What is the average ERA in MLB right now?

The average MLB ERA for qualified pitchers in 2026 is approximately 4.10. Anything below 4.00 is better than league average, and anything below 3.00 is elite.

How do you calculate ERA for an MLB pitcher?

Divide earned runs by innings pitched and multiply by 9. Convert partial innings first — 6.1 IP is 6.333 in decimal, because the .1 means one out, not one-tenth.

What is a good ERA for an MLB starter?

Under 4.00 is better than league average, under 3.50 is good, under 3.00 is excellent, and under 2.50 puts a starter in the Cy Young conversation.

What is a good ERA for a reliever?

The bar is higher for relievers because they pitch shorter stints: under 3.00 is good, under 2.25 is excellent, and under 2.00 is elite closer territory.

How many innings does an MLB starter pitch per season?

A healthy modern starter typically throws 160–180 innings across about 30 starts, averaging 5.3–5.5 innings per outing. Reaching 200 innings is increasingly rare.

Why is my calculated ERA different from the official one?

Almost always the partial innings. A line of 6.2 IP is six and two-thirds innings (6.667), not 6.2. Convert the outs to thirds and the numbers will match.

Do unearned runs count toward an MLB pitcher's ERA?

No. Runs that score because of errors or passed balls are unearned and are excluded from ERA by the official scorer.

MLB ERA Calculator — Average MLB ERA & Major League Benchmarks

This MLB ERA calculator computes a pitcher's earned run average with the official 9-inning formula, then puts the result in major-league context — the current league average, what counts as a good ERA in the majors, and how many innings big-league starters actually throw. Enter any pitcher's line from a box score and see where he stands.

MLB ERA Calculator (9-Inning)

Enter earned runs and innings pitched to get a major-league ERA with context.

Earned Runs

Innings Pitched

What Is the Average ERA in MLB?

The average MLB ERA for qualified pitchers in 2026 is approximately 4.10. That is the single most useful reference point for judging any big-league arm: below 4.00 and a pitcher is better than the league; below 3.00 and he is one of the best starters in baseball; below 2.50 and he is front-of-the-pack in the Cy Young race.

Context matters, because the league average has never stood still. It sat near 3.75 in the early 2010s, dipped into the mid-3s during the pitching-friendly years, and has floated back above 4.00 as offense has rebounded. A 3.90 ERA today is a slightly better-than-average season; the same number in 1968 — the Year of the Pitcher — would have been below average. When you compare across seasons, reach for the ERA+ calculator, which adjusts for exactly this.

How to Calculate ERA in MLB

The math the league office uses is the same math you use: divide earned runs by innings pitched, multiply by 9. The only wrinkle is the partial-innings notation on official stat lines — 6.1 IP means six innings and one out, which is 6.333 in decimal, not 6.1. Plug a starter's season line into the calculator above and you will land on the same number MLB publishes, every time.

One rule to know: to appear on the official ERA leaderboard, a pitcher must be qualified — at least one inning pitched per team game played (162 innings over a full season). A reliever with a shiny 1.90 ERA over 55 innings will not show up on the starter leaderboard for that reason, even though the number itself is real.

Average Innings Pitched by Starters Per Season

A generation ago, a staff ace was expected to finish 230-plus innings. Today's game looks nothing like that. The modern MLB starter averages roughly 5.3 to 5.5 innings per start, and a healthy full-season workload lands around 160 to 180 innings. Pitchers who reach 200 innings in a season are now rare enough that the milestone gets mentioned on broadcasts.

That shift is exactly why ERA remains so useful. Because it scales performance per nine innings, it lets you compare a 190-inning ace against a 65-inning closer fairly — something raw runs allowed could never do. It also explains why a reliever's ERA can swing so violently in April: with barely 10 innings logged, one bad outing can add a full run to the number overnight.

What Is a Good ERA for a Starter vs. a Reliever?

The same benchmark table does not fit both roles. Starters face lineups multiple times and carry heavier workloads, so a 3.50 ERA from a rotation arm is genuinely valuable. Relievers pitch short bursts, often with inherited runners and platoon advantages, so the bar is higher — a setup man or closer is expected to live under 3.00, and the elite ones post ERAs in the low 2s or better.

Role	Good	Excellent	Elite
Starting pitcher	3.50 – 4.00	3.00 – 3.50	Under 2.50
Relief pitcher	3.00 – 3.50	2.25 – 3.00	Under 2.00

Pair any ERA with WHIP (the ERA + WHIP mode on the main ERA calculator gives you both) and you have a far sharper picture than ERA alone — a reliever stranding runners all season can hold a deceptively low ERA while his WHIP tells the real story.

Checking a Specific Pitcher's ERA

Most visits to this page start the same way: someone sees a box score, a fantasy line, or a broadcast graphic and wants to verify or compute a specific pitcher's ERA. That is exactly what the calculator is for. Take the pitcher's season earned runs and innings pitched — both printed in any standard stat line — enter them above, and the result matches the official figure, partial innings included. Save each outing in the history panel and the page doubles as a season-long ERA tracker for any arm you are following.

MLB ERA — Frequently Asked Questions

What is the average ERA in MLB right now? The average MLB ERA for qualified pitchers in 2026 is approximately 4.10. Anything below 4.00 is better than league average, and anything below 3.00 is elite.
How do you calculate ERA for an MLB pitcher? Divide earned runs by innings pitched and multiply by 9. Convert partial innings first — 6.1 IP is 6.333 in decimal, because the .1 means one out, not one-tenth.
What is a good ERA for an MLB starter? Under 4.00 is better than league average, under 3.50 is good, under 3.00 is excellent, and under 2.50 puts a starter in the Cy Young conversation.
What is a good ERA for a reliever? The bar is higher for relievers because they pitch shorter stints: under 3.00 is good, under 2.25 is excellent, and under 2.00 is elite closer territory.
How many innings does an MLB starter pitch per season? A healthy modern starter typically throws 160–180 innings across about 30 starts, averaging 5.3–5.5 innings per outing. Reaching 200 innings is increasingly rare.
Who qualifies for the MLB ERA title? A pitcher must average at least one inning pitched per team game played — 162 innings over a full season — to appear on the official ERA leaderboard.
Why is my calculated ERA different from the official one? Almost always the partial innings. A line of 6.2 IP is six and two-thirds innings (6.667), not 6.2. Convert the outs to thirds and the numbers will match.
Do unearned runs count toward an MLB pitcher's ERA? No. Runs that score because of errors or passed balls are unearned and are excluded from ERA by the official scorer.