Mana Curve Calculator is a free Magic: The Gathering (MTG) deck analysis tool that helps you visualize and optimize your deck's mana curve. A good mana curve means you always have something to play each turn — this calculator shows you exactly how your spells are distributed across mana costs, calculates your average CMC, and gives you smart deck-building advice instantly. Works for Standard, Commander, and Draft formats. Mana Curve Analysis: The Mana Curve section lets you enter how many cards you have at each converted mana cost (CMC) from 0 to 7+. It instantly plots a bar chart showing your curve shape — whether you are too top-heavy, too aggressive, or perfectly balanced. You can also enter your land count and deck format to get a complete picture of your deck's consistency. Deck Stats & Analysis: The Deck Stats section shows your total spell count, average CMC, peak mana cost, and total card count — all in one place. The smart analysis engine then checks your land ratio, curve shape, and deck size against your chosen format (Standard, Commander, or Draft) and gives you specific tips to improve your deck-building decisions. How to Use: Enter the number of cards you have at each mana cost — 0 CMC, 1 CMC, 2 CMC, all the way to 7+ CMC Enter your total land count in the Lands field Select your deck format — Standard (60), Commander (100), or Draft (40) Click the Analyze Mana Curve button View the bar chart showing your full mana curve distribution Check your deck stats — Total Spells, Average CMC, Peak Cost, Total Cards Read the smart analysis tips to improve your deck's consistency and balance Tip: A healthy Standard deck usually has an average CMC between 2.2 and 2.8 with 23–24 lands. FAQ Q1: What exactly is a mana curve and why does it matter for my MTG deck? A mana curve is the distribution of your spells across different converted mana costs, from 0 CMC all the way up to 7 and beyond. It matters because Magic: The Gathering is fundamentally a game of tempo — you gain one extra mana each turn, and a well-built curve ensures you always have something meaningful to play on curve every single turn. A deck that is too top-heavy will leave you doing nothing in the early game, while a deck that is too low-cost may run out of impactful plays in the late game. Q2: Does this calculator work differently for Standard, Commander, and Draft formats? Yes, the calculator adjusts its analysis based on the format you select because each format has different deck size requirements and strategic expectations. Standard decks are 60 cards and typically favor an average CMC between 2.2 and 2.8 with around 23 to 24 lands. Commander decks are 100 cards with a singleton rule, so the curve and land count targets are completely different. Draft decks are only 40 cards and require a much tighter, more aggressive curve. Selecting the correct format ensures the smart analysis tips you receive are relevant to how you are actually building your deck. Q3: What is considered a healthy mana curve for a Standard deck? A healthy Standard deck generally peaks at 2 or 3 CMC, meaning you have the most cards in that cost range. Your average CMC should ideally fall between 2.2 and 2.8, and your land count should sit around 23 to 24 out of 60 cards. Having a small number of high-cost finishers at 5 or 6 CMC is fine, but if too many cards sit at 4 CMC and above, you risk being too slow against aggressive opponents in the early turns. Q4: How should I count lands — do they count toward my mana curve entries? No, lands should be entered separately in the dedicated Lands field and not included in your CMC entries. The mana curve chart and average CMC calculation are based only on your spell cards — creatures, instants, sorceries, enchantments, artifacts, and planeswalkers. Entering lands into the CMC fields would skew your average CMC and give you inaccurate analysis results. Keeping them separate allows the calculator to also evaluate your land-to-spell ratio against your chosen format's standards.