MTG Mana Curve Calculator

Paste a decklist or enter curve buckets to analyze mana value, early-game density, and land-count recommendations for 60-card or Commander decks.

Last updated: 2026-03-27

MTG mana curve calculator

Enter your values

Paste a decklist or enter curve buckets manually to check land count and mana base fit.

Recommended Lands

Enter your curve buckets or paste a decklist, then click Analyze to see whether the mana base fits the spell mix.

Calculation History(0)

No calculations yet. Complete a calculation to see it here.

Example calculations

Tap an example to prefill the calculator with sample values.

Low-curve aggro

60-card deck with a heavy 1- and 2-drop package

A streamlined list where shaving even one land can matter if the curve is truly compact.

Result: A low land recommendation and an aggressive early-game profile

Modern midrange

60-card shell with a normal two- and three-drop center

Good for checking whether a deck is really midrange or quietly drifting too top-heavy.

Result: A typical midrange land recommendation around the low-to-mid 20s

Commander ramp shell

100-card deck with a thicker top end and more mana acceleration

A Commander list can support bigger spells, but only if ramp and draw actually carry the load.

Result: A high but manageable land recommendation with ramp smoothing the curve

Paste decklist demo

Example of a pasted Modern Burn list

Paste a full list to auto-detect lands, CMC buckets, and ramp/draw. Unknown cards are flagged.

Result: Parser auto-fills curve buckets from the list; manual fields serve as fallback

What the curve check is optimizing

The calculator uses the shape of the spell curve, current land count, and the amount of ramp and card draw to estimate how pressurized the mana base is. You can paste a full decklist from Moxfield or Archidekt and the parser will auto-detect lands, sort spells into CMC buckets, and identify ramp and draw sources.

It is deliberately heuristic, not a full deck simulator. The goal is to flag whether the list looks lean, balanced, or greedier than the mana base can comfortably support. Cards not in the built-in database are flagged so you can adjust manually.

MTG mana curve FAQs

How the recommendation treats land count, top end, ramp, and incomplete brews.

What decklist formats are supported?

The parser accepts standard format ("4 Lightning Bolt"), Moxfield/Archidekt exports with set codes ("4 Lightning Bolt (2XM) 141"), and the "4x" quantity style. Sideboard lines are ignored. Cards not in the built-in database are flagged as unknown.

Do I need a full decklist for this calculator?

No. You can paste a decklist for automatic analysis, or use the curve bucket fields directly for early-stage brewing. The decklist parser overrides the manual fields when present.

Why are some cards marked as unknown?

The calculator includes a built-in database of ~300 commonly played cards. Cards not in the database are excluded from the curve analysis — adjust the manual fields to account for them, or ignore the warning if only a few are missing.

Why are all 5+ mana spells grouped together?

The calculator is built for fast curve checks, not exact deck parsing. Grouping the top end keeps the input compact while still revealing whether the list is becoming top-heavy.

Will ramp let me play fewer lands?

Sometimes. The recommendation nudges downward when ramp and draw density are high, but it will not pretend a greedy curve is safe just because a few acceleration pieces are present.

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