What formula does this calculator use?

It uses the published IAAF/World Athletics scoring-table formulas: points = a x (b - time)^c for running events (100m, 400m, 110m hurdles, 1500m), and points = a x (mark - b)^c for jumps and throws (long jump, shot put, high jump, discus, pole vault, javelin). Each event has its own fixed a, b, and c coefficients.

Is this the exact official scoring system used at IAAF/World Athletics meets?

It applies the same widely published a/b/c coefficients that the official scoring tables are built on, not a licensed copy of the official scoring software. World Athletics has revised scoring tables in the past, so totals here are a close estimate, not a certified competition score.

What units should I enter?

Running events (100m, 400m, 110m hurdles) go in seconds, like 11.25. The 1500m accepts minutes:seconds, like 4:30.00, or plain seconds. Jumps and throws (long jump, high jump, pole vault, shot put, discus, javelin) go in meters, like 7.20 or 14.50.

Do I have to fill in all 10 events?

No. Any event left blank is skipped and shown as not scored; the day and combined totals only add up the events you have entered, and a note shows how many of the 10 are counted.

Why did an event show 0 points?

Each formula has a threshold mark (the "b" coefficient) below which the formula would produce a negative or undefined value. A result at or worse than that threshold scores 0 for that event rather than a negative number.

Yes. Each event score is rounded down to the nearest whole point, matching how official scoring tables display points, before the events are summed into day and combined totals.

Decathlon Score Calculator

Enter times and marks for all 10 decathlon events to get per-event points and a combined score using the published IAAF scoring formula.

Day 1

100m, long jump, shot put, high jump, 400m.

Day 2

110m hurdles, discus, pole vault, javelin, 1500m.

Combined Decathlon Score

0 of 10 events entered

Day 1 0

Day 2 0

Uses the published IAAF/World Athletics scoring formula (fixed a/b/c coefficients per event). Treat totals as a close estimate, not a certified competition score.

Summary

Decathlon scoring converts each of the 10 event results into points using a published set of formulas: a(b-t)^c for running events and a(m-b)^c for jumps and throws, with coefficients a, b, and c fixed per event by World Athletics. This calculator applies those standard coefficients to your entered times and marks for the 100m, long jump, shot put, high jump, and 400m on day one, and the 110m hurdles, discus, pole vault, javelin, and 1500m on day two, then sums all 10 into a combined total. It uses the widely published scoring-table coefficients rather than a proprietary or officially licensed scoring engine, so treat the total as a close, transparent estimate rather than a certified competition result.

How it works

Enter your time or distance for each of the 10 events; leave any event blank if you have not competed in it yet.
Times go in seconds (or minutes:seconds for the 1500m); jumps and throws go in meters.
Each event score uses the published IAAF formula: points = a x (b - time)^c for running, or a x (mark - b)^c for jumps and throws.
Day 1 and Day 2 subtotals update live, along with the combined 10-event total.
Use "Load Sample" to see an elite-level score set, or "Reset" to clear every field.

Use cases

Score a decathlon meet event-by-event as results come in.
Check how a single event change (like a faster 400m) shifts the combined total.
Estimate a target score needed across the remaining events on day two.
Compare two athletes' combined totals from published results.
Teach how the a(b-t)^c and a(m-b)^c scoring formulas convert marks into comparable points.
Plan event-by-event targets before a multi-event competition.

Frequently Asked Questions

Last updated: 2026-09-09 · Reviewed by Nham Vu