COINVAC
Crypto guides, coin analysis, and the calculators behind smarter digital-finance decisions.
From valuing your portfolio and projecting staking rewards to estimating crypto tax, measuring a trade's profit and loss, modeling dollar-cost averaging, and costing out Bitcoin mining, CoinVac pairs free hands-on crypto calculators with practical guides and a richly illustrated museum. Invest smarter, manage with confidence.
Crypto Tools & Calculators
Free calculators for digital finance — crypto portfolio calculator, staking rewards calculator, crypto tax calculator, profit/loss calculator, DCA calculator, and Bitcoin mining calculator.
Crypto Portfolio Calculator
Value your whole portfolio at once — per-coin value, gain, and return from each holding's amount, buy price, and current price, plus your total profit, ROI, and allocation across assets
Staking Rewards Calculator
Estimate the passive yield on staked coins from your amount, APR, and duration, with simple or daily, weekly, or monthly compounding — the coins earned and their value in fiat
Crypto Tax Calculator
Estimate the tax on your disposals — split short- and long-term gains by holding period, apply your rates, offset losses, and see the net gain and the tax you might owe
Crypto Profit / Loss Calculator
Work out the realized profit or loss on a trade from your buy price, sell price, and quantity — including trading fees — plus your ROI and the break-even sell price that leaves you flat
Crypto DCA Calculator
Model dollar-cost averaging by investing a fixed amount across a series of prices — total coins, your blended average cost, and the current value, profit, and ROI at today's price
Bitcoin Mining Calculator
Estimate mining profitability from your hashrate, network difficulty, block reward, power draw, and electricity rate — the daily BTC mined, revenue, power cost, and net profit
Coin Collection Value Tracker
List every coin in your collection with its quantity and your estimated per-coin value to see a running total, each coin's extended value, and its share of the whole collection
Coin Grading Scale Guide
Look up any Sheldon-scale grade from 1 to 70 and see its plain-language condition tier — Poor through Mint State — plus the full reference table used by PCGS and NGC
Coin Melt Value Calculator
Estimate a coin's raw metal value: weight × purity converts to pure troy ounces, priced at gold, silver, platinum, or palladium spot — with an editable, dated reference spot price you can override
Coin Storage & Holder Sizer
Enter a coin's diameter and how many you have to get a recommended 2x2 flip/holder size and the closest standard coin tube, plus how many tubes you'll need
Mintage-Rarity Estimator
Combine a coin's original mintage with an estimated survival rate to get a rough surviving-population figure and a plain-language rarity band, from Common to Extremely Rare
Silver-vs-Face-Value Calculator
Check whether a coin's silver content is worth more than its stamped face value — the classic "junk silver" question — with presets for common pre-1965 U.S. denominations
Coins & Currency Museum
Wander an immersive museum of coins and currency — the struck metal of coinage and the mint, the digital assets of Bitcoin and the blockchain, the gold, silver, and bullion behind the money, and the great coins of the ancient and historic world, each in its own gallery, so you can get to know the stories behind the money: how each coin and currency came to be, what makes it matter, and the role it plays in how we store and move value.
Tour the museum →From the Journal
Fresh guides on crypto and coins — Bitcoin and altcoins, staking and mining, coin collecting and precious metals, plus practical tips for tracking, trading, and investing with confidence.
What Is My Silver Quarter Actually Worth? Working Through Melt Value
A pre-1965 Washington quarter isn't worth 25 cents in silver terms. Here's the actual math behind melt value, worked through step by step with a real quarter.
22k, 18k, or 14k? Why Gold Purity Changes Everything About Melt Value
Two gold coins can weigh exactly the same and be worth wildly different amounts in melt value. Purity — not weight — is usually the number doing the real work.
Reading the Sheldon Scale: What Actually Separates MS-63 From MS-65
Two Mint State grades that sound almost identical can carry very different prices. Here's what a grader is actually looking at between MS-63 and MS-65 — and why it matters.
From Poor to Mint State: The 10 Coin-Grading Tiers, Explained
Poor, Good, Very Fine, About Uncirculated — coin-grading vocabulary sounds like a foreign language until you see what each tier is actually describing. Here's the full walk-through.
How Rare Is Your Coin, Really? Mintage vs. Survival Rate
A coin's original mintage figure is only half the rarity story. What survived the decades since is the number that actually matters -- and it's almost always much smaller.
Why a Coin With a Huge Mintage Can Still Be Rare Today
Millions struck doesn't mean millions survive. A look at the specific forces -- melting, hoarding, simple loss -- that can make a once-common coin genuinely hard to find decades later.
Keep Learning
Practical know-how on crypto basics, coin collecting, precious metals, and digital finance, plain-language explainers on Bitcoin, the blockchain, staking, and dollar-cost averaging, and tips for first-time buyers and seasoned collectors alike — everything you need to dig deeper and invest with confidence.
Visit the Learn hub →