Sinclair calculator.
Get your Sinclair total - the bodyweight-adjusted score that lets Olympic weightlifters of any size be compared on one scale. Enter bodyweight, sex and your snatch and clean and jerk, and this tool returns the Sinclair coefficient and Sinclair total using the current published constants. Works in kilograms or pounds, with the exact A and b values shown so you can check the maths.
score a total
Enter both lifts, or put your full total in one field and leave the other at 0 - the maths is the same.
404.94
Rough level: Advanced
| Rough level | Men (Sinclair total) | Women (Sinclair total) |
|---|---|---|
| Beginner | under 230 | under 150 |
| Intermediate | 230 - 329 | 150 - 219 |
| Advanced | 330 - 409 | 220 - 269 |
| National class | 410 - 469 | 270 - 319 |
| World class / elite | 470 and up | 320 and up |
These bands are informal orientation, not official standards. The elite band tracks roughly to the super-heavyweight total world records the coefficient is built from; the middle bands are loose. Men and women sit on separate scales because each uses its own constants, so read a score only against the same sex. The honest use of any strength score is tracking the change in your own number over time.
the short answer
A Sinclair calculator converts an Olympic weightlifting total - snatch plus clean and jerk - into a bodyweight-adjusted Sinclair score, so a 60 kg lifter and a 105 kg lifter can be ranked on one scale. It multiplies the actual total by a coefficient of 10^(A x (log10(bodyweight / b)) squared), where A and b are constants set for the current Olympic cycle. An 80 kg man who totals 320 kg scores a Sinclair total of 408.92.
How does the Sinclair coefficient work?
The calculator takes bodyweight and your two lifts, adds the snatch and clean and jerk into a total, converts everything to kilograms if you entered pounds, then multiplies the total by a bodyweight coefficient. In full the coefficient is 10^(A x (log10(bodyweight / b)) squared), where b is the bodyweight of the world-record holder in the heaviest category and A is a fitted constant. A lighter lifter is further below b, so the log term is larger and the coefficient is larger; a heavier lifter sits closer to b and gets a smaller one. A 60 kg woman who totals 220 kg scores 297.76, and an 89 kg man who totals 380 kg scores 459.33 - the size adjustment is what makes those two performances comparable at all.
The formula is capped: a lifter at or above the reference bodyweight of 193.609 kg for men, or 153.757 kg for women, gets a multiplier of exactly 1.0, so their Sinclair total equals their actual total. Because the score is defined in kilograms, the pound toggle converts your input at 1 lb = 0.45359237 kg before anything is computed, so a lifter who thinks in pounds and one who thinks in kilos land on the same number. Read the raw Sinclair total against the loose level table in the result panel above, then re-score at the end of a training block and compare - the change is the part that actually tells you the programming worked. For the powerlifting equivalent of this idea, run a squat, bench and deadlift total through the DOTS calculator.
Which Sinclair coefficients does this calculator use?
This tool uses the 2021 to 2024 Olympic-cycle Sinclair constants, the most recent set the International Weightlifting Federation has published in full. The federation recalculates A and b at the start of each cycle from the latest total world records, and normally the new set runs from the January after an Olympic year to the end of the next Olympic year. Because the weight categories were revised in mid-2025, the 2025 to 2028 constants are still being recalibrated on the new records, so the 2021 to 2024 set remains the honest, fully-published choice. If you compare against another calculator, check which cycle it is running first - the score shifts a little when the constants change.
Both sexes share the shape Sinclair total = total x 10^(A x (log10(x / b)) squared) for bodyweight x below b, and a flat multiplier of 1.0 at or above b. These are the published 2021 to 2024 constants.
Sinclair constants (2021 to 2024 cycle)
multiplier = 10^(A x (log10(x / b))²), where x is bodyweight in kilograms
| Men | Women | |
|---|---|---|
| A | 0.722762521 | 0.787004341 |
| b (kg) | 193.609 | 153.757 |
Worked check, men: at 80 kg, log10(80 / 193.609) = -0.38384, squared is 0.14733, times A (0.722762521) is 0.10648, so the coefficient is 10^0.10648 = 1.27786 and a 320 kg total scores 320 x 1.27786 = 408.92. Women, at 60 kg: log10(60 / 153.757) = -0.40868, squared is 0.16702, times A (0.787004341) is 0.13145, so the coefficient is 10^0.13145 = 1.35347 and a 220 kg total scores 220 x 1.35347 = 297.76.
One thing the standard Sinclair does not do is adjust for age. Masters lifters take the Sinclair total and multiply it again by an age factor - the Meltzer-Faber age coefficients used in masters weightlifting, giving the Sinclair-Meltzer-Faber score - so a 30-year-old and a 55-year-old can be compared. This calculator computes the standard Sinclair total only; apply the published age factor on top if you compete as a master. For how coaches fold benchmarks like this into day-to-day programming, see our guide to software for strength and conditioning coaches.
Sinclair vs IPF GL vs DOTS - which score for which sport?
These three do the same job - turn a lifted total into a bodyweight-adjusted score - but they belong to different sports and different maths. Sinclair is the Olympic weightlifting score, applied to a snatch plus clean and jerk total. DOTS and IPF GL points are powerlifting scores, applied to a squat, bench and deadlift total. Mixing them up is the most common mistake: you cannot read a Sinclair total against a DOTS score, because they normalise different lifts against different reference data.
| Score | Sport | Shape of the formula | Typical use |
|---|---|---|---|
| Sinclair | Olympic weightlifting | total x 10^(A x (log10(bw / b)) squared) | Ranking weightlifters across bodyweights |
| DOTS | Powerlifting | total x 500 / fourth-degree polynomial of bw | Modern default at many powerlifting federations |
| IPF GL | Powerlifting (IPF) | total x 100 / an exponential of bw | Official IPF ranking since 2020 |
| Wilks | Powerlifting | total x N / fifth-degree polynomial of bw | Older powerlifting standard |
So pick by sport, not by preference: score a weightlifter with Sinclair, and a powerlifter with the system their federation reports. If you coach powerlifters too, compare the newer IPF GL points calculator and the DOTS calculator against the older Wilks calculator, and estimate a lifters max from ordinary sets with the one-rep max calculator.
How do weightlifting coaches use the Sinclair total?
Raw totals mislead a coach with a mixed-bodyweight group. A 69 kg lifter and a 102 kg lifter both adding 10 kg to their total are not doing the same thing, and a squad board ranked by raw total just ranks bodyweight. The Sinclair total fixes both: put every athlete on the same scale and the board rewards relative progress, which is what keeps the lighter lifters bought in instead of parked at the bottom. It also follows a lifter through a weight change - during a category cut a falling total can hide the fact that relative strength is holding, and a stable Sinclair total is the evidence you show the athlete to keep them calm through the taper.
Where this stops scaling is the admin. Scoring one lifter is a minute; re-scoring a whole squad every time bodyweights and top singles move is an evening lost to a spreadsheet. Inside Coachway a coach sets lift targets and logs snatch and clean and jerk numbers per athlete in the workout builder, with bodyweight check-ins living in the same profile, so benchmarking the group is a glance at existing data instead of a rebuild. Coachway is EUR 69 per month for up to 5 clients, then EUR 9 per additional client, with every feature included and a 14-day trial that needs a card to start. The point is simple: handle everything around one athlete from one tab, not six.
Benchmark a mixed-bodyweight squad without rebuilding the spreadsheet each week.
No charge today - cancel anytime under Billing.Frequently asked questions.
What is a good Sinclair score?
Read the Sinclair total roughly as the total the lifter would post in the heaviest bodyweight class, so the reference points differ by sex. For men, a world-class score sits around 470 and up, tracking the mens super-heavyweight total world record of roughly 490 kg; 410 to 469 reads as national class and 330 to 409 as advanced. For women, world class is around 320 and up, near the heaviest-class world total of roughly 330 kg, with 270 to 319 national class and 220 to 269 advanced. Treat the middle bands as informal orientation, not official standards - the honest use of the number is watching your own Sinclair total climb over a season.
What is the difference between the Sinclair total and the Sinclair coefficient?
The Sinclair coefficient is the multiplier, a number usually between 1.0 and about 1.7 that depends only on bodyweight and sex. The Sinclair total is your actual total multiplied by that coefficient. So a lighter lifter gets a larger coefficient, and two lifters at different bodyweights who post the same Sinclair total are judged to have performed equally relative to their size. A lifter at or above the reference bodyweight gets a coefficient of exactly 1.0, so their Sinclair total equals their actual total.
Does the Sinclair formula work for masters lifters?
This tool computes the standard Sinclair total only. Masters weightlifters usually take that Sinclair total and multiply it again by an age factor - the Meltzer-Faber age coefficients used in masters weightlifting, giving what is often called the Sinclair-Meltzer-Faber score. That extra age adjustment is what lets a 55-year-old and a 30-year-old be compared. If you compete as a master and need the age-adjusted number, apply the published Meltzer-Faber factor for your age group on top of the Sinclair total shown here.
Can I compare a mans and a womans Sinclair total directly?
No. Men and women use different A and b constants, and each set is fitted to that fields own world records, so the two scores sit on separate scales. A mens Sinclair total of 400 and a womens Sinclair total of 400 do not represent the same standard. Compare men against men and women against women, which is exactly how the coefficient is designed to be used.
Which Olympic cycles coefficients does this calculator use?
It uses the 2021 to 2024 Olympic-cycle coefficients, the most recent set the IWF has published in full. The federation recalculates the A and b constants each cycle from the latest world records, and because the weight categories changed in mid-2025 the next set is still being recalibrated. The exact constants are printed on this page so you can confirm which cycle any other calculator is running before comparing numbers.
Can I calculate a Sinclair score in pounds?
Yes. The formula is defined in kilograms, so this calculator converts pounds internally at 1 lb = 0.45359237 kg before it runs. Enter bodyweight and your lifts in whichever unit you train in and the Sinclair total comes out the same - the score itself has no unit.
A Sinclair total is a comparison tool, not a measure of health or ability, and the constants are fitted on adult competitive lifters. This tool is general fitness information, not medical advice.
Keep building the plan: compare the powerlifting scores with the DOTS calculator, the IPF GL points calculator and the Wilks calculator, estimate a max from ordinary sets with the one-rep max calculator, or browse the full free tools library.
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