is the version worth ranking. Both assume the 6% body fat a competitor steps on stage at, because that is the only condition the recorded weight was taken in.
33.8FFMI
34.4Normalised FFMI
55thOf 316 measured men
The closest Olympia champion on that measure is Shawn Rhoden, at 34.4, the same figure.
What this rank is not. This database holds a height and a weight for just 463 athletes, and they are overwhelmingly the ones somebody bothered to measure: 73 of them hold an Olympia title. Almost every competitor on record carries no measurement at all. The pool also mixes every division and era together, from the lightweight women’s classes to the open heavyweights, so it ranks size and nothing else. It says where William Bonac sits among the athletes we hold measurements for, not among competitors.
All results
Every contest result on record for William Bonac, 62 in all. The table opens on the first 15 and expands in place from there. Nothing sits on a separate page. Won by names the winner of the division William Bonac competed in, and shows a dash where that winner cannot be pinned to one person in the database.
Showing 15 of 62 recorded results.
Where these results come from. Each contest in the table was recorded from a named source, and for William Bonac those sources are NPC Contests, MuscleMemory and IFBB Pro League. Open any contest above and that page names its own source and links to it where the source is still reachable. MuscleMemory is the exception: the archive we recorded those older shows from no longer answers at the addresses we hold, so it is credited by name and not offered as a link.
More Men’s Open Bodybuilding athletes
Athletes from Netherlands
William Bonac peak window
William Bonac division journey
In 20 meetings, William Bonac finished ahead of Brandon Curry 12 times to 8.
Opponents are ranked by how often they shared a stage and how big the stage was, not by reputation. A meeting is one contest where both competed in the same division and both were placed.
