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Free calculators for your website

Running clubs, coaches, race directors, leagues and team websites: give your members a pace chart or stat calculator right on your own site. Every calculator below can go on your site at no cost. Copy the code, paste it into any page (WordPress, Wix, Squarespace, Breakdance, plain HTML), and it works. Updates and fixes reach your copy automatically.

How it works

Pick a calculator and click Copy embed code.
In your website editor, add an HTML or Custom code block and paste.
Publish. That's it, with no account or fee.

Please keep the small credit line under the calculator. It's how other people find these tools. Want it branded with your logo and colors instead? Contact us.

Running Pace Calculator

Pace per mile and per kilometer, plus speed, from any distance and time. Try it

<iframe src="https://sportsums.com/embed/running/running-pace-calculator/" title="Running Pace Calculator" width="100%" height="420" style="border:1px solid #ddd;border-radius:10px;max-width:760px" loading="lazy"></iframe>
<p style="font-size:12px;margin:4px 0 0">Running Pace Calculator by <a href="https://sportsums.com/running/running-pace-calculator/" rel="nofollow">Sport Sums</a></p>

Race Time Predictor

Predict your 5K, 10K, half marathon or marathon time from a recent race, using the Riegel formula. Try it

<iframe src="https://sportsums.com/embed/running/race-time-predictor/" title="Race Time Predictor" width="100%" height="420" style="border:1px solid #ddd;border-radius:10px;max-width:760px" loading="lazy"></iframe>
<p style="font-size:12px;margin:4px 0 0">Race Time Predictor by <a href="https://sportsums.com/running/race-time-predictor/" rel="nofollow">Sport Sums</a></p>

Marathon Pace Chart

The pace per mile and per kilometer you need for every marathon finish time from 2:30:00 to 6:30:00, plus a calculator for any goal. Try it

<iframe src="https://sportsums.com/embed/running/marathon-pace-chart/" title="Marathon Pace Chart" width="100%" height="380" style="border:1px solid #ddd;border-radius:10px;max-width:760px" loading="lazy"></iframe>
<p style="font-size:12px;margin:4px 0 0">Marathon Pace Chart by <a href="https://sportsums.com/running/marathon-pace-chart/" rel="nofollow">Sport Sums</a></p>

Half marathon Pace Chart

The pace per mile and per kilometer you need for every half marathon finish time from 1:10:00 to 3:30:00, plus a calculator for any goal. Try it

<iframe src="https://sportsums.com/embed/running/half-marathon-pace-chart/" title="Half marathon Pace Chart" width="100%" height="380" style="border:1px solid #ddd;border-radius:10px;max-width:760px" loading="lazy"></iframe>
<p style="font-size:12px;margin:4px 0 0">Half marathon Pace Chart by <a href="https://sportsums.com/running/half-marathon-pace-chart/" rel="nofollow">Sport Sums</a></p>

10K Pace Chart

The pace per mile and per kilometer you need for every 10k finish time from 30:00 to 1:30:00, plus a calculator for any goal. Try it

<iframe src="https://sportsums.com/embed/running/10k-pace-chart/" title="10K Pace Chart" width="100%" height="380" style="border:1px solid #ddd;border-radius:10px;max-width:760px" loading="lazy"></iframe>
<p style="font-size:12px;margin:4px 0 0">10K Pace Chart by <a href="https://sportsums.com/running/10k-pace-chart/" rel="nofollow">Sport Sums</a></p>

5K Pace Chart

The pace per mile and per kilometer you need for every 5k finish time from 15:00 to 50:00, plus a calculator for any goal. Try it

<iframe src="https://sportsums.com/embed/running/5k-pace-chart/" title="5K Pace Chart" width="100%" height="380" style="border:1px solid #ddd;border-radius:10px;max-width:760px" loading="lazy"></iframe>
<p style="font-size:12px;margin:4px 0 0">5K Pace Chart by <a href="https://sportsums.com/running/5k-pace-chart/" rel="nofollow">Sport Sums</a></p>

ERA Calculator

Earned run average from earned runs and innings pitched, including partial innings. Try it

<iframe src="https://sportsums.com/embed/baseball/era-calculator/" title="ERA Calculator" width="100%" height="460" style="border:1px solid #ddd;border-radius:10px;max-width:760px" loading="lazy"></iframe>
<p style="font-size:12px;margin:4px 0 0">ERA Calculator by <a href="https://sportsums.com/baseball/era-calculator/" rel="nofollow">Sport Sums</a></p>

Batting Average Calculator

Batting average from hits and at-bats, the way scorekeepers figure it. Try it

<iframe src="https://sportsums.com/embed/baseball/batting-average-calculator/" title="Batting Average Calculator" width="100%" height="460" style="border:1px solid #ddd;border-radius:10px;max-width:760px" loading="lazy"></iframe>
<p style="font-size:12px;margin:4px 0 0">Batting Average Calculator by <a href="https://sportsums.com/baseball/batting-average-calculator/" rel="nofollow">Sport Sums</a></p>

On-Base Percentage Calculator

On-base percentage (OBP) from hits, walks, hit-by-pitches and sacrifice flies. Try it

<iframe src="https://sportsums.com/embed/baseball/on-base-percentage-calculator/" title="On-Base Percentage Calculator" width="100%" height="460" style="border:1px solid #ddd;border-radius:10px;max-width:760px" loading="lazy"></iframe>
<p style="font-size:12px;margin:4px 0 0">On-Base Percentage Calculator by <a href="https://sportsums.com/baseball/on-base-percentage-calculator/" rel="nofollow">Sport Sums</a></p>

Slugging Percentage Calculator

Slugging percentage (SLG) and total bases from singles, doubles, triples and home runs. Try it

<iframe src="https://sportsums.com/embed/baseball/slugging-percentage-calculator/" title="Slugging Percentage Calculator" width="100%" height="460" style="border:1px solid #ddd;border-radius:10px;max-width:760px" loading="lazy"></iframe>
<p style="font-size:12px;margin:4px 0 0">Slugging Percentage Calculator by <a href="https://sportsums.com/baseball/slugging-percentage-calculator/" rel="nofollow">Sport Sums</a></p>

OPS Calculator

OPS (on-base plus slugging) from a full batting line. Try it

<iframe src="https://sportsums.com/embed/baseball/ops-calculator/" title="OPS Calculator" width="100%" height="560" style="border:1px solid #ddd;border-radius:10px;max-width:760px" loading="lazy"></iframe>
<p style="font-size:12px;margin:4px 0 0">OPS Calculator by <a href="https://sportsums.com/baseball/ops-calculator/" rel="nofollow">Sport Sums</a></p>

WHIP Calculator

WHIP (walks plus hits per inning pitched) for any pitcher. Try it

<iframe src="https://sportsums.com/embed/baseball/whip-calculator/" title="WHIP Calculator" width="100%" height="460" style="border:1px solid #ddd;border-radius:10px;max-width:760px" loading="lazy"></iframe>
<p style="font-size:12px;margin:4px 0 0">WHIP Calculator by <a href="https://sportsums.com/baseball/whip-calculator/" rel="nofollow">Sport Sums</a></p>